Internet-Draft OTN Tunnel YANG Model October 2023
Zheng, et al. Expires 19 April 2024 [Page]
Workgroup:
CCAMP Working Group
Internet-Draft:
draft-ietf-ccamp-otn-tunnel-model-19
Published:
Intended Status:
Standards Track
Expires:
Authors:
H. Zheng
Huawei Technologies
I. Busi
Huawei Technologies
S. Belotti
Nokia
V. Lopez
Nokia
Y. Xu
CAICT

OTN Tunnel YANG Model

Abstract

This document describes the YANG data model for tunnels in OTN TE networks. The model can be used to do the configuration in order to establish the tunnel in OTN network. This work is independent with the control plane protocols.

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/.

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This Internet-Draft will expire on 19 April 2024.

▲

Table of Contents

1. Introduction

OTN transport networks, specified in [ITU-Tg709], can carry various types of client signals. In many cases, the client signal is carried over an OTN tunnel across connected domains in a multi-domain network.

This document provides YANG model for creating OTN tunnel. The model augments the generic TE Tunnel model specified in [I-D.ietf-teas-yang-te].

The YANG module ietf-otn-tunnel defined in this document conforms to the Network Management Datastore Architecture (NMDA) defined in [RFC8342].

1.1. Terminology and Notations

Refer to [I-D.ietf-ccamp-otn-topo-yang] for the OTN specific terms terms used in this document.

The following terms are defined in [RFC7950] and are not redefined here:

The following terms are defined in [RFC6241] and are not redefined here:

The terminology for describing YANG data models is found in [RFC7950].

1.2. Tree Diagram

A simplified graphical representation of the data model is used in Section 3 of this this document. The meaning of the symbols in these diagrams is defined in [RFC8340].

1.3. Prefix in Data Node Names

In this document, names of data nodes and other data model objects are prefixed using the standard prefix associated with the corresponding YANG imported modules, as shown in the following table.


    +-------------+-------------------------+------------------------+
    | Prefix      | YANG module             | Reference              |
    +-------------+-------------------------+------------------------+
    | l1-types    | ietf-layer1-types       | RFC YYYY               |
    | otntnl      | ietf-otn-tunnel         | RFC XXXX               |
    | te          | ietf-te                 | RFC ZZZZ               |
    +-------------+-------------------------+------------------------+
          Table 1: Prefixes and Corresponding YANG Modules

RFC Editor Note: Please replace XXXX with the number assigned to the RFC once this draft becomes an RFC. Please replace YYYY with the RFC numbers assigned to [I-D.ietf-ccamp-layer1-types]. Please replace ZZZZ with the RFC numbers assigned to [I-D.ietf-teas-yang-te].

2. OTN Tunnel Model Description

2.1. Overview of OTN Tunnel Model

This document aims to describe the data model for OTN tunnel. The OTN tunnel model is using TE tunnel [I-D.ietf-teas-yang-te] as a basic model and augments it with OTN-specific parameters, including the bandwidth information and label information. Figure 1 shows the augmentation relationship.


                        +----------------+
           TE generic   |     ietf-te    |
                        +----------------+
                                 ^
                                 |
                                 | Augments
                                 |
                        +--------+--------+
           OTN          | ietf-otn-tunnel |
                        +-----------------+
       Figure 1 - Relationship between OTN and TE tunnel models

It is also worth noting that the OTN tunnel provisioning is usually based on the OTN topology. Therefore the OTN tunnel model is usually used together with OTN topology model specified in [I-D.ietf-ccamp-otn-topo-yang]. The OTN tunnel model also imports a few type modules, including ietf-layer1-types, ietf-te-types and ietf-inet-types. The OTN-specific attributes in [RFC7139], including the Tributary Slot (TS) and Tributary Port Number (TPN), can be used to represent the bandwidth and label information. These attributes have been specified in [I-D.ietf-ccamp-layer1-types] and used in this document for augmentation of the generic TE tunnel model.

More scenarios and model applications can be found in [I-D.ietf-ccamp-transport-nbi-app-statement] and [I-D.ietf-teas-actn-yang].

2.2. Bandwidth Augmentation

The model augments all the occurrences of the te-bandwidth container with the OTN technology specific attributes using the otn-link-bandwidth and otn-path-bandwidth groupings defined in [I-D.ietf-ccamp-layer1-types].

2.3. Label Augmentation

The model augments all the occurrences of the label-restriction list with OTN technology specific attributes using the otn-label-range-info grouping defined in [I-D.ietf-ccamp-layer1-types].

Moreover, the model augments all the occurrences of the te-label container with the OTN technology specific attributes using the otn-label-start-end, otn-label-hop and otn-label-step groupings defined in [I-D.ietf-ccamp-layer1-types].

3. OTN Tunnel YANG Tree 


module: ietf-otn-tunnel

  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:te-bandwidth/te:technology:
    +--:(otn)
       +--rw otn
          +--rw odu-type?                     identityref
          +--rw (oduflex-type)?
             +--:(generic)
             |  +--rw nominal-bit-rate        union
             +--:(cbr)
             |  +--rw client-type             identityref
             +--:(gfp-n-k)
             |  +--rw gfp-n                   uint8
             |  +--rw gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--rw flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--rw flexe-aware-n           uint16
             +--:(packet)
                +--rw opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:te-bandwidth/te:technology:
    +--:(otn)
       +--rw otn
          +--rw odu-type?                     identityref
          +--rw (oduflex-type)?
             +--:(generic)
             |  +--rw nominal-bit-rate        union
             +--:(cbr)
             |  +--rw client-type             identityref
             +--:(gfp-n-k)
             |  +--rw gfp-n                   uint8
             |  +--rw gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--rw flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--rw flexe-aware-n           uint16
             +--:(packet)
                +--rw opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:te-bandwidth/te:technology:
    +--:(otn)
       +--rw otn
          +--rw odu-type?                     identityref
          +--rw (oduflex-type)?
             +--:(generic)
             |  +--rw nominal-bit-rate        union
             +--:(cbr)
             |  +--rw client-type             identityref
             +--:(gfp-n-k)
             |  +--rw gfp-n                   uint8
             |  +--rw gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--rw flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--rw flexe-aware-n           uint16
             +--:(packet)
                +--rw opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:computed-paths-properties
            /te:computed-path-properties/te:path-properties
            /te:te-bandwidth/te:technology:
    +--:(otn)
       +--ro otn
          +--ro odu-type?                     identityref
          +--ro (oduflex-type)?
             +--:(generic)
             |  +--ro nominal-bit-rate        union
             +--:(cbr)
             |  +--ro client-type             identityref
             +--:(gfp-n-k)
             |  +--ro gfp-n                   uint8
             |  +--ro gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--ro flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--ro flexe-aware-n           uint16
             +--:(packet)
                +--ro opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path/te:te-bandwidth
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw odu-type?                     identityref
          +--rw (oduflex-type)?
             +--:(generic)
             |  +--rw nominal-bit-rate        union
             +--:(cbr)
             |  +--rw client-type             identityref
             +--:(gfp-n-k)
             |  +--rw gfp-n                   uint8
             |  +--rw gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--rw flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--rw flexe-aware-n           uint16
             +--:(packet)
                +--rw opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:computed-paths-properties/te:computed-path-properties
            /te:path-properties/te:te-bandwidth/te:technology:
    +--:(otn)
       +--ro otn
          +--ro odu-type?                     identityref
          +--ro (oduflex-type)?
             +--:(generic)
             |  +--ro nominal-bit-rate        union
             +--:(cbr)
             |  +--ro client-type             identityref
             +--:(gfp-n-k)
             |  +--ro gfp-n                   uint8
             |  +--ro gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--ro flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--ro flexe-aware-n           uint16
             +--:(packet)
                +--ro opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:te-bandwidth/te:technology:
    +--:(otn)
       +--rw otn
          +--rw odu-type?                     identityref
          +--rw (oduflex-type)?
             +--:(generic)
             |  +--rw nominal-bit-rate        union
             +--:(cbr)
             |  +--rw client-type             identityref
             +--:(gfp-n-k)
             |  +--rw gfp-n                   uint8
             |  +--rw gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--rw flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--rw flexe-aware-n           uint16
             +--:(packet)
                +--rw opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:computed-paths-properties
            /te:computed-path-properties/te:path-properties
            /te:te-bandwidth/te:technology:
    +--:(otn)
       +--ro otn
          +--ro odu-type?                     identityref
          +--ro (oduflex-type)?
             +--:(generic)
             |  +--ro nominal-bit-rate        union
             +--:(cbr)
             |  +--ro client-type             identityref
             +--:(gfp-n-k)
             |  +--ro gfp-n                   uint8
             |  +--ro gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--ro flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--ro flexe-aware-n           uint16
             +--:(packet)
                +--ro opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:te-bandwidth/te:technology:
    +--:(otn)
       +--rw otn
          +--rw odu-type?                     identityref
          +--rw (oduflex-type)?
             +--:(generic)
             |  +--rw nominal-bit-rate        union
             +--:(cbr)
             |  +--rw client-type             identityref
             +--:(gfp-n-k)
             |  +--rw gfp-n                   uint8
             |  +--rw gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--rw flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--rw flexe-aware-n           uint16
             +--:(packet)
                +--rw opuflex-payload-rate    union
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:computed-paths-properties
            /te:computed-path-properties/te:path-properties
            /te:te-bandwidth/te:technology:
    +--:(otn)
       +--ro otn
          +--ro odu-type?                     identityref
          +--ro (oduflex-type)?
             +--:(generic)
             |  +--ro nominal-bit-rate        union
             +--:(cbr)
             |  +--ro client-type             identityref
             +--:(gfp-n-k)
             |  +--ro gfp-n                   uint8
             |  +--ro gfp-k?                  gfp-k
             +--:(flexe-client)
             |  +--ro flexe-client            flexe-client-rate
             +--:(flexe-aware)
             |  +--ro flexe-aware-n           uint16
             +--:(packet)
                +--ro opuflex-payload-rate    union
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:path-in-segment
            /te:label-restrictions/te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:path-out-segment
            /te:label-restrictions/te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:path-in-segment/te:label-restrictions
            /te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:path-in-segment/te:label-restrictions
            /te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:path-out-segment/te:label-restrictions
            /te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:path-in-segment
            /te:label-restrictions/te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:path-in-segment
            /te:label-restrictions/te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction:
    +--rw otn-label-range
       +--rw range-type?      otn-label-range-type
       +--rw tsg?             identityref
       +--rw odu-type-list*   identityref
       +--rw priority?        uint8
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint
            /te:explicit-route-objects-always
            /te:route-object-exclude-always/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint
            /te:explicit-route-objects-always
            /te:route-object-include-exclude/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:path-in-segment
            /te:label-restrictions/te:label-restriction
            /te:label-start/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:path-in-segment
            /te:label-restrictions/te:label-restriction/te:label-end
            /te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:path-in-segment
            /te:label-restrictions/te:label-restriction/te:label-step
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:path-out-segment
            /te:label-restrictions/te:label-restriction
            /te:label-start/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:path-out-segment
            /te:label-restrictions/te:label-restriction/te:label-end
            /te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:globals/te:named-path-constraints
            /te:named-path-constraint/te:path-out-segment
            /te:label-restrictions/te:label-restriction/te:label-step
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:optimizations/te:algorithm/te:metric
            /te:optimization-metric/te:explicit-route-exclude-objects
            /te:route-object-exclude-object/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:optimizations/te:algorithm/te:metric
            /te:optimization-metric/te:explicit-route-include-objects
            /te:route-object-include-object/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:explicit-route-objects-always
            /te:route-object-exclude-always/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:explicit-route-objects-always
            /te:route-object-include-exclude/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:path-in-segment/te:label-restrictions
            /te:label-restriction/te:label-start/te:te-label
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:path-in-segment/te:label-restrictions
            /te:label-restriction/te:label-end/te:te-label
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:path-in-segment/te:label-restrictions
            /te:label-restriction/te:label-step/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction
            /te:label-start/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction/te:label-end
            /te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction/te:label-step
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:computed-paths-properties
            /te:computed-path-properties/te:path-properties
            /te:path-route-objects/te:path-route-object/te:type
            /te:label/te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--ro otn
          +--ro tpn?       otn-tpn
          +--ro tsg?       identityref
          +--ro ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path/te:optimizations
            /te:algorithm/te:metric/te:optimization-metric
            /te:explicit-route-exclude-objects
            /te:route-object-exclude-object/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path/te:optimizations
            /te:algorithm/te:metric/te:optimization-metric
            /te:explicit-route-include-objects
            /te:route-object-include-object/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:explicit-route-objects-always
            /te:route-object-exclude-always/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:explicit-route-objects-always
            /te:route-object-include-exclude/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:path-in-segment/te:label-restrictions
            /te:label-restriction/te:label-start/te:te-label
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:path-in-segment/te:label-restrictions
            /te:label-restriction/te:label-end/te:te-label
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:path-in-segment/te:label-restrictions
            /te:label-restriction/te:label-step/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:path-out-segment/te:label-restrictions
            /te:label-restriction/te:label-start/te:te-label
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:path-out-segment/te:label-restrictions
            /te:label-restriction/te:label-end/te:te-label
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:path-out-segment/te:label-restrictions
            /te:label-restriction/te:label-step/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:primary-paths
            /te:primary-path/te:primary-reverse-path
            /te:computed-paths-properties/te:computed-path-properties
            /te:path-properties/te:path-route-objects
            /te:path-route-object/te:type/te:label/te:label-hop
            /te:te-label/te:technology:
    +--:(otn)
       +--ro otn
          +--ro tpn?       otn-tpn
          +--ro tsg?       identityref
          +--ro ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:optimizations/te:algorithm
            /te:metric/te:optimization-metric
            /te:explicit-route-exclude-objects
            /te:route-object-exclude-object/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:optimizations/te:algorithm
            /te:metric/te:optimization-metric
            /te:explicit-route-include-objects
            /te:route-object-include-object/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:explicit-route-objects-always
            /te:route-object-exclude-always/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:explicit-route-objects-always
            /te:route-object-include-exclude/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:path-in-segment
            /te:label-restrictions/te:label-restriction
            /te:label-start/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:path-in-segment
            /te:label-restrictions/te:label-restriction/te:label-end
            /te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:path-in-segment
            /te:label-restrictions/te:label-restriction/te:label-step
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction
            /te:label-start/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction/te:label-end
            /te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction/te:label-step
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-paths
            /te:secondary-path/te:computed-paths-properties
            /te:computed-path-properties/te:path-properties
            /te:path-route-objects/te:path-route-object/te:type
            /te:label/te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--ro otn
          +--ro tpn?       otn-tpn
          +--ro tsg?       identityref
          +--ro ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:optimizations/te:algorithm
            /te:metric/te:optimization-metric
            /te:explicit-route-exclude-objects
            /te:route-object-exclude-object/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:optimizations/te:algorithm
            /te:metric/te:optimization-metric
            /te:explicit-route-include-objects
            /te:route-object-include-object/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path
            /te:explicit-route-objects-always
            /te:route-object-exclude-always/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path
            /te:explicit-route-objects-always
            /te:route-object-include-exclude/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw tpn?       otn-tpn
          +--rw tsg?       identityref
          +--rw ts-list?   string
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:path-in-segment
            /te:label-restrictions/te:label-restriction
            /te:label-start/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:path-in-segment
            /te:label-restrictions/te:label-restriction/te:label-end
            /te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:path-in-segment
            /te:label-restrictions/te:label-restriction/te:label-step
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction
            /te:label-start/te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction/te:label-end
            /te:te-label/te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:path-out-segment
            /te:label-restrictions/te:label-restriction/te:label-step
            /te:technology:
    +--:(otn)
       +--rw otn
          +--rw (range-type)?
             +--:(trib-port)
             |  +--rw tpn?   otn-tpn
             +--:(trib-slot)
                +--rw ts?    otn-ts
  augment /te:te/te:tunnels/te:tunnel/te:secondary-reverse-paths
            /te:secondary-reverse-path/te:computed-paths-properties
            /te:computed-path-properties/te:path-properties
            /te:path-route-objects/te:path-route-object/te:type
            /te:label/te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--ro otn
          +--ro tpn?       otn-tpn
          +--ro tsg?       identityref
          +--ro ts-list?   string
  augment /te:te/te:lsps/te:lsp/te:lsp-record-route-information
            /te:lsp-record-route-information/te:type/te:label
            /te:label-hop/te:te-label/te:technology:
    +--:(otn)
       +--ro otn
          +--ro tpn?       otn-tpn
          +--ro tsg?       identityref
          +--ro ts-list?   string

4. OTN Tunnel YANG Code 

<CODE BEGINS>file "ietf-otn-tunnel@2023-10-12.yang"
module ietf-otn-tunnel {
  yang-version 1.1;
  namespace "urn:ietf:params:xml:ns:yang:ietf-otn-tunnel";
  prefix "otn-tnl";

  import ietf-te {
    prefix "te";
    revision-date "2021-02-20";
    reference
      "I-D.ietf-teas-yang-te-19: A YANG Data Model for Traffic
      Engineering Tunnels and Interfaces. ";
  }

  import ietf-layer1-types {
    prefix "l1-types";
    reference
      "I-D.ietf-ccamp-layer1-types:
      A YANG Data Model for Layer 1 Types. ";
  }

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

     Editor:   Haomian Zheng
               <mailto:zhenghaomian@huawei.com>

     Editor:   Italo Busi
               <mailto:italo.busi@huawei.com>

     Editor:   Sergio Belotti
               <mailto:sergio.belotti@nokia.com>

     Editor:   Victor Lopez
               <mailto:victor.lopez@nokia.com>

     Editor:   Yunbin Xu
               <mailto:xuyunbin@caict.ac.cn>";

  description
    "This module defines a model for OTN Tunnel Services.

    The model fully conforms to the Network Management
    Datastore Architecture (NMDA).

    Copyright (c) 2023 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 Revised 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; see
    the RFC itself for full legal notices.";

  revision "2023-10-12" {
    description
      "Initial version";
    reference
      "RFC XXXX: OTN Tunnel YANG Model";
    // RFC Ed.: replace XXXX with actual RFC number, update date
    // information and remove this note
  }

 /*
  * Data nodes
  */

  /*
   * Augment TE bandwidth
   */

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the named path constraint.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the tunnel.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the primary path.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:computed-paths-properties/"
        + "te:computed-path-properties/te:path-properties/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of primary path's computed path
      properties.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the primary reverse path.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:computed-paths-properties/"
        + "te:computed-path-properties/te:path-properties/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the primary reverse path's computed
      path properties.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the secondary path.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:computed-paths-properties/"
        + "te:computed-path-properties/te:path-properties/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the secondary path's computed path
      properties.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/"
        + "te:secondary-reverse-path/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the secondary reverse path.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/"
        + "te:secondary-reverse-path/"
        + "te:computed-paths-properties/"
        + "te:computed-path-properties/te:path-properties/"
        + "te:te-bandwidth/te:technology" {
    description
      "Augment TE bandwidth of the secondary reverse path's computed
      path properties.";
    case otn {
      uses l1-types:otn-path-bandwidth;
    }
  }

  /*
   * Augment TE label range information
   */

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:path-in-segment/"
        + "te:label-restrictions/te:label-restriction" {
    description
      "Augment TE label range information for the ingress segment
      of the named path constraint.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:path-out-segment/"
        + "te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the egress segment
      of the named path constraint.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the ingress segment
      of the primay path.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the egress segment
      of the primay path.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the ingress segment
      of the primay reverse path.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the egress segment
      of the primay reverse path.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the ingress segment
      of the secondary path.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the egress segment
      of the secondary path.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the ingress segment
      of the secondary reverse path.";
    uses l1-types:otn-label-range-info;
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction" {
    description
      "Augment TE label range information for the egress segment
      of the secondary reverse path.";
    uses l1-types:otn-label-range-info;
  }

  /*
   * Augment TE label.
   */

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-exclude-always/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects always
      excluded by the path computation with the named path
      constraint.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-include-exclude/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects included
      or excluded by the path computation with the named path
      constraint.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:path-in-segment/"
        + "te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the ingress segment
      of the named path constraint.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:path-in-segment/"
        + "te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the ingress segment
      of the named path constraint.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:path-in-segment/"
        + "te:label-restrictions/te:label-restriction/"
        + "te:label-step/te:technology" {
    description
      "Augment TE label range step for the ingress segment
      of the named path constraint.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:path-out-segment/"
        + "te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the egress segment
      of the named path constraint.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:path-out-segment/"
        + "te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the egress segment
      of the named path constraint.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:globals/te:named-path-constraints/"
        + "te:named-path-constraint/te:path-out-segment/"
        + "te:label-restrictions/te:label-restriction/"
        + "te:label-step/te:technology" {
    description
      "Augment TE label range step for the egress segment
      of the named path constraint.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-exclude-objects/"
        + "te:route-object-exclude-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the optimization of the explicit
      route objects excluded by the path computation of the primary
      path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-include-objects/"
        + "te:route-object-include-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the optimization of the explicit
      route objects included by the path computation of the primary
      path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-exclude-always/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects always
      excluded by the path computation of the primary path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-include-exclude/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects included
      or excluded by the path computation of the primary path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the ingress segment
      of the primay path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the ingress segment
      of the primay path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-step/te:technology" {
    description
      "Augment TE label range step for the ingress segment
      of the primay path.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the egress segment
      of the primay path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the egress segment
      of the primay path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-step/te:technology" {
    description
      "Augment TE label range end for the egress segment
      of the primay path.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:computed-paths-properties/"
        + "te:computed-path-properties/te:path-properties/"
        + "te:path-route-objects/te:path-route-object/"
        + "te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the route object of the computed
      primary path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-exclude-objects/"
        + "te:route-object-exclude-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the optimization of the explicit
      route objects excluded by the path computation of the primary
      reverse path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-include-objects/"
        + "te:route-object-include-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the optimization of the explicit
      route objects included by the path computation of the primary
      reverse path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-exclude-always/"
        + "te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects always
      excluded by the path computation of the primary reverse
      path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-include-exclude/"
        + "te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects included
      or excluded by the path computation of the primary reverse
      path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the ingress segment
      of the primay reverse path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the ingress segment
      of the primay reverse path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-step/te:technology" {
    description
      "Augment TE label range step for the ingress segment
      of the primay reverse path.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the egress segment
      of the primay reverse path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the egress segment
      of the primay reverse path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-step/te:technology" {
    description
      "Augment TE label range step for the egress segment
      of the primay reverse path.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:primary-paths/te:primary-path/"
        + "te:primary-reverse-path/"
        + "te:computed-paths-properties/te:computed-path-properties/"
        + "te:path-properties/te:path-route-objects/"
        + "te:path-route-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the route object of the computed
      primary reverse path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-exclude-objects/"
        + "te:route-object-exclude-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the optimization of the explicit
      route objects excluded by the path computation of the
      secondary path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-include-objects/"
        + "te:route-object-include-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the optimization of the explicit
      route objects included by the path computation of the
      secondary path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-exclude-always/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects always
      excluded by the path computation of the secondary path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-include-exclude/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects included
      or excluded by the path computation of the secondary path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the ingress segment
      of the secondary path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the ingress segment
      of the secondary path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }
  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-step/te:technology" {
    description
      "Augment TE label range step for the ingress segment
      of the secondary path.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the egress segment
      of the secondary path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the egress segment
      of the secondary path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-step/te:technology" {
    description
      "Augment TE label range step for the egress segment
      of the secondary path.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-paths/te:secondary-path/"
        + "te:computed-paths-properties/"
        + "te:computed-path-properties/"
        + "te:path-properties/te:path-route-objects/"
        + "te:path-route-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the route object of the computed
      secondary path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-exclude-objects/"
        + "te:route-object-exclude-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the optimization of the explicit
      route objects excluded by the path computation of the
      secondary reverse path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:optimizations/te:algorithm/te:metric/"
        + "te:optimization-metric/te:explicit-route-include-objects/"
        + "te:route-object-include-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the optimization of the explicit
      route objects included by the path computation of the
      secondary reverse path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-exclude-always/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects always
      excluded by the path computation of the secondary reverse
      path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:explicit-route-objects-always/"
        + "te:route-object-include-exclude/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the explicit route objects included
      or excluded by the path computation of the secondary reverse
      path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the ingress segment
      of the secondary reverse path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the ingress segment
      of the secondary reverse path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:path-in-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-step/te:technology" {
    description
      "Augment TE label range step for the ingress segment
      of the secondary reverse path.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-start/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range start for the egress segment
      of the secondary reverse path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-end/"
        + "te:te-label/te:technology" {
    description
      "Augment TE label range end for the egress segment
      of the secondary reverse path.";
    case otn {
      uses l1-types:otn-label-start-end;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:path-out-segment/te:label-restrictions/"
        + "te:label-restriction/te:label-step/te:technology" {
    description
      "Augment TE label range step for the egress segment
      of the secondary reverse path.";
    case otn {
      uses l1-types:otn-label-step;
    }
  }

  augment "/te:te/te:tunnels/te:tunnel/"
        + "te:secondary-reverse-paths/te:secondary-reverse-path/"
        + "te:computed-paths-properties/"
        + "te:computed-path-properties/"
        + "te:path-properties/te:path-route-objects/"
        + "te:path-route-object/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the route object of the computed
      secondary reverse path.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }

  augment "/te:te/te:lsps/"
        + "te:lsp/te:lsp-record-route-information/"
        + "te:lsp-record-route-information/te:type/te:label/"
        + "te:label-hop/te:te-label/te:technology" {
    description
      "Augment TE label hop for the record route of the LSP.";
    case otn {
      uses l1-types:otn-label-hop;
    }
  }
}


<CODE ENDS>

5. Security Considerations

The YANG module specified in this document defines 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 NETCONF access control model [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 this YANG module 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 have a negative effect on network operations. Considerations in Section 10 of [I-D.ietf-teas-yang-te]are also applicable to their subtrees in the module defined in this document.

Some of the readable data nodes in this YANG module may be considered sensitive or vulnerable in some network environments. It is thus important to control read access (e.g., via get, get-config, or notification) to these data nodes. Considerations in Section 10 of [I-D.ietf-teas-yang-te]are also applicable to their subtrees in the module defined in this document.

6. IANA Considerations

It is proposed that IANA should assign new URIs from the "IETF XML Registry" [RFC3688] as follows:


      URI: urn:ietf:params:xml:ns:yang:ietf-otn-tunnel
      Registrant Contact: The IESG
      XML: N/A; the requested URI is an XML namespace.

This document registers following YANG modules in the YANG Module Names registry [RFC7950].


   name:         ietf-otn-tunnel
   namespace:    urn:ietf:params:xml:ns:yang:ietf-otn-tunnel
   prefix:       otn-tnl
   reference:    RFC XXXX

RFC Editor Note: Please replace XXXX with the number assigned to the RFC once this draft becomes an RFC.

7. Acknowledgements

TBD.

8. Contributors

Aihua Guo Futurewei Email: aihuaguo.ietf@gmail.com

Anurag Sharma Google Email: ansha@google.com

Rajan Rao Infinera Email: rrao@infinera.com

Yunbo Li China Mobile Email: liyunbo@chinamobile.com

Dieter Beller Nokia Email: dieter.beller@nokia.com

Yanlei Zheng China Unicom Email: zhengyanlei@chinaunicom.cn

Xian Zhang Huawei Technologies Email: zhang.xian@huawei.com

Lei Wang China Mobile Email: wangleiyj@chinamobile.com

Oscar Gonzalez de Dios Telefonica Email: oscar.gonzalezdedios@telefonica.com

9. References

9.1. Normative References

[I-D.ietf-ccamp-layer1-types]
Zheng, H. and I. Busi, "A YANG Data Model for Layer 1 Types", Work in Progress, Internet-Draft, draft-ietf-ccamp-layer1-types-16, , <https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-layer1-types-16>.
[I-D.ietf-ccamp-otn-topo-yang]
Zheng, H., Busi, I., Liu, X., Belotti, S., and O. G. de Dios, "A YANG Data Model for Optical Transport Network Topology", Work in Progress, Internet-Draft, draft-ietf-ccamp-otn-topo-yang-17, , <https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-otn-topo-yang-17>.
[I-D.ietf-teas-yang-te]
Saad, T., Gandhi, R., Liu, X., Beeram, V. P., and I. Bryskin, "A YANG Data Model for Traffic Engineering Tunnels, Label Switched Paths and Interfaces", Work in Progress, Internet-Draft, draft-ietf-teas-yang-te-34, , <https://datatracker.ietf.org/doc/html/draft-ietf-teas-yang-te-34>.
[ITU-Tg709]
International Telecommunication Union, "Interfaces for the optical transport network", ITU-T G.709, .
[RFC3688]
Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, DOI 10.17487/RFC3688, , <https://www.rfc-editor.org/info/rfc3688>.
[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>.
[RFC7139]
Zhang, F., Ed., Zhang, G., Belotti, S., Ceccarelli, D., and K. Pithewan, "GMPLS Signaling Extensions for Control of Evolving G.709 Optical Transport Networks", RFC 7139, DOI 10.17487/RFC7139, , <https://www.rfc-editor.org/info/rfc7139>.
[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>.
[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>.
[RFC8342]
Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K., and R. Wilton, "Network Management Datastore Architecture (NMDA)", RFC 8342, DOI 10.17487/RFC8342, , <https://www.rfc-editor.org/info/rfc8342>.
[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>.

9.2. Informative References

[I-D.ietf-ccamp-transport-nbi-app-statement]
Busi, I., King, D., Zheng, H., and Y. Xu, "Transport Northbound Interface Applicability Statement", Work in Progress, Internet-Draft, draft-ietf-ccamp-transport-nbi-app-statement-17, , <https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-transport-nbi-app-statement-17>.
[I-D.ietf-teas-actn-yang]
Lee, Y., Zheng, H., Ceccarelli, D., Yoon, B. Y., and S. Belotti, "Applicability of YANG models for Abstraction and Control of Traffic Engineered Networks", Work in Progress, Internet-Draft, draft-ietf-teas-actn-yang-11, , <https://datatracker.ietf.org/doc/html/draft-ietf-teas-actn-yang-11>.
[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>.

Authors' Addresses

Haomian Zheng
Huawei Technologies
H1, Huawei Xiliu Beipo Village, Songshan Lake
Dongguan
Guangdong, 523808
China
Italo Busi
Huawei Technologies
HUAWEI TECHNOLOGIES ITALIA Srl Centro Direzionale Milano 2
20090 Milan Milan
Italy
Sergio Belotti
Nokia
Victor Lopez
Nokia
Yunbin Xu
CAICT