Internet-Draft draft-ietf-detnet-yang-13 October 2021
Geng, et al. Expires 7 April 2022 [Page]
Workgroup:
Network Working Group
Internet-Draft:
draft-ietf-detnet-yang-13
Published:
Intended Status:
Standards Track
Expires:
Authors:
X. Geng
Huawei Technologies
Y. Ryoo
ETRI
D. Fedyk
LabN Consulting, L.L.C.
R. Rahman
Individual
Z. Li
China Mobile

Deterministic Networking (DetNet) YANG Model

Abstract

This document contains the specification for the Deterministic Networking YANG Model for configuration and operational data for DetNet Flows. The model allows for provisioning of end-to-end DetNet service on devices along the path without dependency on any signaling protocol. It also specifies operational status for flows. An operator or network controller programs the configuration of the devices.

The YANG module defined in this document conforms to the Network Management Datastore Architecture (NMDA).

Requirements Language

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.

Status of This Memo

This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.

Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at https://datatracker.ietf.org/drafts/current/.

Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress."

This Internet-Draft will expire on 7 April 2022.

▲

Table of Contents

1. Introduction

DetNet (Deterministic Networking) provides a capability to carry specified unicast or multicast data flows for real-time applications with extremely low packet loss rates and assured maximum end-to-end delivery latency. A description of the general background and concepts of DetNet can be found in [RFC8655].

This document defines a YANG model for DetNet based on YANG data types and modeling language defined in [RFC6991] and [RFC7950]. DetNet service, which is designed for describing the characteristics of services being provided for application flows over a network, and DetNet configuration, which is designed for DetNet flow path establishment, flow status reporting, and DetNet functions configuration in order to achieve end-to-end bounded latency and zero congestion loss, are both included in this document.

2. Abbreviations

The following abbreviations are used in this document:

PEF
Packet Elimination Function
PRF
Packet Replication Function
PEOF
Packet Elimination and Ordering Functions
PERF
Packet Elimination and Replication Functions
PREOF
Packet Replication, Elimination and Ordering Functions
MPLS
Multiprotocol Label Switching

3. Terminology

This document uses the terminology defined in [RFC8655].

4. DetNet YANG Module

The DetNet YANG module includes DetNet App-flow, DetNet Service Sub-layer, and DetNet Forwarding Sub-layer configuration and operational objects. The corresponding attributes used in different sub-layers are defined in Section 3.1, 3.2, 3.3 respectively.

Layers of the objects typically occur in the different data instances forming the node types defined in [RFC8655]. Figure 1 illustrates the relationship between data instance node types and the included layers. Node types typically are logical per DetNet service and one DetNet service can be one node type while another is another node type on same device. This model is a controller based model because a controller or operator configures all the devices to form a service.

      +---------------------------------------------------+
      |                    Instance                       |
+-----+-----------------+-----------------+---------------+
|     |Edge Node        | Transit Node    |  Relay Node   |
+-----+-----------------+-----------------+---------------+
|  L  |Application      |                 |               |
|  a  +-----------------+-----------------+---------------+
|  y  |Service Sub-Layer|Service Sub-Layer|               |
|  e  +-----------------+-----------------+---------------+
|  r  |Forwarding S-L   |Forwarding S-L   | Forwarding S-L|
+-----+-----------------+-----------------+---------------+
Figure 1: Detnet Layers and Node Types

All of the layers have ingress/incoming and egress/outgoing operations but any instance may be configured as only unidirectional. This means that each unidirectional flow identifier configuration is programmed starting at the ingress and flow status is reported at ingress on each end. In the MPLS cases once encapsulated, the IP six tuple parameters may not be required to be programmed again. In the IP case, without encapsulation, various IP flow id parameters must be configured along the flow path.

In the YANG model the terms source and destination are used as flow identifiers whereas ingress and egress refer to a DetNet application direction from the application edge. Ingress is to the DetNet application and egress is from the application. The terms incoming and outgoing generally represent the flow direction towards the remote application. Outgoing is viewed as going up the stack from Application to Service sub-layer to Forwarding sub-layer and incoming is the reverse. Although, in examples where there is aggregation and disaggregation outgoing relates to the aggregating output and incoming relates to the disaggregating flows.

At the egress the YANG model is handing off IP or MPLS to a next hop and a routing next hop structure is used.

4.1. DetNet Application Flow YANG Attributes

DetNet application flow is responsible for mapping between application flows and DetNet flows at the edge node(egress/ingress node). The application flows can be either layer 2 or layer 3 flows. To map a flow at the User Network Interface (UNI), the corresponding attributes are defined in [RFC9016].

4.2. DetNet Service Sub-layer YANG Attributes

DetNet service functions, e.g., DetNet tunnel initialization/termination and service protection, are provided in the DetNet service sub-layer. To support these functions, the following service attributes need to be configured:

4.3. DetNet Forwarding Sub-layer YANG Attributes

As defined in [RFC8655], DetNet forwarding sub-layer optionally provides congestion protection for DetNet flows over paths provided by the underlying network. Explicit route is another mechanism that is used by DetNet to avoid temporary interruptions caused by the convergence of routing or bridging protocols, and it is also implemented at the DetNet forwarding sub-layer.

To support congestion protection and explicit route, the following transport layer related attributes are necessary:

5. DetNet Flow Aggregation

DetNet provides the capability of flow aggregation to improve scalability of DetNet data, management and control planes. Aggregated flows can be viewed by the some DetNet nodes as individual DetNet flows. When aggregating DetNet flows, the flows should be compatible: if bandwidth reservations are used, the reservation should be a reasonable representation of the individual reservations; if maximum delay bounds are used, the system should ensure that the aggregate does not exceed the delay bounds of the individual flows.

The DetNet YANG model defined in this document supports DetNet flow aggregation with the following functions:

The following cases of DetNet aggregation are supported:

Traffic requirements and traffic specification may be tracked for individual or aggregate flows but reserving resources and tracking the services in the aggregated flow is out of scope.

6. DetNet YANG Structure Considerations

The picture shows that the general structure of the DetNet YANG Model:

                   +-----------+
                   |ietf-detnet|
                   +-----+-----+
                         |
          +--------------+----------------+-------------------+
          |              |                |                   |
    +-----+------+ +-----+------+ +-------+------+            |
    | App Flows  | |service s-l | |forwarding s-l|            |
    +-----+------+ +-----+------+ +-------+------+            |
          |              |                |                   |
    +-----+------+ +-----+------+ +-------+------+            |
    | Reference  | | Reference  | | Reference    |            |
    | to Traffic | | to Traffic | | to Traffic   |   +--------+-------+
    | Profile    | | Profile    | | Profile      |   | Traffic Profile|
    +------------+ +------------+ +--------------+   +----------------+

There are three layer types in DetNet YANG Model: App-flow data layer, service sub-layer and forwarding sub-layer. Additionally, the Traffic parameters are captured in a Traffic profile that can be referenced by any of the layers.

Below is a a summary YANG tree showing the major items. A complete YANG tree is in section Appendix A.

A traffic profile can be created for application, service sub-layer or forwarding sub-layer. A single profile may be shared by multiple applications/sub-layer. Each profile indicates the members that currently are using a profile.

Depending on which DetNet layers and functions are required, some or all of the components may configured. Examples are shown in Appendix B.

7. DetNet Configuration YANG Structures

The following is a partial tree representation of the YANG as defined in [RFC8340]. This corresponds to the structure layout in the previous section.

module: ietf-detnet
  +--rw detnet
     +--rw traffic-profile* [name]
     |  +--rw name                    string
     |  +--rw traffic-requirements
     |  +--rw traffic-spec
     |  +--ro member-apps*            app-flow-ref
     |  +--ro member-services*        service-sub-layer-ref
     |  +--ro member-fwd-sublayers*   forwarding-sub-layer-ref
     +--rw app-flows
     |  +--rw app-flow* [name]
     |     +--rw name                string
     |     +--rw bidir-congruent?    boolean
     |     +--ro outgoing-service?   service-sub-layer-ref
     |     +--ro incoming-service?   service-sub-layer-ref
     |     +--rw traffic-profile?    traffic-profile-ref
     |     +--rw ingress
     |     |     ...
     |     +--rw egress
     |           ...
     +--rw service
     |  +--rw sub-layer* [name]
     |     +--rw name                  string
     |     +--rw service-rank?         uint8
     |     +--rw traffic-profile?      traffic-profile-ref
     |     +--rw service-protection
     |     |     ...
     |     +--rw operation?            operation
     |     +--rw incoming
     |     |     ...
     |     +--rw outgoing
     |           ...
     +--rw forwarding
        +--rw sub-layer* [name]
           +--rw name               string
           +--rw traffic-profile?   traffic-profile-ref
           +--rw operation?         forwarding-operations
           +--rw incoming
           |     ...
           +--rw outgoing
                 ...

8. DetNet Configuration YANG Model

The following model has references to RFCs [RFC4303], [RFC8349], [RFC8960], [RFC8964], and [IEEE8021Q].

<CODE BEGINS>
module ietf-detnet {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-detnet";
  prefix dnet;

  import ietf-yang-types {
    prefix yang;
    reference
      "RFC 6991 - Common YANG Data Types.";
  }
  import ietf-inet-types {
    prefix inet;
    reference
      "RFC 6991 - Common YANG Data Types.";
  }
  import ietf-ethertypes {
    prefix ethertypes;
    reference
      "RFC 8519 - YANG Data Model for Network Access Control
                  Lists (ACLs).";
  }
  import ietf-routing-types {
    prefix rt-types;
    reference
      "RFC 8294 - Common YANG Data Types for the Routing Area.";
  }
  import ietf-packet-fields {
    prefix packet-fields;
    reference
      "RFC 8519 - YANG Data Model for Network Access Control Lists
       (ACLs).";
  }
  import ietf-interfaces {
    prefix if;
    reference
      "RFC 8343 - A YANG Data Model for Interface Management.";
  }
  import ieee802-dot1q-types {
    prefix dot1q-types;
    reference
      "IEEE 802.1Qcx-2020 - IEEE Standard for Local and Metropolitan
       Area Networks--Bridges and Bridged Networks Amendment 33: YANG
       Data Model for Connectivity Fault Management.";
  }

  organization
    "IETF DetNet Working Group";
  contact
    "WG Web:   <http://tools.ietf.org/wg/detnet/>
     WG List:  <mailto: detnet@ietf.org>

     Editor:   Xuesong Geng
                <mailto:gengxuesong@huawei.com>

     Editor:   Yeoncheol Ryoo
                <mailto:dbduscjf@etri.re.kr>

     Editor:   Don Fedyk
                <mailto:dfedyk@labn.net>;

     Editor:   Reshad Rahman
                <mailto:reshad@yahoo.com>

     Editor:   Mach Chen
                <mailto:mach.chen@huawei.com>

     Editor:   Zhenqiang Li
                <mailto:lizhenqiang@chinamobile.com>";
  description
    "This YANG module describes the parameters needed
     for DetNet flow configuration and flow status
     reporting.

     Copyright (c) 2021 IETF Trust and the persons identified as
     authors of the code.  All rights reserved.

     Redistribution and use in source and binary forms, with or
     without modification, is permitted pursuant to, and subject to
     the license terms contained in, the Simplified BSD License set
     forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents
     (https://trustee.ietf.org/license-info).

     This version of this YANG module is part of RFC XXXX
     (https://www.rfc-editor.org/info/rfcXXXX); see the RFC itself
     for full legal notices.

     The key words 'MUST', 'MUST NOT', 'REQUIRED', 'SHALL', 'SHALL
     NOT', 'SHOULD', 'SHOULD NOT', 'RECOMMENDED', 'NOT RECOMMENDED',
     'MAY', and 'OPTIONAL' in this document are to be interpreted as
     described in BCP 14 (RFC 2119) (RFC 8174) when, and only when,
     they appear in all capitals, as shown here. ";


  revision 2021-10-04 {
    description
      "initial revision";
    reference
      "RFC XXXX: Deterministic Networking (DetNet) YANG Model";
  }

  identity app-status {
    description
      "Base identity from which all application-status
       status types are derived.";
    reference
      "RFC 9016 Section 5.8";
  }

  identity none {
    base app-status;
    description
      "This Application has no status. This type of status is
       expected when the configuration is incomplete.";
    reference
      "RFC 9016 Section 5.8";
  }

  identity ready {
    base app-status;
    description
      "Application ingress/egress ready.";
    reference
      "RFC 9016 Section 5.8";
  }

  identity failed {
    base app-status;
    description
      "Application ingres/egresss failed.";
    reference
      "RFC 9016 Section 5.8";
  }

  identity out-of-service {
    base app-status;
    description
      "Application Administratively blocked.";
    reference
      "RFC 9016 Section 5.8";
  }

  identity partial-failed {
    base app-status;
    description
      "This is an Application with one or more Egress ready, and one
       or more Egress failed.  The DetNet flow can be used if the
       Ingress is Ready.";
    reference
      "RFC 9016 Section 5.8";
  }

  typedef app-flow-ref {
    type leafref {
      path "/dnet:detnet"
         + "/dnet:app-flows"
         + "/dnet:app-flow"
         + "/dnet:name";
    }
    description
      "This is an Application Reference.";
  }

  typedef service-sub-layer-ref {
    type leafref {
      path "/dnet:detnet"
         + "/dnet:service"
         + "/dnet:sub-layer"
         + "/dnet:name";
    }
    description
      "This is a Service sub-layer Reference.";
  }

  typedef forwarding-sub-layer-ref {
    type leafref {
      path "/dnet:detnet"
         + "/dnet:forwarding"
         + "/dnet:sub-layer"
         + "/dnet:name";
    }
    description
      "This is a Forwarding sub-layer Reference.";
  }

  typedef traffic-profile-ref {
    type leafref {
      path "/dnet:detnet"
         + "/dnet:traffic-profile"
         + "/dnet:name";
    }
    description
      "This is a Traffic Profile Reference.";
  }

  typedef ipsec-spi {
    type uint32 {
      range "1..max";
    }
    description
      "IPsec Security Parameters Index. A 32 bit value
       where 0 is reserved.";
    reference
      "IETF RFC 4303 Encapsulating Security Payload (ESP).";
  }

  typedef operation {
    type enumeration {
      enum initiation {
        description
          "This is an initiating service sub-layer encapsulation.";
      }
      enum termination {
        description
          "Operation for DetNet service sub-layer decapsulation.";
      }
      enum relay {
        description
          "Operation for DetNet service sub-layer swap.";
      }
      enum non-detnet {
        description
          "No operation for DetNet service sub-layer.";
      }
    }
    description
      "Operation type identifies the behavior for this service
       sub-layer. Operations are described as unidirectional
       but a service sub-layer may combine operation types.";
  }

  typedef forwarding-operations {
    type enumeration {
      enum impose-and-forward {
        description
          "This operation impose outgoing label(s) and forward to
           next-hop.";
        reference
          " A YANG Data Model for MPLS Base RFC 8960.";
      }
      enum pop-and-forward {
        description
          "This operation pops the incoming label and forwards to
           the next-hop.";
        reference
          " A YANG Data Model for MPLS Base RFC 8960.";
      }
      enum pop-impose-and-forward {
        description
          "This operation pops the incoming label, imposes one or
           more outgoing label(s) and forwards to the next-hop.";
        reference
          " A YANG Data Model for MPLS Base RFC 8960.";
      }
      enum swap-and-forward {
        description
          "This operation swaps incoming label, with an outgoing
           label and forwards to the next-hop.";
        reference
          " A YANG Data Model for MPLS Base RFC 8960.";
      }
      enum forward {
        description
          "This operation forward to next-hop.";
      }
      enum pop-and-lookup {
        description
          "This operation pops incoming label and performs a
           lookup.";
      }
    }
    description
      "MPLS operations types.  This is an enum modeled after the
       MPLS enum.  The enums are the same as A YANG Data Model
       for MPLS Base. RFC 8960.";
  }

  typedef service-protection {
    type enumeration {
      enum none {
        description
          "No service protection provided.";
      }
      enum replication {
        description
          "A Packet Replication Function (PRF) replicates DetNet
           flow packets and forwards them to one or more next hops in
           the DetNet domain.  The number of packet copies sent to
           each next hop is a DetNet flow specific parameter at the
           node doing the replication.  PRF can be implemented by an
           edge node, a relay node, or an end system.";
      }
      enum elimination {
        description
          "A Packet Elimination Function (PEF) eliminates duplicate
           copies of packets to prevent excess packets flooding the
           network or duplicate packets being sent out of the DetNet
           domain.  PEF can be implemented by an edge node, a relay
           node, or an end system.";
      }
      enum ordering {
        description
          "A Packet Ordering Function (POF) re-orders packets within
           a DetNet flow that are received out of order.  This
           function can be implemented by an edge node, a relay node,
           or an end system.";
      }
      enum elimination-ordering {
        description
          "A combination of PEF and POF that can be implemented by
           an edge node, a relay node, or an end system.";
      }
      enum elimination-replication {
        description
          "A combination of PEF and PRF that can be implemented by
           an edge node, a relay node, or an end system.";
      }
      enum elimination-ordering-replication {
        description
          "A combination of PEF, POF and PRF that can be implemented
           by an edge node, a relay node, or an end system.";
      }
    }
    description
      "This typedef describes the service protection types.";
  }

  typedef sequence-number-generation {
    type enumeration {
      enum copy-from-app-flow {
        description
          "This type means copy the app-flow sequence number to the
           DetNet-flow.";
      }
      enum generate-by-detnet-flow {
        description
          "This type means generate the sequence number by the
           DetNet flow.";
      }
    }
    description
      "An enumeration for the sequence number behaviors supported.";
  }

  typedef sequence-number-field {
    type enumeration {
      enum zero-sn {
        description
          "No DetNet sequence number field is used.";
      }
      enum short-sn {
        value 16;
        description
          "A 16-bit DetNet sequence number field is used.";
      }
      enum long-sn {
        value 28;
        description
          "A 28-bit DetNet sequence number field is used.";
      }
    }
    description
      "This type captures the sequence number behavior.";
  }

  grouping ip-header {
    description
      "This grouping captures the IPv4/IPv6 packet header
       information. it is modeled after existing fields.";
    leaf src-ip-address {
      type inet:ip-address-no-zone;
      description
        "The source IP address in the header.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    leaf dest-ip-address {
      type inet:ip-address-no-zone;
      description
        "The destination IP address in the header.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    leaf protocol-next-header {
      type uint8;
      description
        "Internet Protocol number.  Refers to the protocol of the
         payload.  In IPv6, this field is known as 'next-header',
         and if extension headers are present, the protocol is
         present in the 'upper-layer' header.";
      reference
        "RFC 791: Internet Protocol
         RFC 8200: Internet Protocol, Version 6 (IPv6)
         Specification.";
    }
    leaf dscp {
      type inet:dscp;
      description
        "The traffic class value in the header.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    leaf flow-label {
      type inet:ipv6-flow-label;
      description
        "The flow label value of the header.IPV6 only.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    leaf source-port {
      type inet:port-number;
      description
        "The source port number.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    leaf destination-port {
      type inet:port-number;
      description
        "The destination port number.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
  }

  grouping l2-header {
    description
      "The Ethernet or TSN packet header information.";
    leaf source-mac-address {
      type yang:mac-address;
      description
        "The source MAC address value of the Ethernet header.";
    }
    leaf destination-mac-address {
      type yang:mac-address;
      description
        "The destination MAC address value of the Ethernet header.";
    }
    leaf ethertype {
      type ethertypes:ethertype;
      description
        "The Ethernet packet type value of the Ethernet header.";
    }
    leaf vlan-id {
      type dot1q-types:vlanid;
      description
        "The VLAN value of the Ethernet header.";
      reference
        "IEEE 802.1Qcx-2020.";
    }
    leaf pcp {
      type dot1q-types:priority-type;
      description
        "The priority value of the Ethernet header.";
      reference
        "IEEE 802.1Qcx-2020.";
    }
  }

  grouping destination-ip-port-id {
    description
      "The TCP/UDP port(source/destination) identification
       information.";
    container destination-port {
      uses packet-fields:port-range-or-operator;
      description
         "This grouping captures the destination port fields.";
    }
  }

  grouping source-ip-port-id {
    description
      "The TCP/UDP port(source/destination) identification
       information.";
    container source-port {
      uses packet-fields:port-range-or-operator;
      description
         "This grouping captures the source port fields.";
    }
  }

  grouping ip-flow-id {
    description
      "The IPv4/IPv6 packet header identification information.";
    leaf src-ip-prefix {
      type inet:ip-prefix;
      description
        "The source IP prefix.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    leaf dest-ip-prefix {
      type inet:ip-prefix;
      description
        "The destination IP prefix.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    leaf protocol-next-header {
      type uint8;
      description
        "Internet Protocol number.  Refers to the protocol of the
         payload.  In IPv6, this field is known as 'next-header', and
         if extension headers are present, the protocol is present in
         the 'upper-layer' header.";
      reference
        "RFC 791: Internet Protocol
          RFC 8200: Internet Protocol, Version 6 (IPv6)
         Specification.";
    }
    leaf dscp {
      type inet:dscp;
      description
        "The traffic class value in the header.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    leaf flow-label {
      type inet:ipv6-flow-label;
      description
        "The flow label value of the header.";
      reference
        "RFC 6991 Common YANG Data Types";
    }
    uses source-ip-port-id;
    uses destination-ip-port-id;
    leaf ipsec-spi {
      type ipsec-spi;
      description
      "IPsec Security Parameters Index of the Security
       Association.";
      reference
        "IETF RFC 4303 Encapsulating Security Payload (ESP).";
    }
  }

  grouping mpls-flow-id {
    description
      "The MPLS packet header identification information.";
    choice label-space {
      description
        "Designates the label space being used.";
      case context-label-space {
        uses rt-types:mpls-label-stack;
      }
      case platform-label-space {
        leaf label {
          type rt-types:mpls-label;
          description
           "This is the case for Platform label space.";
        }
      }
    }
  }

  grouping data-flow-spec {
    description
      "app-flow identification.";
    choice data-flow-type {
      description
        "The Application flow type choices.";
      container tsn-app-flow {
        uses l2-header;
        description
          "The L2 header for application.";
      }
      container ip-app-flow {
        uses ip-flow-id;
        description
          "The IP header for application.";
      }
      container mpls-app-flow {
        uses mpls-flow-id;
        description
          "The MPLS header for application.";
      }
    }
  }

  grouping detnet-flow-spec {
    description
      "detnet-flow identification.";
    choice detnet-flow-type {
      description
        "The Detnet flow type choices.";
      case ip-detnet-flow {
        uses ip-flow-id;
      }
      case mpls-detnet-flow {
        uses mpls-flow-id;
      }
    }
  }

  grouping app-flows-group {
    description
      "Incoming or outgoing app-flow reference group.";
    leaf-list flow {
      type app-flow-ref;
      description
        "List of ingress or egress app-flows.";
    }
  }

  grouping service-sub-layer-group {
    description
      "Incoming or outgoing service sub-layer reference group.";
    leaf-list sub-layer {
      type service-sub-layer-ref;
      description
        "List of incoming or outgoing service sub-layers that have
         to aggregate or disaggregate.";
    }
  }

  grouping forwarding-sub-layer-group {
    description
      "Incoming or outgoing forwarding sub-layer reference group.";
    leaf-list sub-layer {
      type forwarding-sub-layer-ref;
      description
        "List of incoming or outgoing forwarding sub-layers that
         have to aggregate or disaggregate.";
    }
  }

  grouping detnet-header {
    description
      "DetNet header info for DetNet encapsulation or swap.";
    choice header-type {
      description
      "The choice of DetNet header type.";
      case mpls {
        description
          "MPLS label stack for DetNet MPLS encapsulation or
           forwarding.";
        uses rt-types:mpls-label-stack;
      }
      case ip {
        description
          "IPv4/IPv6 packet header for DetNet IP encapsulation.";
        uses ip-header;
      }
    }
  }

  grouping detnet-app-next-hop-content {
    description
      "Generic parameters of DetNet next hops. This follows the
       principles for next hops in RFC 8349";
    choice next-hop-options {
      mandatory true;
      description
        "Options for next hops.  It is expected that further cases
         will be added through
         augments from other modules, e.g., for recursive
         next hops.";
      case simple-next-hop {
        description
          "This case represents a simple next hop consisting of the
           next-hop address and/or outgoing interface.";
        leaf outgoing-interface {
          type if:interface-ref;
          description
            "The outgoing interface, when matching all flows to
             the interface.";
        }
        choice flow-type {
          description
            "The flow type choices.";
          case ip {
            leaf next-hop-address {
              type inet:ip-address-no-zone;
              description
               "The IP next hop case.";
            }
          }
          case mpls {
            uses rt-types:mpls-label-stack;
            description
              "The MPLS Label stack next hop case.";
          }
        }
      }
      case next-hop-list {
        description
          "Container for multiple next hops.";
        list next-hop {
          key "hop-index";
          description
            "An entry in a next-hop list.";
          leaf hop-index {
            type uint8;
            description
              "A user-specified identifier utilized to uniquely
               reference the next-hop entry in the next-hop list.
               The value of this index has no semantic meaning other
               than for referencing the entry.";
          }
          leaf outgoing-interface {
            type if:interface-ref;
            description
              "The outgoing interface, when matching all flows to
               the interface.";
          }
          choice flow-type {
            description
              "The flow types supported.";
            case ip {
              leaf next-hop-address {
                type inet:ip-address-no-zone;
                description
                  "This is the IP flow type next hop.";
              }
            }
            case mpls {
              uses rt-types:mpls-label-stack;
            }
          }
        }
      }
    }
  }

  grouping detnet-forwarding-next-hop-content {
    description
      "Generic parameters of DetNet next hops. This follows the
       principles for next hops in RFC 8349";
    choice next-hop-options {
      mandatory true;
      description
        "Options for next hops.
         It is expected that further cases will be added through
         augments from other modules, e.g., for recursive
         next hops.";
       case simple-next-hop {
        description
          "This case represents a simple next hop consisting of the
           next-hop address and/or outgoing interface.";
        leaf outgoing-interface {
          type if:interface-ref;
          description
            "The outgoing interface, when matching all flows to
             the interface.";
        }
        choice flow-type {
          description
            "These are the flow type next hop choices.";
          case ip {
            choice operation-type {
              description
                "This is the IP forwarding operation choices.";
              case ip-forwarding {
                leaf next-hop-address {
                  type inet:ip-address-no-zone;
                  description
                    "This is an IP address as a next hop.";
                }
              }
              case mpls-over-ip-encapsulation {
                uses ip-header;
              }
            }
          }
          case mpls {
            uses rt-types:mpls-label-stack;
          }
        }
      }
      case next-hop-list {
        description
          "Container for multiple next hops.";
        list next-hop {
          key "hop-index";
          description
            "An entry in a next-hop list.";
          leaf hop-index {
            type uint8;
            description
              "The value of the index for a hop.";
          }
          leaf outgoing-interface {
            type if:interface-ref;
            description
              "The outgoing interface, when matching all flows to
               the interface.";
          }
          choice flow-type {
            description
              "These are the flow type next hop choices.";
            case ip {
              choice operation-type {
                description
                  "These are the next hop choices.";
                case ip-forwarding {
                  leaf next-hop-address {
                    type inet:ip-address-no-zone;
                    description
                      "This is an IP address as a next hop.";
                  }
                }
                case mpls-over-ip-encapsulation {
                  uses ip-header;
                }
              }
            }
            case mpls {
              uses rt-types:mpls-label-stack;
            }
          }
        }
      }
    }
  }

  container detnet {
    description
      "The top level DetNet container. This contains
       applications, service sub-layers and forwarding sub-layers
       as well as the traffic profiles.";
    list traffic-profile {
      key "name";
      description
        "A traffic profile.";
      leaf name {
        type string;
        description
          "An Aggregation group ID.";
      }
      container traffic-requirements {
        description
          "This defines the attributes of the App-flow
           regarding bandwidth, latency, latency variation, loss, and
           misordering tolerance.";
        reference
          "RFC 9016 Section 4.2";
        leaf min-bandwidth {
          type uint64;
          units 'octets per second';
          description
            "This is the minimum bandwidth that has to be
             guaranteed for the DetNet service.  MinBandwidth is
             specified in octets per second.";
          reference
            "RFC 9016 Section 4.2";
        }
        leaf max-latency {
          type uint32;
          units "nanoseconds";
          description
            "This is the maximum latency from Ingress to
             Egress(es) for a single packet of the DetNet flow.
             MaxLatency is specified as an integer number of
             nanoseconds. Any value above the MAX 4,294,967,295
             is displayed as MAX";
          reference
            "RFC 9016 Section 4.2";
        }
        leaf max-latency-variation {
          type uint32;
          units "nanoseconds";
          description
            "This is the difference between the
             minimum and the maximum end-to-end one-way latency.
             MaxLatencyVariation is specified as an integer number of
             nanoseconds.";
          reference
            "RFC 9016 Section 4.2";
        }
        leaf max-loss {
          type uint32;
          description
            "This defines the maximum Packet Loss Ratio (PLR)
             parameter for the DetNet service between the Ingress and
             Egress(es) of the DetNet domain.";
          reference
            "RFC 9016 Section 4.2";
        }
        leaf max-consecutive-loss-tolerance {
          type uint32;
          units "packets";
          description
            "Some applications have special loss requirement, such
             as MaxConsecutiveLossTolerance.  The maximum consecutive
             loss tolerance parameter describes the maximum number of
             consecutive packets whose loss can be tolerated.  The
             maximum consecutive loss tolerance can be measured for
             example based on sequence number.";
          reference
            "RFC 9016 Section 4.2";
        }
        leaf max-misordering {
          type uint32;
          units "packets";
          description
            "This describes the tolerable maximum number
             of packets that can be received out of order.  The
             maximum allowed misordering can be measured for example
             based on sequence number.  The value zero for the
             maximum allowed misordering indicates that in order
             delivery is required, misordering cannot be tolerated.";
          reference
            "RFC 9016 Section 4.2";
        }
      }
      container traffic-spec {
        description
          "Flow-specification specifies how the Source transmits
           packets for the flow.  This is the promise/request of the
           Source to the network.  The network uses this flow
           specification to allocate resources and adjust queue
           parameters in network nodes.";
        reference
          "RFC 9016 Section 5.5";
        leaf interval {
          type uint32;
          units "nanoseconds";
          description
            "The period of time in which the traffic
             specification should not be exceeded.";
          reference
            "RFC 9016 Section 5.5, IEEE802.1Q";
        }
        leaf max-pkts-per-interval {
          type uint32;
          description
            "The maximum number of packets that the
             source will transmit in one interval.";
          reference
            "RFC 9016 Section 5.5, IEEE802.1Q";
        }
        leaf max-payload-size {
          type uint32;
          description
            "The maximum payload size that the source
             will transmit.";
          reference
            "RFC 9016 Section 5.5, IEEE802.1Q";
        }
        leaf min-payload-size {
          type uint32;
          description
            "The minimum payload size that the source
             will transmit., IEEE802.1Q";
        }
        leaf min-pkts-per-interval {
          type uint32;
          description
            "The minimum number of packets that the
             source will transmit in one interval.";
          reference
            "RFC 9016 Section 5.5, IEEE802.1Q";
        }
      }
      leaf-list member-apps {
        type app-flow-ref;
        config false;
        description
          "A list of Applications attached to this profile.  Each
          application that uses a profile has an automatically
          populated reference.";
        reference
          "RFC XXXX: Deterministic Networking (DetNet) YANG Model
          Section 5";
      }
      leaf-list member-services {
        type service-sub-layer-ref;
        config false;
        description
          "A list of Service Sub-layers attached to this profile.
          Each Service Sub-layers that uses a profile has an
          automatically populated reference.";
        reference
          "RFC XXXX: Deterministic Networking (DetNet) YANG Model
          Section 5";
      }
      leaf-list member-fwd-sublayers {
        type forwarding-sub-layer-ref;
        config false;
        description
          "A list of Forwarding Sub-layers attached to this profile.
          Each Forwarding Sub-layers that uses a profile has an
          automatically populated reference.";
        reference
          "RFC XXXX: Deterministic Networking (DetNet) YANG Model
          Section 5";
      }
    }
    container app-flows {
      description
        "The DetNet app-flow configuration.";
      reference
        "RFC 9016 Section 4.1";
      list app-flow {
        key "name";
        description
          "A unique (management) identifier of the App-flow.";
        leaf name {
          type string;
          description
            "A unique (management) identifier of the App-flow.";
          reference
            "RFC 9016
             Sections 4.1, 5.1";
        }
        leaf bidir-congruent {
          type boolean;
          default false;
          description
            "Defines the data path requirement of the App-flow
             whether it must share the same data path and physical
             path for both directions through the network, e.g., to
             provide congruent paths in the two directions.";
          reference
            "RFC 9016
             Section 4.2";
        }
        leaf outgoing-service {
          type service-sub-layer-ref;
          config false;
          description
            "Binding to this applications outgoing
             service.";
        }
        leaf incoming-service {
          type service-sub-layer-ref;
          config false;
          description
            "Binding to this applications incoming service.";
        }
        leaf traffic-profile {
          type traffic-profile-ref;
          description
            "The Traffic Profile for this group.";
        }
        container ingress {
          description
            "Ingress DetNet application flows or a compound flow.";
          leaf app-flow-status {
            type identityref {
              base app-status;
            }
            default none;
            config false;
            description
              "Status of ingress application flow. This is an
               operational status and defaults to none if
               incomplete.";
            reference
              "RFC 9016 Sections
               4.1, 5.8";
          }
          leaf interface {
            type if:interface-ref;
            mandatory true;
            description
            "Interface is used for any service type when
             matching all flows to the interface.";
          }
          uses data-flow-spec;
        } //End of app-ingress
        container egress {
          description
            "Route's next-hop attribute.";
          choice application-type {
            description
              "This is the application type choices.";
            container ethernet {
              description
                "This is TSN unaware traffic that maps to an
                interface.";
              leaf interface {
                type if:interface-ref;
                description
                  "This is an Ethernet or TSN interfaces.";
              }
            }
            container ip-mpls {
              description
                "This is IP or MPLS DetNet application types.";
              uses detnet-app-next-hop-content;
            }
          }
        }
      }
    }
    container service {
      description
        "The DetNet service sub-layer configuration.";
      list sub-layer {
        key "name";
        description
          "Services are indexed by name.";
        leaf name {
          type string;
          description
            "The name of the DetNet service sub-layer.";
        }
        leaf service-rank {
          type uint8;
          default 255;
          description
            "The DetNet rank for this service. Defaults to 255
            lowest rank if not specified.";
          reference
            "RFC 9016 Section 5.7.";
        }
        leaf traffic-profile {
          type traffic-profile-ref;
          description
            "The Traffic Profile for this service.";
        }
        container service-protection {
          description
            "This is the service protection type and sequence number
             options.";
          leaf protection {
            type service-protection;
            description
              "The DetNet service protection type such as
              Packet Replication Function (PRF),
              Packet Elimination Function (PEF),
              Packet Replication, Elimination, and Ordering Functions
              (PREOF).";
            reference
              "RFC 8938 Section 4.3";
          }
          leaf sequence-number-length {
            type sequence-number-field;
            default zero-sn;
            description
              "Sequence number field length can be one of 0 (none),
               16-bits or 28-bits. The default is none.";
          }
        }
        leaf operation {
          type operation;
          description
            "This is the service operation type for this service
             sub-layer;";
        }
        container incoming {
          description
            "The DetNet service sub-layer incoming configuration.";
          choice incoming {
            mandatory true;
            description
              "A service sub-layer may have App flows or other
               service sub-layers.";
            container app-flow {
              description
                "This service sub-layer is related to the app-flows
                 of the upper layer and provide ingress proxy or
                 ingress aggregation at the ingress node.";
              uses app-flows-group;
            }
            container service-aggregation {
              description
                "This service sub-layer is related to the service
                 sub-layer of the upper layer and provide
                 service-to-service aggregation at the ingress node
                 or relay node.";
              uses service-sub-layer-group;
            }
            container forwarding-aggregation {
              description
                "This service sub-layer is related to the forwarding
                 sub-layer of the upper layer and provide
                 forwarding-to-service aggregation at the ingress
                 node or relay node.";
              uses forwarding-sub-layer-group;
            }
            container service-id {
              description
                "This service sub-layer is related to the service or
                 forwarding sub-layer of the lower layer and provide
                 DetNet service relay or termination at the relay
                 node or egress node.";
              uses detnet-flow-spec;
            }
          }
        }
        container outgoing {
          description
            "The DetNet service sub-layer outgoing configuration.";
          choice outgoing {
            mandatory true;
            description
              "The outgoing type may be a forwarding Sub-layer or a
               service sub-layer or aggregation type.";
            container forwarding-sub-layer {
              description
                "This service sub-layer is sent to the forwarding
                 sub-layers of the lower layer for DetNet service
                 forwarding or service-to-forwarding aggregation at
                 the ingress node or relay node.  When the operation
                 type is service-initiation, The service sub-layer
                 encapsulates the DetNet Control-Word and services
                 label, which are for individual DetNet flow when the
                 incoming type is app-flow and for aggregated DetNet
                 flow when the incoming type is service or
                 forwarding.  The service sub-layer swaps the service
                 label when the operation type is service-relay.";
              reference
                "RFC 8964 Section 4.2.1 and 4.2.2.";
              list service-outgoing {
                key "index";
                description
                  "List of the outgoing service
                   that separately for each node
                   where services will be eliminated.";
                leaf index {
                  type uint8;
                  description
                    "This index allows a list of multiple outgoing
                     forwarding sub-layers";
                }
                uses detnet-header;
                uses forwarding-sub-layer-group;
              }
            }
            container service-sub-layer {
              description
                "This service sub-layer is sent to the service
                 sub-layers of the lower layer for service-to-service
                 aggregation at the ingress node or relay node.  The
                 service sub-layer encapsulates the DetNet
                 Control-Word and S-label when the operation type is
                 service-initiation, and swaps the S-label when the
                 operation type is service-relay.";
              reference
                "RFC 8964 Section 4.2.1 and 4.2.2.";
              leaf aggregation-sub-layer {
                type service-sub-layer-ref;
                description
                  "reference point of the service-sub-layer
                   at which this service will be aggregated.";
              }
              container service-label {
                description
                  "This is the MPLS service sub-layer label. This
                  is optional and only used when the service
                  sublayer uses MPLS. It is an MPLS stack since
                  more than a single label may be used.";
                uses rt-types:mpls-label-stack;
              }
            }
            container app-flow {
              description
                "This service sub-layer is sent to the app-flow of
                 the upper layer for egress proxy at the egress node,
                 and decapsulates the DetNet Control-Word and S-label
                 for individual DetNet service.  This outgoing type
                 only can be chosen when the operation type is
                 service-termination.";
              reference
                "RFC 8964 Section 4.2.1 and 4.2.2.";
              uses app-flows-group;
            }
            container service-disaggregation {
              description
                "This service sub-layer is sent to the service
                 sub-layer of the upper layer for service-to-service
                 disaggregation at the relay node or egress node, and
                 decapsulates the DetNet Control-Word and A-label for
                 aggregated DetNet service.  This outgoing type only
                 can be chosen when the operation type is
                 service-termination.";
              reference
                "RFC 8964 Section 4.2.1 and 4.2.2.";
              uses service-sub-layer-group;
            }
            container forwarding-disaggregation {
              description
                "This service sub-layer is sent to the forwarding
                 sub-layer of the upper layer for
                 forwarding-to-service disaggregation at the relay
                 node or egress node, and decapsulates the DetNet
                 Control-Word and A-label for aggregated DetNet
                 service.  This outgoing type only can be chosen when
                 the operation type is service-termination.";
              reference
                "RFC 8964 Section 4.2.1 and 4.2.2.";
              uses forwarding-sub-layer-group;
            }
          }
        }
      }
    }
    container forwarding {
      description
        "The DetNet forwarding sub-layer configuration.";
      list sub-layer {
        key "name";
        description
          "The List is one or more DetNet Traffic types.";
        leaf name {
          type string;
          description
            "The name of the DetNet forwarding sub-layer.";
        }
        leaf traffic-profile {
          type traffic-profile-ref;
          description
            "The Traffic Profile for this group.";
        }
        leaf operation {
          type forwarding-operations;
          description
            "This is the forwarding operation types
             impose-and-forward, pop-and-forward,
             pop-impose-and-forward, forward, pop-and-lookup.";
        }
        container incoming {
          description
            "The DetNet forwarding sub-layer incoming
             configuration.";
          choice incoming {
            mandatory true;
            description
              "Cases of incoming types.";
            container service-sub-layer {
              description
                "This forwarding sub-layer is related to the service
                 sub-layers of the upper layer and provide DetNet
                 forwarding or service-to-forwarding aggregation at
                 the ingress node or relay node.";
              uses service-sub-layer-group;
            }
            container forwarding-aggregation {
              description
                "This forwarding sub-layer is related to the
                 forwarding sub-layer of the upper layer and provide
                 forwarding-to-forwarding aggregation at the ingress
                 node or relay node or transit node.";
              uses forwarding-sub-layer-group;
            }
            container forwarding-id  {
              description
                "This forwarding sub-layer is related to all of the
                 lower layer and provide DetNet forwarding swap or
                 termination at the transit node or relay node or
                 egress node.";
              leaf interface {
                type if:interface-ref;
                description
                  "This is the interface associated with the
                   forwarding sub-layer.";
              }
              uses detnet-flow-spec;
            }
          }
        }
        container outgoing {
          description
            "The DetNet forwarding sub-layer outbound
             configuration.";
          choice outgoing {
            mandatory true;
            description
              "This is when a service connected directly to an
              interface with no forwarding sub-layer.";
            container
              interface {
              description
                "This forwarding sub-layer is sent to the interface
                 for send to next-hop at the ingress node or relay
                 node or transit node.";
              uses detnet-forwarding-next-hop-content;
            }
            container service-aggregation {
              description
                "This forwarding sub-layer is sent to the service
                 sub-layers of the lower layer for
                 forwarding-to-service aggregation at the ingress
                 node or relay node.";
              leaf aggregation-sub-layer {
                type service-sub-layer-ref;
                description
                  "This is a reference to the service sub-layer.";
              }
              container optional-forwarding-label {
                description
                  "This is the optional forwarding label for service
                   aggregation.";
                uses rt-types:mpls-label-stack;
              }
            }
            container forwarding-sub-layer {
              description
                "This forwarding sub-layer is sent to the forwarding
                 sub-layers of the lower layer for
                 forwarding-to-forwarding aggregation at the ingress
                 node or relay node or transit node.";
              leaf aggregation-sub-layer {
                type forwarding-sub-layer-ref;
                description
                  "This is a reference to the forwarding sub-layer.";
              }
              container forwarding-label {
                description
                  "This is the forwarding label for forwarding
                   sub-layer aggregation.";
                uses rt-types:mpls-label-stack;
              }
            }
            container service-sub-layer {
              description
                "This forwarding sub-layer is sent to the service
                 sub-layer of the upper layer and decapsulate the
                 F-label for DetNet service or service-to-forwarding
                 disaggregation at the relay node or egress node.
                 This outgoing type only can be chosen when the
                 operation type is pop-and-lookup.";
              uses service-sub-layer-group;
            }
            container forwarding-disaggregation {
              description
                "This forwarding sub-layer is sent to the forwarding
                 sub-layer of the upper layer and decapsulate the
                 F-label for forwarding-to-forwarding disaggregation
                 at the transit node or relay node or egress node.
                 This outgoing type only can be chosen when the
                 operation type is pop-and-lookup.";
              uses forwarding-sub-layer-group;
            }
          }
        }
      }
    }
  }
}

<CODE ENDS>

10. IANA Considerations

This document registers a URI in the "IETF XML Registry" [RFC3688]. Following the format in [RFC3688], the following registration is requested to be made:

ID:
yang:ietf-detnet
URI:
urn:ietf:params:xml:ns:yang:ietf-detnet
Registrant Contact:
The IESG.
XML:
N/A, the requested URI is an XML namespace.

This document registers YANG modules in the "YANG Module Names" registry [RFC6020].

Name:
ietf-detnet
Maintained by IANA:
N
Namespace:
urn:ietf:params:xml:ns:yang:ietf-detnet
Prefix:
dnet
Reference:
This RFC when published.

10. Security Considerations

Security considerations for DetNet are covered in the DetNet Archtiecture [RFC8655].

The YANG modules specified in this document define a schema for data that is designed to be accessed via network management protocols, such as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer is the secure transport layer, and the mandatory-to-implement secure transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer is HTTPS, and the mandatory-to-implement secure transport is TLS [RFC8446].

The Network Configuration Access Control Model (NACM) [RFC8341] provides the means to restrict access for particular NETCONF or RESTCONF users to a preconfigured subset of all available NETCONF or RESTCONF protocol operations and content.

There are a number of data nodes defined in the modules that are writable/creatable/deletable (i.e., config true, which is the default). These data nodes may be considered sensitive or vulnerable in some network environments. Write operations (e.g., edit-config) to these data nodes without proper protection can break or incorrectly connect DetNet flows.

11. Contributors

The editors of this document wish to thank and acknowledge the following people who contributed substantially to the content of this document and should be considered coauthors:

Mach(Guoyi) Chen
Huawei Technologies

12. Acknowledgments

The editors of this document would like to thank Lou Berger, Tom Petch and Xufeng Lui for their detailed comments.

13. References

13.1. Normative References

[RFC2119]
Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, , <https://www.rfc-editor.org/info/rfc2119>.
[RFC3688]
Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, DOI 10.17487/RFC3688, , <https://www.rfc-editor.org/info/rfc3688>.
[RFC4303]
Kent, S., "IP Encapsulating Security Payload (ESP)", RFC 4303, DOI 10.17487/RFC4303, , <https://www.rfc-editor.org/info/rfc4303>.
[RFC6020]
Bjorklund, M., Ed., "YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)", RFC 6020, DOI 10.17487/RFC6020, , <https://www.rfc-editor.org/info/rfc6020>.
[RFC6241]
Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed., and A. Bierman, Ed., "Network Configuration Protocol (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, , <https://www.rfc-editor.org/info/rfc6241>.
[RFC6242]
Wasserman, M., "Using the NETCONF Protocol over Secure Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, , <https://www.rfc-editor.org/info/rfc6242>.
[RFC6991]
Schoenwaelder, J., Ed., "Common YANG Data Types", RFC 6991, DOI 10.17487/RFC6991, , <https://www.rfc-editor.org/info/rfc6991>.
[RFC7950]
Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, , <https://www.rfc-editor.org/info/rfc7950>.
[RFC8040]
Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF Protocol", RFC 8040, DOI 10.17487/RFC8040, , <https://www.rfc-editor.org/info/rfc8040>.
[RFC8174]
Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, , <https://www.rfc-editor.org/info/rfc8174>.
[RFC8341]
Bierman, A. and M. Bjorklund, "Network Configuration Access Control Model", STD 91, RFC 8341, DOI 10.17487/RFC8341, , <https://www.rfc-editor.org/info/rfc8341>.
[RFC8349]
Lhotka, L., Lindem, A., and Y. Qu, "A YANG Data Model for Routing Management (NMDA Version)", RFC 8349, DOI 10.17487/RFC8349, , <https://www.rfc-editor.org/info/rfc8349>.
[RFC8446]
Rescorla, E., "The Transport Layer Security (TLS) Protocol Version 1.3", RFC 8446, DOI 10.17487/RFC8446, , <https://www.rfc-editor.org/info/rfc8446>.
[RFC8655]
Finn, N., Thubert, P., Varga, B., and J. Farkas, "Deterministic Networking Architecture", RFC 8655, DOI 10.17487/RFC8655, , <https://www.rfc-editor.org/info/rfc8655>.
[RFC8960]
Saad, T., Raza, K., Gandhi, R., Liu, X., and V. Beeram, "A YANG Data Model for MPLS Base", RFC 8960, DOI 10.17487/RFC8960, , <https://www.rfc-editor.org/info/rfc8960>.
[RFC8964]
Varga, B., Ed., Farkas, J., Berger, L., Malis, A., Bryant, S., and J. Korhonen, "Deterministic Networking (DetNet) Data Plane: MPLS", RFC 8964, DOI 10.17487/RFC8964, , <https://www.rfc-editor.org/info/rfc8964>.

13.2. Informative References

[IEEE8021Q]
IEEE, "IEEE Standard for Local and Metropolitan Area Networks--Bridges and Bridged Networks", DOI 10.1109/IEEESTD.2018.8403927, IEEE 802.1Q-2018, , <https://ieeexplore.ieee.org/document/8403927>.
[RFC8340]
Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, , <https://www.rfc-editor.org/info/rfc8340>.
[RFC9016]
Varga, B., Farkas, J., Cummings, R., Jiang, Y., and D. Fedyk, "Flow and Service Information Model for Deterministic Networking (DetNet)", RFC 9016, DOI 10.17487/RFC9016, , <https://www.rfc-editor.org/info/rfc9016>.

Appendix A. DetNet Configuration YANG Tree

This is the full YANG tree as described in [RFC8340].

module: ietf-detnet
  +--rw detnet
     +--rw traffic-profile* [name]
     |  +--rw name                    string
     |  +--rw traffic-requirements
     |  |  +--rw min-bandwidth?                    uint64
     |  |  +--rw max-latency?                      uint32
     |  |  +--rw max-latency-variation?            uint32
     |  |  +--rw max-loss?                         uint32
     |  |  +--rw max-consecutive-loss-tolerance?   uint32
     |  |  +--rw max-misordering?                  uint32
     |  +--rw traffic-spec
     |  |  +--rw interval?                uint32
     |  |  +--rw max-pkts-per-interval?   uint32
     |  |  +--rw max-payload-size?        uint32
     |  |  +--rw min-payload-size?        uint32
     |  |  +--rw min-pkts-per-interval?   uint32
     |  +--ro member-apps*            app-flow-ref
     |  +--ro member-services*        service-sub-layer-ref
     |  +--ro member-fwd-sublayers*   forwarding-sub-layer-ref
     +--rw app-flows
     |  +--rw app-flow* [name]
     |     +--rw name                string
     |     +--rw bidir-congruent?    boolean
     |     +--ro outgoing-service?   service-sub-layer-ref
     |     +--ro incoming-service?   service-sub-layer-ref
     |     +--rw traffic-profile?    traffic-profile-ref
     |     +--rw ingress
     |     |  +--ro app-flow-status?       identityref
     |     |  +--rw interface              if:interface-ref
     |     |  +--rw (data-flow-type)?
     |     |     +--:(tsn-app-flow)
     |     |     |  +--rw tsn-app-flow
     |     |     |     +--rw source-mac-address?
     |     |     |     |       yang:mac-address
     |     |     |     +--rw destination-mac-address?
     |     |     |     |       yang:mac-address
     |     |     |     +--rw ethertype?
     |     |     |     |       ethertypes:ethertype
     |     |     |     +--rw vlan-id?
     |     |     |     |       dot1q-types:vlanid
     |     |     |     +--rw pcp?
     |     |     |             dot1q-types:priority-type
     |     |     +--:(ip-app-flow)
     |     |     |  +--rw ip-app-flow
     |     |     |     +--rw src-ip-prefix?          inet:ip-prefix
     |     |     |     +--rw dest-ip-prefix?         inet:ip-prefix
     |     |     |     +--rw protocol-next-header?   uint8
     |     |     |     +--rw dscp?                   inet:dscp
     |     |     |     +--rw flow-label?
     |     |     |     |       inet:ipv6-flow-label
     |     |     |     +--rw source-port
     |     |     |     |  +--rw (port-range-or-operator)?
     |     |     |     |     +--:(range)
     |     |     |     |     |  +--rw lower-port
     |     |     |     |     |  |       inet:port-number
     |     |     |     |     |  +--rw upper-port
     |     |     |     |     |          inet:port-number
     |     |     |     |     +--:(operator)
     |     |     |     |        +--rw operator?     operator
     |     |     |     |        +--rw port          inet:port-number
     |     |     |     +--rw destination-port
     |     |     |     |  +--rw (port-range-or-operator)?
     |     |     |     |     +--:(range)
     |     |     |     |     |  +--rw lower-port
     |     |     |     |     |  |       inet:port-number
     |     |     |     |     |  +--rw upper-port
     |     |     |     |     |          inet:port-number
     |     |     |     |     +--:(operator)
     |     |     |     |        +--rw operator?     operator
     |     |     |     |        +--rw port          inet:port-number
     |     |     |     +--rw ipsec-spi?              ipsec-spi
     |     |     +--:(mpls-app-flow)
     |     |        +--rw mpls-app-flow
     |     |           +--rw (label-space)?
     |     |              +--:(context-label-space)
     |     |              |  +--rw mpls-label-stack
     |     |              |     +--rw entry* [id]
     |     |              |        +--rw id               uint8
     |     |              |        +--rw label?
     |     |              |        |       rt-types:mpls-label
     |     |              |        +--rw ttl?             uint8
     |     |              |        +--rw traffic-class?   uint8
     |     |              +--:(platform-label-space)
     |     |                 +--rw label?
     |     |                         rt-types:mpls-label
     |     +--rw egress
     |        +--rw (application-type)?
     |           +--:(ethernet)
     |           |  +--rw ethernet
     |           |     +--rw interface?   if:interface-ref
     |           +--:(ip-mpls)
     |              +--rw ip-mpls
     |                 +--rw (next-hop-options)
     |                    +--:(simple-next-hop)
     |                    |  +--rw outgoing-interface?
     |                    |  |       if:interface-ref
     |                    |  +--rw (flow-type)?
     |                    |     +--:(ip)
     |                    |     |  +--rw next-hop-address?
     |                    |     |          inet:ip-address-no-zone
     |                    |     +--:(mpls)
     |                    |        +--rw mpls-label-stack
     |                    |           +--rw entry* [id]
     |                    |              +--rw id               uint8
     |                    |              +--rw label?
     |                    |              |       rt-types:mpls-label
     |                    |              +--rw ttl?             uint8
     |                    |              +--rw traffic-class?   uint8
     |                    +--:(next-hop-list)
     |                       +--rw next-hop* [hop-index]
     |                          +--rw hop-index                 uint8
     |                          +--rw outgoing-interface?
     |                          |       if:interface-ref
     |                          +--rw (flow-type)?
     |                             +--:(ip)
     |                             |  +--rw next-hop-address?
     |                             |          inet:ip-address-no-zone
     |                             +--:(mpls)
     |                                +--rw mpls-label-stack
     |                                   +--rw entry* [id]
     |                                      +--rw id
     |                                      |       uint8
     |                                      +--rw label?
     |                                      |       rt-types:mpls-label
     |                                      +--rw ttl?
     |                                      |       uint8
     |                                      +--rw traffic-class?
     |                                              uint8
     +--rw service
     |  +--rw sub-layer* [name]
     |     +--rw name                  string
     |     +--rw service-rank?         uint8
     |     +--rw traffic-profile?      traffic-profile-ref
     |     +--rw service-protection
     |     |  +--rw protection?               service-protection
     |     |  +--rw sequence-number-length?   sequence-number-field
     |     +--rw operation?            operation
     |     +--rw incoming
     |     |  +--rw (incoming)
     |     |     +--:(app-flow)
     |     |     |  +--rw app-flow
     |     |     |     +--rw flow*   app-flow-ref
     |     |     +--:(service-aggregation)
     |     |     |  +--rw service-aggregation
     |     |     |     +--rw sub-layer*   service-sub-layer-ref
     |     |     +--:(forwarding-aggregation)
     |     |     |  +--rw forwarding-aggregation
     |     |     |     +--rw sub-layer*   forwarding-sub-layer-ref
     |     |     +--:(service-id)
     |     |        +--rw service-id
     |     |           +--rw (detnet-flow-type)?
     |     |              +--:(ip-detnet-flow)
     |     |              |  +--rw src-ip-prefix?
     |     |              |  |       inet:ip-prefix
     |     |              |  +--rw dest-ip-prefix?
     |     |              |  |       inet:ip-prefix
     |     |              |  +--rw protocol-next-header?     uint8
     |     |              |  +--rw dscp?                     inet:dscp
     |     |              |  +--rw flow-label?
     |     |              |  |       inet:ipv6-flow-label
     |     |              |  +--rw source-port
     |     |              |  |  +--rw (port-range-or-operator)?
     |     |              |  |     +--:(range)
     |     |              |  |     |  +--rw lower-port
     |     |              |  |     |  |       inet:port-number
     |     |              |  |     |  +--rw upper-port
     |     |              |  |     |          inet:port-number
     |     |              |  |     +--:(operator)
     |     |              |  |        +--rw operator?     operator
     |     |              |  |        +--rw port
     |     |              |  |                inet:port-number
     |     |              |  +--rw destination-port
     |     |              |  |  +--rw (port-range-or-operator)?
     |     |              |  |     +--:(range)
     |     |              |  |     |  +--rw lower-port
     |     |              |  |     |  |       inet:port-number
     |     |              |  |     |  +--rw upper-port
     |     |              |  |     |          inet:port-number
     |     |              |  |     +--:(operator)
     |     |              |  |        +--rw operator?     operator
     |     |              |  |        +--rw port
     |     |              |  |                inet:port-number
     |     |              |  +--rw ipsec-spi?                ipsec-spi
     |     |              +--:(mpls-detnet-flow)
     |     |                 +--rw (label-space)?
     |     |                    +--:(context-label-space)
     |     |                    |  +--rw mpls-label-stack
     |     |                    |     +--rw entry* [id]
     |     |                    |        +--rw id               uint8
     |     |                    |        +--rw label?
     |     |                    |        |       rt-types:mpls-label
     |     |                    |        +--rw ttl?             uint8
     |     |                    |        +--rw traffic-class?   uint8
     |     |                    +--:(platform-label-space)
     |     |                       +--rw label?
     |     |                               rt-types:mpls-label
     |     +--rw outgoing
     |        +--rw (outgoing)
     |           +--:(forwarding-sub-layer)
     |           |  +--rw forwarding-sub-layer
     |           |     +--rw service-outgoing* [index]
     |           |        +--rw index                         uint8
     |           |        +--rw (header-type)?
     |           |        |  +--:(mpls)
     |           |        |  |  +--rw mpls-label-stack
     |           |        |  |     +--rw entry* [id]
     |           |        |  |        +--rw id               uint8
     |           |        |  |        +--rw label?
     |           |        |  |        |       rt-types:mpls-label
     |           |        |  |        +--rw ttl?             uint8
     |           |        |  |        +--rw traffic-class?   uint8
     |           |        |  +--:(ip)
     |           |        |     +--rw src-ip-address?
     |           |        |     |       inet:ip-address-no-zone
     |           |        |     +--rw dest-ip-address?
     |           |        |     |       inet:ip-address-no-zone
     |           |        |     +--rw protocol-next-header?   uint8
     |           |        |     +--rw dscp?
     |           |        |     |       inet:dscp
     |           |        |     +--rw flow-label?
     |           |        |     |       inet:ipv6-flow-label
     |           |        |     +--rw source-port?
     |           |        |     |       inet:port-number
     |           |        |     +--rw destination-port?
     |           |        |             inet:port-number
     |           |        +--rw sub-layer*
     |           |                forwarding-sub-layer-ref
     |           +--:(service-sub-layer)
     |           |  +--rw service-sub-layer
     |           |     +--rw aggregation-sub-layer?
     |           |     |       service-sub-layer-ref
     |           |     +--rw service-label
     |           |        +--rw mpls-label-stack
     |           |           +--rw entry* [id]
     |           |              +--rw id               uint8
     |           |              +--rw label?
     |           |              |       rt-types:mpls-label
     |           |              +--rw ttl?             uint8
     |           |              +--rw traffic-class?   uint8
     |           +--:(app-flow)
     |           |  +--rw app-flow
     |           |     +--rw flow*   app-flow-ref
     |           +--:(service-disaggregation)
     |           |  +--rw service-disaggregation
     |           |     +--rw sub-layer*   service-sub-layer-ref
     |           +--:(forwarding-disaggregation)
     |              +--rw forwarding-disaggregation
     |                 +--rw sub-layer*   forwarding-sub-layer-ref
     +--rw forwarding
        +--rw sub-layer* [name]
           +--rw name               string
           +--rw traffic-profile?   traffic-profile-ref
           +--rw operation?         forwarding-operations
           +--rw incoming
           |  +--rw (incoming)
           |     +--:(service-sub-layer)
           |     |  +--rw service-sub-layer
           |     |     +--rw sub-layer*   service-sub-layer-ref
           |     +--:(forwarding-aggregation)
           |     |  +--rw forwarding-aggregation
           |     |     +--rw sub-layer*   forwarding-sub-layer-ref
           |     +--:(forwarding-id)
           |        +--rw forwarding-id
           |           +--rw interface?
           |           |       if:interface-ref
           |           +--rw (detnet-flow-type)?
           |              +--:(ip-detnet-flow)
           |              |  +--rw src-ip-prefix?
           |              |  |       inet:ip-prefix
           |              |  +--rw dest-ip-prefix?
           |              |  |       inet:ip-prefix
           |              |  +--rw protocol-next-header?     uint8
           |              |  +--rw dscp?                     inet:dscp
           |              |  +--rw flow-label?
           |              |  |       inet:ipv6-flow-label
           |              |  +--rw source-port
           |              |  |  +--rw (port-range-or-operator)?
           |              |  |     +--:(range)
           |              |  |     |  +--rw lower-port
           |              |  |     |  |       inet:port-number
           |              |  |     |  +--rw upper-port
           |              |  |     |          inet:port-number
           |              |  |     +--:(operator)
           |              |  |        +--rw operator?     operator
           |              |  |        +--rw port
           |              |  |                inet:port-number
           |              |  +--rw destination-port
           |              |  |  +--rw (port-range-or-operator)?
           |              |  |     +--:(range)
           |              |  |     |  +--rw lower-port
           |              |  |     |  |       inet:port-number
           |              |  |     |  +--rw upper-port
           |              |  |     |          inet:port-number
           |              |  |     +--:(operator)
           |              |  |        +--rw operator?     operator
           |              |  |        +--rw port
           |              |  |                inet:port-number
           |              |  +--rw ipsec-spi?                ipsec-spi
           |              +--:(mpls-detnet-flow)
           |                 +--rw (label-space)?
           |                    +--:(context-label-space)
           |                    |  +--rw mpls-label-stack
           |                    |     +--rw entry* [id]
           |                    |        +--rw id               uint8
           |                    |        +--rw label?
           |                    |        |       rt-types:mpls-label
           |                    |        +--rw ttl?             uint8
           |                    |        +--rw traffic-class?   uint8
           |                    +--:(platform-label-space)
           |                       +--rw label?
           |                               rt-types:mpls-label
           +--rw outgoing
              +--rw (outgoing)
                 +--:(interface)
                 |  +--rw interface
                 |     +--rw (next-hop-options)
                 |        +--:(simple-next-hop)
                 |        |  +--rw outgoing-interface?
                 |        |  |       if:interface-ref
                 |        |  +--rw (flow-type)?
                 |        |     +--:(ip)
                 |        |     |  +--rw (operation-type)?
                 |        |     |     +--:(ip-forwarding)
                 |        |     |     |  +--rw next-hop-address?
                 |        |     |     |        inet:ip-address-no-zone
                 |        |     |     +--:(mpls-over-ip-encapsulation)
                 |        |     |        +--rw src-ip-address?
                 |        |     |        |     inet:ip-address-no-zone
                 |        |     |        +--rw dest-ip-address?
                 |        |     |        |     inet:ip-address-no-zone
                 |        |     |        +--rw protocol-next-header?
                 |        |     |        |       uint8
                 |        |     |        +--rw dscp?
                 |        |     |        |       inet:dscp
                 |        |     |        +--rw flow-label?
                 |        |     |        |       inet:ipv6-flow-label
                 |        |     |        +--rw source-port?
                 |        |     |        |       inet:port-number
                 |        |     |        +--rw destination-port?
                 |        |     |                inet:port-number
                 |        |     +--:(mpls)
                 |        |        +--rw mpls-label-stack
                 |        |           +--rw entry* [id]
                 |        |              +--rw id               uint8
                 |        |              +--rw label?
                 |        |              |       rt-types:mpls-label
                 |        |              +--rw ttl?             uint8
                 |        |              +--rw traffic-class?   uint8
                 |        +--:(next-hop-list)
                 |           +--rw next-hop* [hop-index]
                 |              +--rw hop-index
                 |              |       uint8
                 |              +--rw outgoing-interface?
                 |              |       if:interface-ref
                 |              +--rw (flow-type)?
                 |                 +--:(ip)
                 |                 |  +--rw (operation-type)?
                 |                 |     +--:(ip-forwarding)
                 |                 |     |  +--rw next-hop-address?
                 |                 |     |     inet:ip-address-no-zone
                 |                 |     +--:(mpls-over-ip-
                 |                 |          encapsulation)
                 |                 |        +--rw src-ip-address?
                 |                 |        |  inet:ip-address-no-zone
                 |                 |        +--rw dest-ip-address?
                 |                 |        |  inet:ip-address-no-zone
                 |                 |        +--rw protocol-next-header?
                 |                 |        |       uint8
                 |                 |        +--rw dscp?
                 |                 |        |       inet:dscp
                 |                 |        +--rw flow-label?
                 |                 |        |       inet:ipv6-flow-label
                 |                 |        +--rw source-port?
                 |                 |        |       inet:port-number
                 |                 |        +--rw destination-port?
                 |                 |                inet:port-number
                 |                 +--:(mpls)
                 |                    +--rw mpls-label-stack
                 |                       +--rw entry* [id]
                 |                          +--rw id
                 |                          |       uint8
                 |                          +--rw label?
                 |                          |       rt-types:mpls-label
                 |                          +--rw ttl?
                 |                          |       uint8
                 |                          +--rw traffic-class?
                 |                                  uint8
                 +--:(service-aggregation)
                 |  +--rw service-aggregation
                 |     +--rw aggregation-sub-layer?
                 |     |       service-sub-layer-ref
                 |     +--rw optional-forwarding-label
                 |        +--rw mpls-label-stack
                 |           +--rw entry* [id]
                 |              +--rw id               uint8
                 |              +--rw label?
                 |              |       rt-types:mpls-label
                 |              +--rw ttl?             uint8
                 |              +--rw traffic-class?   uint8
                 +--:(forwarding-sub-layer)
                 |  +--rw forwarding-sub-layer
                 |     +--rw aggregation-sub-layer?
                 |     |       forwarding-sub-layer-ref
                 |     +--rw forwarding-label
                 |        +--rw mpls-label-stack
                 |           +--rw entry* [id]
                 |              +--rw id               uint8
                 |              +--rw label?
                 |              |       rt-types:mpls-label
                 |              +--rw ttl?             uint8
                 |              +--rw traffic-class?   uint8
                 +--:(service-sub-layer)
                 |  +--rw service-sub-layer
                 |     +--rw sub-layer*   service-sub-layer-ref
                 +--:(forwarding-disaggregation)
                    +--rw forwarding-disaggregation
                       +--rw sub-layer*   forwarding-sub-layer-ref

Appendix B. Examples

The following examples are provided. These examples are tested with Yanglint and use operational output to exercise both config true and config false objects. Note that IPv4 and IPv6 addresses are supported but for clarity in the examples and diagrams IPv4 has been used in most examples. The IP types are imported from [RFC6991] and these support both IPv4 and IPv6.

The following are examples of aggregation and disaggregation at various points in Detnet. Figures are provided in the PDF version of this document.

B.1. Example A-1 JSON Configuration/Operational

This illustrates simple aggregation. Ingress node 1 aggregates App flows 0 and 1 into a service sub-layer of DetNet flow 1. Two ways of illustrating this follow, then the JSON operational data model corresponding to the diagrams follows. This example uses IPv6 address format.

Source 12001:db8::1 Ingress 1 Relay 1 Relay 2 Egress 1 Transit 2 Transit 1 Destination 12001:db8::8 MPLS S- label 101 MPLS F- label 10001 MPLS F- label 10002 MPLS S- label 101 MPLS F- label 10003 MPLS F- label 10004 MPLS S- label 100 MPLS F- label 10000 MPLS S- label 102 MPLS F- label 10005 MPLS S- label 101 MPLS S- label 101 App-0 App-0 DN-1 App-1 App-1 2001:db8::12001:db8::8 DATA 0 DATA 1 R E R E aggregationdisaggregation 2001:db8::12001:db8::8 DATA 0 DATA 1 2001:db8::12001:db8::8 DATA 0 DATA 1 2001:db8::12001:db8::8 DATA 0 DATA 1 2001:db8::12001:db8::8 DATA 0 DATA 1 2001:db8::12001:db8::8 DATA 0 DATA 1 2001:db8::12001:db8::8 DATA 0 DATA 1 2001:db8::12001:db8::8 DATA 0 DATA 1 IP IP
Figure 2: Case A-1 Example JSON Operational/Configuration
app-0 ssl-1 fsl-1 outgoing - service outgoing forwarding sub-layer incoming service sub-layer outgoing interface app-1 outgoing - service Case A - 1 (Ingress 1) incomingapp-flow app svc fwd appincoming - service Case A - 1 (Egress 1) incoming-service outgoing service sub-layer incoming service-identification outgoing app-flow incoming forwarding-identification App to Svc
Figure 3: Case A-1 Example JSON Operational/Configuration 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 200000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "traffic-spec": {
          "interval": 5,
          "max-pkts-per-interval": 10,
          "max-payload-size": 1500,
          "min-payload-size": 100,
          "min-pkts-per-interval": 1
        },
        "member-apps": [
          "app-0",
          "app-1"
        ]
      },
      {
        "name": "pf-2",
        "traffic-requirements": {
          "min-bandwidth": "200000000",
          "max-latency": 100000000,
          "max-latency-variation": 200000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "traffic-spec": {
          "interval": 5,
          "max-pkts-per-interval": 10,
          "max-payload-size": 1500,
          "min-payload-size": 100,
          "min-pkts-per-interval": 1
        },
        "member-services": [
          "ssl-1"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 5,
          "max-pkts-per-interval": 10,
          "max-payload-size": 1500
        },
        "member-fwd-sublayers": [
          "fsl-1"
        ]
      }
    ],
    "app-flows": {
      "app-flow": [
        {
          "name": "app-0",
          "bidir-congruent": false,
          "outgoing-service": "ssl-1",
          "traffic-profile": "pf-1",
          "ingress": {
            "app-flow-status": "ietf-detnet:ready",
            "interface": "eth0",
            "ip-app-flow": {
              "src-ip-prefix": "2001:db8::1/128",
              "dest-ip-prefix": "2001:db8::8/128",
              "dscp": 6
            }
          }
        },
        {
          "name": "app-1",
          "bidir-congruent": false,
          "outgoing-service": "ssl-1",
          "traffic-profile": "pf-1",
          "ingress": {
            "app-flow-status": "ietf-detnet:ready",
            "interface": "eth0",
            "ip-app-flow": {
              "src-ip-prefix": "2001:db8::1/128",
              "dest-ip-prefix": "2001:db8::8/128",
              "dscp": 7
            }
          }
        }
      ]
    },
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-2",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "initiation",
          "incoming": {
            "app-flow": {
              "flow": [
                "app-0",
                "app-1"
              ]
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "100"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-1"
                  ]
                }
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10000"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 4: Example A-1 DetNet JSON configuration

B.2. Example B-1 XML Config: Aggregation using a Forwarding Sub-layer

This illustrates aggrgation in the service sub-layers of DetNet. Flows 1 and 2 are aggregated into a forwarding sub-layer. A diagram illustrating this case is shown and then the corresponding XML operational data follows.

DN-2 Source 1192.0.2.1 Ingress 1 Relay 2Egress 1 Transit 2 Transit 1 Destination 1192.0.2.8 Source 2192.0.2.2 DATA 2 IP 192.0.2.2 192.0.2.9 Destination 2 192.0.2.9 DATA 2 IP 192.0.2.2 192.0.2.9 App- 2 App- 2 MPLSF - label 20000 MPLSS - label 103 MPLSS - label 100 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 IP 192.0.2.1 192.0.2.8 MPLSF - label 20001 MPLSF - label 20002 MPLSS - label 101 IP192.0.2.1 192.0.2.8 DATA 1 MPLSS - label 104 IP192.0.2.2 192.0.2.9 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSF - label 20003 MPLSF - label 20004 MPLSS - label 104 MPLSS - label 101 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSF - label 20005 MPLSS - label 105 MPLSS - label 102 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 IP 192.0.2.1 192.0.2.8 DN-1 / DN-2 DN-2 DN-1 DN-2 DN-1 DN-1 / DN-2 DN-2 DN-1 DN-1 / DN-2 DN-1 DATA 1 DATA 1 App-1 App-1Note: S-label in this diagram includes d-CW. R E R E aggregationdisaggregation Relay 1
Figure 5: Case B-1 Example XML Config: Aggregation using a Forwarding Sub-layer 
<interfaces
  xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces"
  xmlns:ia="urn:ietf:params:xml:ns:yang:iana-if-type">
    <interface>
      <name>eth0</name>
      <type>ia:ethernetCsmacd</type>
      <oper-status>up</oper-status>
      <statistics>
         <discontinuity-time>2020-12-18T23:59:00Z</discontinuity-time>
      </statistics>
    </interface>
    <interface>
      <name>eth1</name>
      <type>ia:ethernetCsmacd</type>
      <oper-status>up</oper-status>
      <statistics>
         <discontinuity-time>2020-12-18T23:59:00Z</discontinuity-time>
      </statistics>
    </interface>
    <interface>
      <name>eth2</name>
      <type>ia:ethernetCsmacd</type>
      <oper-status>up</oper-status>
      <statistics>
         <discontinuity-time>2020-12-18T23:59:00Z</discontinuity-time>
      </statistics>
    </interface>
    <interface>
      <name>eth3</name>
      <type>ia:ethernetCsmacd</type>
      <oper-status>up</oper-status>
      <statistics>
         <discontinuity-time>2020-12-18T23:59:00Z</discontinuity-time>
      </statistics>
    </interface>
    <interface>
      <name>eth4</name>
      <type>ia:ethernetCsmacd</type>
      <oper-status>up</oper-status>
      <statistics>
         <discontinuity-time>2020-12-18T23:59:00Z</discontinuity-time>
      </statistics>
    </interface>
  </interfaces>
<detnet
  xmlns="urn:ietf:params:xml:ns:yang:ietf-detnet">
  <app-flows>
    <app-flow>
      <name>app-1</name>
      <bidir-congruent>false</bidir-congruent>
      <outgoing-service>ssl-1</outgoing-service>
       <traffic-profile>1</traffic-profile>
      <ingress>
        <app-flow-status>ready</app-flow-status>
        <interface>eth0</interface>
        <ip-app-flow>
          <src-ip-prefix>192.0.2.1/32</src-ip-prefix>
          <dest-ip-prefix>192.0.2.8/32</dest-ip-prefix>
          <dscp>6</dscp>
        </ip-app-flow>
      </ingress>
    </app-flow>
    <app-flow>
      <name>app-2</name>
      <bidir-congruent>false</bidir-congruent>
      <outgoing-service>ssl-2</outgoing-service>
       <traffic-profile>1</traffic-profile>
      <ingress>
        <app-flow-status>ready</app-flow-status>
        <interface>eth1</interface>
        <ip-app-flow>
          <src-ip-prefix>192.0.2.2/32</src-ip-prefix>
          <dest-ip-prefix>192.0.2.9/32</dest-ip-prefix>
          <dscp>7</dscp>
        </ip-app-flow>
      </ingress>
    </app-flow>
  </app-flows>
  <traffic-profile>
    <name>1</name>
    <traffic-requirements>
      <min-bandwidth>100000000</min-bandwidth>
      <max-latency>100000000</max-latency>
      <max-latency-variation>200000000</max-latency-variation>
      <max-loss>2</max-loss>
      <max-consecutive-loss-tolerance>5</max-consecutive-loss-tolerance>
      <max-misordering>0</max-misordering>
    </traffic-requirements>
    <member-apps>app-1</member-apps>
    <member-apps>app-2</member-apps>
  </traffic-profile>
  <traffic-profile>
    <name>2</name>
    <traffic-requirements>
      <min-bandwidth>100000000</min-bandwidth>
      <max-latency>100000000</max-latency>
      <max-latency-variation>200000000</max-latency-variation>
      <max-loss>2</max-loss>
      <max-consecutive-loss-tolerance>5</max-consecutive-loss-tolerance>
      <max-misordering>0</max-misordering>
    </traffic-requirements>
    <member-services>ssl-1</member-services>
    <member-services>ssl-2</member-services>
  </traffic-profile>
  <traffic-profile>
    <name>3</name>
    <traffic-spec>
      <interval>5</interval>
      <max-pkts-per-interval>10</max-pkts-per-interval>
      <max-payload-size>1500</max-payload-size>
    </traffic-spec>
    <member-fwd-sublayers>afl-1</member-fwd-sublayers>
  </traffic-profile>
  <service>
    <sub-layer>
      <name>ssl-1</name>
      <service-rank>10</service-rank>
      <traffic-profile>2</traffic-profile>
      <operation>initiation</operation>
      <service-protection>
        <protection>none</protection>
        <sequence-number-length>long-sn</sequence-number-length>
      </service-protection>
     <incoming>
        <app-flow>
          <flow>app-1</flow>
        </app-flow>
      </incoming>
      <outgoing>
        <forwarding-sub-layer>
          <service-outgoing>
            <index>0</index>
            <mpls-label-stack>
              <entry>
                <id>0</id>
                <label>100</label>
              </entry>
            </mpls-label-stack>
            <sub-layer>afl-1</sub-layer>
          </service-outgoing>
         </forwarding-sub-layer>
      </outgoing>
    </sub-layer>
    <sub-layer>
      <name>ssl-2</name>
      <service-rank>10</service-rank>
      <traffic-profile>2</traffic-profile>
      <operation>initiation</operation>
      <service-protection>
        <protection>none</protection>
        <sequence-number-length>long-sn</sequence-number-length>
      </service-protection>
     <incoming>
        <app-flow>
          <flow>app-2</flow>
        </app-flow>
      </incoming>
      <outgoing>
        <forwarding-sub-layer>
          <service-outgoing>
            <index>0</index>
            <mpls-label-stack>
              <entry>
                <id>0</id>
                <label>103</label>
              </entry>
            </mpls-label-stack>
            <sub-layer>afl-1</sub-layer>
          </service-outgoing>
         </forwarding-sub-layer>
      </outgoing>
    </sub-layer>
    </service>
    <forwarding>
    <sub-layer>
      <name>afl-1</name>
      <traffic-profile>3</traffic-profile>
      <operation>impose-and-forward</operation>
      <incoming>
        <service-sub-layer>
          <sub-layer>ssl-1</sub-layer>
          <sub-layer>ssl-2</sub-layer>
        </service-sub-layer>
      </incoming>
      <outgoing>
        <interface>
          <outgoing-interface>eth2</outgoing-interface>
          <mpls-label-stack>
            <entry>
              <id>0</id>
              <label>10000</label>
            </entry>
          </mpls-label-stack>
         </interface>
      </outgoing>
    </sub-layer>
    </forwarding>
</detnet>
Figure 6: Example B-1 DetNet XML configuration

B.3. Example B-2 JSON Service Aggregation Configuration

This illustrates the service sub-layers of DetNet. Flows 1 and 2 are aggregated into a service sub-layer of aggregated DetNet flow 1. A diagram illustrating this case is shown and then the corresponding JSON operational data follows.

Source 1192.0.2.1 Ingress 1192.0.2.2 Relay 1 Relay 2 Egress 1 Transit 2 Transit 1 Destination 1192.0.2.8 Source 2192.0.2.2 DATA 2 IP 192.0.2.2 192.0.2.9 Destination 2 192.0.2.9 DATA 2 IP 192.0.2.2 192.0.2.9 App-2 App-2 DN-2 DN-1 Aggregated DN-1 DN-2 DN-1 MPLSS - label 105 MPLSF - label 20000 MPLSS - label 102 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 IP 192.0.2.1 192.0.2.8 MPLSA-label 1000 MPLSF - label 20001 MPLSF - label 20002 MPLSA-label 1001 MPLSA-label 1001 MPLSS-label 102 IP192.0.2.1 192.0.2.8 DATA1 MPLSS - label 105 IP192.0.2.2 192.0.2.9 DATA 2 MPLSS - label 102 MPLSS - label 105 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 105 MPLSF - label 20003 MPLSF - label 20004 MPLSA-label 1001 MPLSA-label 1001 MPLSS-label 102 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS-label 102 MPLSS-label 105 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 105 MPLSF - label 20005 MPLSS - label 102 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSA-label 1002 IP 192.0.2.1 192.0.2.8 App-1 App-1 DATA 1 DATA 1 R E R ENotes: - S and A labels in this diagram include d-CWs of their own. aggregationdisaggregation
Figure 7: Case B-2 Example JSON Service Aggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 200000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-apps": [
          "app-1",
          "app-2"
        ]
      },
      {
        "name": "2",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 200000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "3",
        "traffic-spec": {
          "interval": 5,
          "max-pkts-per-interval": 10,
          "max-payload-size": 1500
        },
        "member-fwd-sublayers": [
          "afl-1"
        ]
      }
    ],
    "app-flows": {
      "app-flow": [
        {
          "name": "app-1",
          "bidir-congruent": false,
          "outgoing-service": "ssl-1",
          "traffic-profile": "1",
          "ingress": {
            "app-flow-status": "ietf-detnet:ready",
            "interface": "eth0",
            "ip-app-flow": {
              "src-ip-prefix": "192.0.2.1/32",
              "dest-ip-prefix": "192.0.2.8/32",
              "dscp": 6
            }
          }
        },
        {
          "name": "app-2",
          "bidir-congruent": false,
          "outgoing-service": "ssl-2",
          "traffic-profile": "1",
          "ingress": {
            "app-flow-status": "ietf-detnet:ready",
            "interface": "eth0",
            "ip-app-flow": {
              "src-ip-prefix": "192.0.2.2/32",
              "dest-ip-prefix": "192.0.2.9/32",
              "dscp": 7
            }
          }
        }
      ]
    },
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "2",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "initiation",
          "incoming": {
            "app-flow": {
              "flow": [
                "app-1"
              ]
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "aggregation-sub-layer": "asl-1",
              "service-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "102"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "2",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "initiation",
          "incoming": {
            "app-flow": {
              "flow": [
                "app-2"
              ]
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "aggregation-sub-layer": "asl-1",
              "service-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "105"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "asl-1",
          "service-rank": 10,
          "traffic-profile": "2",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "initiation",
          "incoming": {
            "service-aggregation": {
              "sub-layer": [
                "ssl-1",
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "1000"
                      }
                    ]
                  },
                  "sub-layer": [
                    "afl-1"
                  ]
                }
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "afl-1",
          "traffic-profile": "3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20000"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-10-02T19:59:00-04:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-10-02T19:59:00-04:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-10-02T19:59:00-04:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-10-02T19:59:00-04:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-10-02T19:59:00-04:00"
        }
      }
    ]
  }
}
Figure 8: Example B-2 DetNet JSON Service Aggregation

B.4. Example C-1 JSON Relay Aggregation/Disaggregation Configuration

This illustrates the Relay node 1 aggregating the forwarding sub-layers of DetNet flows 1 and 2 into a forwarding sub-layer. A diagram illustrating both aggregation and disaggregation is shown and then the corresponding JSON operational data follows.

Source 1192.0.2.1 Ingress 1 Relay 1Relay 2 Egress 1 Transit 2 Transit 1 Destination 1 DATA 1 MPLS F- label 20000 MPLS F- label 20001 MPLS F- label 20002 MPLS F- label 20003 DATA 1 IP 192.0.2.1 192.0.2.8 IP 192.0.2.1 192.0.2.8 MPLS S- label 100 MPLS F- label 10000 DATA 1 IP 192.0.2.1 192.0.2.8 MPLS S- label 102 MPLS F- label 10005 DATA 1 IP 192.0.2.1 192.0.2.8 Source 2 192.0.2.2 DATA 2 IP 192.0.2.2 192.0.2.9 Destination 2 192.0.2.9 DATA 2 IP 192.0.2.2 192.0.2.9 MPLS S- label 103 DATA 2 IP 192.0.2.2 192.0.2.9 Ingress 2 Egress 2 MPLS F- label 1006 MPLS S- label 105 DATA 2 IP 192.0.2.2 192.0.2.9 App-1 App-2 App-1 App-2 DN-1 DN- 2 DN-1 DN- 2 R E R E MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSF- label 10003 MPLSF- label 10009 MPLSF- label 10004 MPLSF- label 10010 MPLSF- label 10003 MPLSF- label 10009 MPLSF- label 10004 MPLSF- label 10010 MPLS F- label 10011 Note: S-label in this diagram includes d-CW. DN-1 DN-2 DN-1 / DN -2 DN-1 DN-2 aggregationdisaggregation
Figure 9: Case C-1 Example JSON Service Aggregation/Disaggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "afl-1",
          "afl-2"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2",
          "fsl-3",
          "fsl-4",
          "fsl-5",
          "fsl-6"
        ]
      }
    ],
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "replication",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "100"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "101"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-2",
                    "fsl-3"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "replication",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "103"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "104"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-5",
                    "fsl-6"
                  ]
                }
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10000"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "aggregation-sub-layer": "afl-1",
              "forwarding-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "10003"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "fsl-3",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "aggregation-sub-layer": "afl-2",
              "forwarding-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "10004"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "fsl-4",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10006"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "fsl-5",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "aggregation-sub-layer": "afl-1",
              "forwarding-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "10009"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "fsl-6",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "aggregation-sub-layer": "afl-2",
              "forwarding-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "10010"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "afl-1",
          "traffic-profile": "pf-2",
          "operation": "impose-and-forward",
          "incoming": {
            "forwarding-aggregation": {
              "sub-layer": [
                "fsl-2",
                "fsl-5"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20000"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "afl-2",
          "traffic-profile": "pf-2",
          "operation": "impose-and-forward",
          "incoming": {
            "forwarding-aggregation": {
              "sub-layer": [
                "fsl-3",
                "fsl-6"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20001"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 10: Example C-1 DetNet JSON Relay Service Aggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "afl-1",
          "afl-2"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2",
          "fsl-3",
          "fsl-4",
          "fsl-5",
          "fsl-6"
        ]
      }
    ],
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "elimination",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "101"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "102"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-3"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "elimination",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "104"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "105"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-6"
                  ]
                }
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "afl-1",
          "traffic-profile": "pf-2",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20002"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-disaggregation": {
              "sub-layer": [
                "fsl-1",
                "fsl-4"
              ]
            }
          }
        },
        {
          "name": "afl-2",
          "traffic-profile": "pf-2",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20003"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-disaggregation": {
              "sub-layer": [
                "fsl-2",
                "fsl-5"
              ]
            }
          }
        },
        {
          "name": "fsl-1",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10003"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10004"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-3",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10005"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "fsl-4",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10009"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "fsl-5",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10010"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "fsl-6",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10011"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 11: Example C-1 DetNet JSON Relay Service Disaggregation

B.5. Example C-2 JSON Relay Aggregation Service Sub-Layer

This illustrates the Relay node 1 aggregating the service sub-layers of DetNet flows 1 and 2 into a forwarding sub-layer A diagram illustrating both aggregation and disaggregation is shown and then the corresponding JSON operational data follows.

Source 1192.0.2.1 Ingress 1 Relay 1Relay 2 Egress 1 Transit 2 Transit 1 Destination 1192.0.2.8 DATA 1 MPLS F- label 20000 MPLS F- label 20001 MPLS F- label 20002 MPLS F- label 20003 DATA1 IP 192.0.2.1 192.0.2.8 IP 192.0.2.1 192.0.2.8 MPLS S- label 100 MPLS F- label 10000 DATA 1 IP 192.0.2.1 192.0.2.8 MPLSS - label 102 MPLS F- label 10005 DATA 1 IP 192.0.2.1 192.0.2.8 Source 2 192.0.2.2 DATA 2 IP 192.0.2.2 192.0.2.9 Destination 2 192.0.2.9 DATA 2 IP 192.0.2.2 192.0.2.9 MPLS S- label 103 DATA 2 IP 192.0.2.2 192.0.2.9 Ingress 2 Egress 2 MPLS F- label 10006 MPLS S- label 105 DATA 2 IP 192.0.2.2 192.0.2.9 App-1 App-2 App-1 App-2 DN-1 DN- 2 DN-1 DN- 2 R E R E MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLS F- label 10011 Note: S-label in this diagram includes d-CW. DN-1 DN-2 DN-1 / DN -2 DN-1 DN-2 aggregationdisaggregation
Figure 12: Case C-2 Example JSON Service Aggregation/Disaggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "afl-1",
          "afl-2"
        ]
      }
    ],
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "replication",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "100"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "101"
                      }
                    ]
                  },
                  "sub-layer": [
                    "afl-1",
                    "afl-2"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "replication",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "103"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "104"
                      }
                    ]
                  },
                  "sub-layer": [
                    "afl-1",
                    "afl-2"
                  ]
                }
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-2",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10000"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-2",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10006"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "afl-1",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1",
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20000"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "afl-2",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1",
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20001"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 13: Example C-2 DetNet JSON Relay Aggregation Service Sub-Layer 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "afl-1",
          "afl-2"
        ]
      }
    ],
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "elimination",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "101"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "102"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-1"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "elimination",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "104"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "105"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-2"
                  ]
                }
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "afl-1",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20002"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1",
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "afl-2",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20003"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1",
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "fsl-1",
          "traffic-profile": "pf-2",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10005"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-2",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10011"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 14: Example C-2 DetNet JSON Relay Disaggregation Service Sub-Layer

B.6. Example C-3 JSON Relay Service Sub-Layer Aggregation/Disaggregation

This illustrates the Relay node 1 aggregating the service sub-layers of DetNet flows 1 and 2 into a service sub-layer of Aggregated DetNet flow 1. It also illustrates the Relay node 2 disaggregating the aggregated DetNet flow 1 into the DetNet flows 1 and 2 service sub-layers. A diagram illustrating both aggregation and disaggregation is shown and then the corresponding JSON operational data follows.

MPLSS - label 104 Source 1 192.0.2.1 Ingress 1 Relay 1Relay 2 Egress 1 Transit 2 Transit 1 Destination 1192.0.2.8 DATA 1 MPLS F- label 20000 MPLS F- label 20001 MPLS F- label 20002 MPLS F- label 20003 DATA 1 IP 192.0.2.1 192.0.2.8 IP 192.0.2.1 192.0.2.8 MPLS S- label 100 MPLS F- label 10000 DATA 1 IP 192.0.2.1 192.0.2.8 MPLS S- label 102 MPLS F- label 10005 DATA 1 IP 192.0.2.1 192.0.2.8 Source 2 192.0.2.2 DATA 2 IP 192.0.2.2 192.0.2.9 Destination 2 192.0.2.9 DATA 2 IP 192.0.2.2 192.0.2.9 MPLS A- label 1000 MPLS S- label 103 DATA 2 IP 192.0.2.2 192.0.2.9 MPLS A- label 1000 MPLS A- label 1000 MPLS A- label 1000 Ingress 2 Egress 2 MPLS F- label 10006 MPLS S- label 105 MPLS F- label 10011 DATA 2 IP 192.0.2.2 192.0.2.9 App-1 App-2 App-1 App-2 DN-1 DN- 2 DN-1 DN- 2 R E R E MPLSS - label 101 IP192.0.2.1 192.0.2.8 DATA 1 MPLSS - label 104 IP192.0.2.2 192.0.2.9 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 Note: S and A labels in this diagram include d-CWs of their own. DN-1 DN-2 Aggregated DN-1 DN-1 DN-2 aggregationdisaggregation
Figure 15: Case C-3 Example JSON Service Aggregation/Disaggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-requirements": {
          "min-bandwidth": "200000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "asl-1"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2"
        ]
      },
      {
        "name": "pf-4",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-3",
          "fsl-4"
        ]
      }
    ],
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "100"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "aggregation-sub-layer": "asl-1",
              "service-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "101"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "103"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "aggregation-sub-layer": "asl-1",
              "service-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "104"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "asl-1",
          "service-rank": 10,
          "traffic-profile": "pf-2",
          "service-protection": {
            "protection": "replication",
            "sequence-number-length": "long-sn"
          },
          "operation": "initiation",
          "incoming": {
            "service-aggregation": {
              "sub-layer": [
                "ssl-1",
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "1000"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-3",
                    "fsl-4"
                  ]
                }
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10000"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10006"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "fsl-3",
          "traffic-profile": "pf-4",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20000"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "fsl-4",
          "traffic-profile": "pf-4",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20001"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 16: Example C-3 DetNet JSON Relay Service Sub-Layer Aggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-requirements": {
          "min-bandwidth": "200000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "asl-1"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-3",
          "fsl-4"
        ]
      },
      {
        "name": "pf-4",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2"
        ]
      }
    ],
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "101"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "102"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-3"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "104"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "105"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-4"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "asl-1",
          "service-rank": 10,
          "traffic-profile": "pf-2",
          "service-protection": {
            "protection": "elimination",
            "sequence-number-length": "long-sn"
          },
          "operation": "termination",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "1000"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-disaggregation": {
              "sub-layer": [
                "ssl-1",
                "ssl-2"
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-4",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20002"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-4",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20003"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-3",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10005"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "fsl-4",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10011"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 17: Example C-3 DetNet JSON Relay Service Sub-Layer Disaggregation

B.7. Example C-4 JSON Relay Service Sub-Layer Aggregation/Disaggregation

This illustrates the Relay node 1 aggregating the forwarding sub-layers of DetNet flow 1 and 2 into a service sub-layer of Aggregated DetNet flow 1. This also illustrates the Relay node 2 disaggregating the service sub-layer of Aggregated DetNet flow 1 to forwarding sub-layers of DetNet flow 1 and 2. A diagram illustrating both aggregation and disaggregation is shown and then the corresponding JSON operational data follows.

18Source 1 192.0.2.1 Ingress 1 Relay 1 Relay 2 Egress 1 Transit 2 Transit Destination 1192.0.2.8 DATA 1 MPLS F- label 20000 MPLS F- label 20001 MPLS F- label 20002 MPLS F- label 20003 DATA 1 IP 192.0.2.1 192.0.2.8 IP 192.0.2.1 192.0.2.8 MPLS S- label 100 MPLS F- label 10000 DATA 1 IP 192.0.2.1 192.0.2.8 MPLS S- label 102 MPLS F- label 10005 DATA 1 IP 192.0.2.1 192.0.2.8 Source 2 192.0.2.2 DATA 2 IP 192.0.2.2 192.0.2.9 Destination 2 192.0.2.9 DATA 2 IP 192.0.2.2 192.0.2.9 MPLS A- label 1000 MPLS S- label 103 DATA 2 IP 192.0.2.2 192.0.2.9 MPLS A- label 1000 MPLS A- label 1000 MPLS A- label 1000 Ingress 2192.0.2.23 Egress 2192.0.2.78 MPLS F- label 10006 MPLS S- label 105 MPLS F- label 10011 DATA 2 IP 192.0.2.2 192.0.2.9 App-1 App-2 App-1 App-2 DN-1 DN- 2 DN-1 DN- 2 R E R E MPLSS - label 101 IP192.0.2.1 192.0.2.8 DATA 1 MPLSS - label 104 IP192.0.2.2 192.0.2.9 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSS - label 101 MPLSS - label 104 IP192.0.2.1 192.0.2.8 IP192.0.2.2 192.0.2.9 DATA 1 DATA 2 MPLSF- label 20004 MPLSF- label 20005 MPLSF- label 20004 MPLSF- label 20005 MPLSF- label 20004 MPLSF- label 20005 MPLSF- label 20004 MPLSF- label 20005 Note: S and A labels in this diagram include d-CWs of their own. DN-1 DN-2 Aggregated DN-1 DN-1 DN-2 aggregationdisaggregation
Figure 18: Case C-4 Example JSON Service Aggregation/Disaggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-requirements": {
          "min-bandwidth": "200000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "asl-1"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2",
          "fsl-3",
          "fsl-4"
        ]
      },
      {
        "name": "pf-4",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-5",
          "fsl-6"
        ]
      }
    ],
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "100"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "101"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-3"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "103"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "104"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-4"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "asl-1",
          "service-rank": 10,
          "traffic-profile": "pf-2",
          "service-protection": {
            "protection": "replication",
            "sequence-number-length": "long-sn"
          },
          "operation": "initiation",
          "incoming": {
            "forwarding-aggregation": {
              "sub-layer": [
                "fsl-3",
                "fsl-4"
              ]
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "1000"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-5",
                    "fsl-6"
                  ]
                }
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10000"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10006"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "fsl-3",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          },
          "outgoing": {
            "service-aggregation": {
              "aggregation-sub-layer": "asl-1",
              "optional-forwarding-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "20004"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "fsl-4",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "service-aggregation": {
              "aggregation-sub-layer": "asl-1",
              "optional-forwarding-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "20005"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "fsl-5",
          "traffic-profile": "pf-4",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20000"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "fsl-6",
          "traffic-profile": "pf-4",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20001"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 19: Example C-4 DetNet JSON Relay Service Sub-Layer Aggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-requirements": {
          "min-bandwidth": "100000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "ssl-1",
          "ssl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-requirements": {
          "min-bandwidth": "200000000",
          "max-latency": 100000000,
          "max-latency-variation": 100000000,
          "max-loss": 2,
          "max-consecutive-loss-tolerance": 5,
          "max-misordering": 0
        },
        "member-services": [
          "asl-1"
        ]
      },
      {
        "name": "pf-3",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-3",
          "fsl-4",
          "fsl-5",
          "fsl-6"
        ]
      },
      {
        "name": "pf-4",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2"
        ]
      }
    ],
    "service": {
      "sub-layer": [
        {
          "name": "ssl-1",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "101"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "102"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-5"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "ssl-2",
          "service-rank": 10,
          "traffic-profile": "pf-1",
          "service-protection": {
            "protection": "none",
            "sequence-number-length": "long-sn"
          },
          "operation": "relay",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "104"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "service-outgoing": [
                {
                  "index": 0,
                  "mpls-label-stack": {
                    "entry": [
                      {
                        "id": 0,
                        "label": "105"
                      }
                    ]
                  },
                  "sub-layer": [
                    "fsl-6"
                  ]
                }
              ]
            }
          }
        },
        {
          "name": "asl-1",
          "service-rank": 10,
          "traffic-profile": "pf-2",
          "service-protection": {
            "protection": "elimination",
            "sequence-number-length": "long-sn"
          },
          "operation": "termination",
          "incoming": {
            "service-id": {
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "1000"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-disaggregation": {
              "sub-layer": [
                "fsl-3",
                "fsl-4"
              ]
            }
          }
        }
      ]
    },
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-4",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20002"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-4",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20003"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "asl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-3",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20004"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          }
        },
        {
          "name": "fsl-4",
          "traffic-profile": "pf-3",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20005"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          }
        },
        {
          "name": "fsl-5",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-1"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10005"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "fsl-6",
          "traffic-profile": "pf-3",
          "operation": "impose-and-forward",
          "incoming": {
            "service-sub-layer": {
              "sub-layer": [
                "ssl-2"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10011"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 20: Example C-4 DetNet JSON Relay Service Sub-Layer Disaggregation

B.8. Example D-1 JSON Transit Forwarding Sub-Layer Aggregation/Disaggregation

This illustrates the Transit node 1 aggregating the forwarding sub-layers of DetNet flow 1 and 2 into a forwarding sub-layer. This also illustrates a Transit node 4 disaggregating a forwarding sub-layer into DetNet flow 1 and 2 forwarding sub-layers.

Ingress 1192.0.2.2 Transit 1 Transit 4 Egress 1 Transit 3 Transit 2 MPLS S- label 100 MPLS F- label 10000 DATA 1 IP 192.0.2.1 192.0.2.9 MPLS S- label 100 MPLS F- label 10003 DATA 1 IP 192.0.2.1 192.0.2.9 Ingress 2 Egress 2 Source 1192.0.2.1 DATA 1 IP 192.0.2.1 192.0.2.9 Source 2 192.0.2.2 Destination 2192.0.2.9 Destination 1192.0.2.8 DATA 1 IP 192.0.2.1 192.0.2.9 App-1 DN - 1 App-1 DN-1 App-2 App-2 DN-2 DN-2 DN-1 / DN-2 DN-1 / DN-2 MPLS S- label 101 MPLS F- label 10004 DATA 2 IP 192.0.2.2 192.0.2.8 DATA 2 IP 192.0.2.2 192.0.2.8 MPLS F- label 20000 MPLS F- label 20001 MPLSS - label 100 MPLSS - label 101 IP192.0.2.1 192.0.2.9 IP192.0.2.2 192.0.2.8 DATA 1 DATA 2 MPLSS - label 100 MPLSS - label 101 IP192.0.2.1 192.0.2.9 IP192.0.2.2 192.0.2.8 DATA 1 DATA 2 MPLS F-label10002 MPLS F-label10006 MPLS F-label10002 MPLS F-label10006 MPLS S- label 101 MPLS F- label 10007 DATA 2 IP 192.0.2.2 192.0.2.8 DATA 2 IP 192.0.2.2 192.0.2.8 aggregationdisaggregation
Figure 21: Case D-1 Example Service Aggregation/Disaggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "afl-1"
        ]
      }
    ],
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-1",
          "operation": "pop-impose-and-forward",
          "incoming": {
            "forwarding-id": {
              "interface": "eth0",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10000"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "aggregation-sub-layer": "afl-1",
              "forwarding-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "10002"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-1",
          "operation": "pop-impose-and-forward",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10004"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-sub-layer": {
              "aggregation-sub-layer": "afl-1",
              "forwarding-label": {
                "mpls-label-stack": {
                  "entry": [
                    {
                      "id": 0,
                      "label": "10006"
                    }
                  ]
                }
              }
            }
          }
        },
        {
          "name": "afl-1",
          "traffic-profile": "pf-2",
          "operation": "impose-and-forward",
          "incoming": {
            "forwarding-aggregation": {
              "sub-layer": [
                "fsl-1",
                "fsl-2"
              ]
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20000"
                  }
                ]
              }
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 22: Example D-1 DetNet JSON Relay Service Sub-Layer Aggregation 
{
  "ietf-detnet:detnet": {
    "traffic-profile": [
      {
        "name": "pf-1",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 1,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "fsl-1",
          "fsl-2"
        ]
      },
      {
        "name": "pf-2",
        "traffic-spec": {
          "interval": 125,
          "max-pkts-per-interval": 2,
          "max-payload-size": 1518
        },
        "member-fwd-sublayers": [
          "afl-1"
        ]
      }
    ],
    "forwarding": {
      "sub-layer": [
        {
          "name": "fsl-1",
          "traffic-profile": "pf-1",
          "operation": "swap-and-forward",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10002"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth3",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10003"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "fsl-2",
          "traffic-profile": "pf-1",
          "operation": "swap-and-forward",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10006"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "interface": {
              "outgoing-interface": "eth2",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "10007"
                  }
                ]
              }
            }
          }
        },
        {
          "name": "afl-1",
          "traffic-profile": "pf-2",
          "operation": "pop-and-lookup",
          "incoming": {
            "forwarding-id": {
              "interface": "eth1",
              "mpls-label-stack": {
                "entry": [
                  {
                    "id": 0,
                    "label": "20001"
                  }
                ]
              }
            }
          },
          "outgoing": {
            "forwarding-disaggregation": {
              "sub-layer": [
                "fsl-1",
                "fsl-2"
              ]
            }
          }
        }
      ]
    }
  },
  "ietf-interfaces:interfaces": {
    "interface": [
      {
        "name": "eth0",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth1",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth2",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth3",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      },
      {
        "name": "eth4",
        "type": "iana-if-type:ethernetCsmacd",
        "oper-status": "up",
        "statistics": {
          "discontinuity-time": "2020-12-18T18:59:00-05:00"
        }
      }
    ]
  }
}
Figure 23: Example D-1 DetNet JSON Relay Service Sub-Layer Disaggregation

Authors' Addresses

Xuesong Geng
Huawei Technologies
Yeoncheol Ryoo
ETRI
Don Fedyk
LabN Consulting, L.L.C.
Reshad Rahman
Individual
Zhenqiang Li
China Mobile