TOC 
Internet Engineering Task ForceU. Herberg
Internet-DraftLIX, Ecole Polytechnique
Intended status: Standards TrackR. Cole
Expires: May 14, 2011US Army CERDEC
 I. Chakeres
 CenGen
 November 10, 2010


Definition of Managed Objects for the Neighborhood Discovery Protocol
draft-ietf-manet-nhdp-mib-05

Abstract

This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes objects for configuring aspects of the Neighborhood Discovery Protocol (NHDP) process on a router. The NHDP MIB also reports state and performance information and notifications. This additional state and performance information is useful to management stations troubleshooting neighbor discovery problems.

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 http://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 May 14, 2011.

Copyright Notice

Copyright (c) 2010 IETF Trust and the persons identified as the document authors. All rights reserved.

This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.



Table of Contents

1.  Introduction
2.  The Internet-Standard Management Framework
3.  Conventions
4.  Overview
    4.1.  Terms
5.  Structure of the MIB Module
    5.1.  Notifications
    5.2.  The Configuration Group
    5.3.  The State Group
    5.4.  The Performance Group
    5.5.  Relationship to Other MIB Modules
        5.5.1.  Relationship to the SNMPv2-MIB
        5.5.2.  Relationship to the OLSRv2-MIB
        5.5.3.  Relationship to the REPORT-MIB
        5.5.4.  MIB modules required for IMPORTS
    5.6.  Definitions
    5.7.  Security Considerations
    5.8.  IANA Considerations
    5.9.  Contributors
6.  References
    6.1.  Normative References
    6.2.  Informative References
Appendix A.  Change Log
Appendix B. 




 TOC 

1.  Introduction

This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it describes objects for configuring aspects of the Neighborhood Discovery Protocol (NHDP) [NHDP] (Clausen, T., Dearlove, C., and J. Dean, “The MANET Neighborhood Discovery Protocol (NHDP),” October 2009.) process on a router. The NHDP MIB also reports state and performance information and notifications. This additional state and performance information is useful to management stations troubleshooting neighbor discovery problems.



 TOC 

2.  The Internet-Standard Management Framework

For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410] (Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” December 2002.).

Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Structure of Management Information Version 2 (SMIv2),” April 1999.), STD 58, RFC 2579 [RFC2579] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Textual Conventions for SMIv2,” April 1999.) and STD 58, RFC 2580 [RFC2580] (McCloghrie, K., Perkins, D., and J. Schoenwaelder, “Conformance Statements for SMIv2,” April 1999.).



 TOC 

3.  Conventions

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119] (Bradner, S., “Key words for use in RFCs to Indicate Requirement Levels,” March 1997.).



 TOC 

4.  Overview

The NHDP protocol allows a router in a Mobile Ad-Hoc Network (MANET) to discover and track topological information of routers up to two hops away by virtue of exchanging HELLO messages. This information is useful for routers running various routing and multicast flooding protocols developed within the IETF MANET Working Group.



 TOC 

4.1.  Terms

The following definitions apply throughout this document:



 TOC 

5.  Structure of the MIB Module

This section presents the structure of the NHDP MIB module. The MIB is arranged into the following structure:



 TOC 

5.1.  Notifications

The Notifications subtree contains the list of notifications supported within the NHDP-MIB and describes their intended purpose or utility. The following notifications are specified:



 TOC 

5.2.  The Configuration Group

The NHDP device is configured with a set of controls. The authoritative list of configuration controls within the NHDP-MIB are found within the MIB module itself. Generally, an attempt was made in developing the NHDP-MIB module to support all configuration objects defined within the NHDP protocol definition [NHDP] (Clausen, T., Dearlove, C., and J. Dean, “The MANET Neighborhood Discovery Protocol (NHDP),” October 2009.). For all of the configuration parameters, the same constraints and default values of these parameters as defined in [NHDP] (Clausen, T., Dearlove, C., and J. Dean, “The MANET Neighborhood Discovery Protocol (NHDP),” October 2009.) are followed.



 TOC 

5.3.  The State Group

The State Group reports current state information, including neighbor tables. The NHDP-MIB State Group tables were designed to contain the complete set of state information defined within the information bases within the NHDP protocol [NHDP] (Clausen, T., Dearlove, C., and J. Dean, “The MANET Neighborhood Discovery Protocol (NHDP),” October 2009.).

Two constructs, i.e., TEXTUAL CONVENTIONs, are defined in support of the tables in the State Group. These are the NeighborIfIndex and NeighborRouterId. These are locally (to the NHDP device) defined, unique identifiers. They are used to define indexes to the appropriate State Group tables and to correlate table entries to interface addresses, interfaces and routers within the NHDP domain. The NeighborIfIndex is a unique identifier of discovered NHDP interfaces on all routers within the NHDP domain. The NeighborRouterId is a unique identifier of discovered NHDP routers within the NHDP domain.



 TOC 

5.4.  The Performance Group

The Performance Group reports values relevant to system performance. This section lists objects for NHDP performance monitoring, some of which explicitly appear in the NHDP-MIB and others which are obtainable through a combination of base objects from this MIB and reports available through the REPORT-MIB (Cole, R., Macker, J., and A. Morton, “Definition of Managed Objects for Performance Reporting,” March 2010.) [REPORT]. Throughout this section those objects will be pointed out that are intended as base objects which are explicitly defined within this MIB and those objects which are derived through a combination of the NHDP-MIB base objects and capabilities afforded by the REPORT-MIB.

Unstable neighbors or 2-hop neighbors and frequent changes of sets can have a negative influence on the performance of NHDP. The following objects allow management applications to acquire information related to the stability and performance of NHDP:

The following objects return statistics related to HELLO messages:

The following objects inspect the frequency of all Neighbor Set changes:

The next objects examine the uptime of a given neighbor:

The following objects examine the stability of a neighbor. A neighbor is said to be unstable if it "flaps" frequently between several links. It is said to be stable if the set of Link Tuples that correspond to the given neighbor is stationary.

The following objects inspect the stability of a given 2-hop neighbor:

The next objects examine the uptime of a given 2-hop neighbor:



 TOC 

5.5.  Relationship to Other MIB Modules

This section specifies the relationship of the MIB modules contained in this document to other standards, particularly to standards containing other MIB modules. Definitions imported from other MIB modules and other MIB modules that SHOULD be implemented in conjunction with the MIB module contained within this document are identified in this section.



 TOC 

5.5.1.  Relationship to the SNMPv2-MIB

The 'system' group in the SNMPv2-MIB [RFC3418] (Presuhn, R., “Management Information Base (MIB) for the Simple Network Management Protocol (SNMP),” December 2002.) is defined as being mandatory for all systems, and the objects apply to the entity as a whole. The 'system' group provides identification of the management entity and certain other system-wide data. The NHDP-MIB does not duplicate those objects.



 TOC 

5.5.2.  Relationship to the OLSRv2-MIB

The OLSRv2 [OLSRv2] (Clausen, T., Dearlove, C., and P. Philippe, “The Optimized Link State Routing Protocol version 2,” September 2009.) routing protocol relies upon the NHDP protocol for neighbor reachability information. In order to troubleshoot, fault isolate, and manage the OLSRv2 protocol through the OLSRv2-MIB [OLSRv2] (Clausen, T., Dearlove, C., and P. Philippe, “The Optimized Link State Routing Protocol version 2,” September 2009.), it was necessary to align the State Group tables of these two MIBs. This is accomplished through the definition of two TEXTUAL-CONVENTIONS, i.e. the NeighborInterfaceId and the NeighborRouterId. These object type are used to develop indexes into common NHDP-MIB and OLSRv2-MIB State Group tables. These objects are locally significant but should be locally common to the NHDP-MIB and OLSRv2-MIBs implemented on a common networked device. This will allow for improved cross referencing of information across the two MIBs.



 TOC 

5.5.3.  Relationship to the REPORT-MIB

This document describes many useful Performance Management metrics for the management of NHDP network devices. However, not all of these metrics are explicitly defined solely within the context of this NHDP-MIB. Some of these metrics are obtained through joint interaction between this MIB and the REPORT-MIB [REPORT] (Cole, R., Macker, J., and A. Morton, “Definition of Managed Objects for Performance Reporting,” March 2010.). This NHDP-MIB defines the minimum necessary objects (often of type COUNTER) which form the underlying basis for more sophisticated Performance Management reporting available in conjunction with the REPORT-MIB. Note however, that the implementation of the NHDP-MIB is independent of any implementations of the REPORT-MIB. See the discussion of the performance metrics for NHDP management in the Performance Group section of this document.



 TOC 

5.5.4.  MIB modules required for IMPORTS

The following NHDP-MIB module IMPORTS objects from SNMPv2-SMI [RFC2578] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Structure of Management Information Version 2 (SMIv2),” April 1999.), SNMPv2-TC [RFC2579] (McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Textual Conventions for SMIv2,” April 1999.), SNMPv2-CONF [RFC2580] (McCloghrie, K., Perkins, D., and J. Schoenwaelder, “Conformance Statements for SMIv2,” April 1999.), IF-MIB [RFC2863] (McCloghrie, K. and F. Kastenholz, “The Interfaces Group MIB,” June 2000.), INET-ADDRESS-MIB [RFC4001] (Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, “Textual Conventions for Internet Network Addresses,” February 2005.), and SMIng [RFC3781] (Strauss, F. and J. Schoenwaelder, “Next Generation Structure of Management Information (SMIng) Mappings to the Simple Network Management Protocol (SNMP),” May 2004.).



 TOC 

5.6.  Definitions

NHDP-MIB DEFINITIONS ::= BEGIN

IMPORTS

    MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
    Counter32, Integer32, Unsigned32, mib-2, TimeTicks
                 FROM SNMPv2-SMI  --[RFC2578]

    TEXTUAL-CONVENTION, TruthValue, RowStatus
                 FROM SNMPv2-TC  --[RFC2579]

    MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
                 FROM SNMPv2-CONF  --[STD58]

    InetAddressType, InetAddress,
    InetAddressPrefixLength
                 FROM INET-ADDRESS-MIB  --[RFC4001]

    InterfaceIndexOrZero
                 FROM IF-MIB  --[RFC2863]
    ;

nhdpMIB MODULE-IDENTITY
       LAST-UPDATED "201011081000Z" -- November 08,2010
       ORGANIZATION "IETF MANET working group"
       CONTACT-INFO
       "WG E-Mail: manet@ietf.org

        WG Chairs: ian.chakeres@gmail.com
                   jmacker@nrl.navy.mil


        Editors:   Ulrich Herberg
                   Ecole Polytechnique
                   LIX
                   91128 Palaiseau Cedex
                   France
                   ulrich@herberg.name
                   http://www.herberg.name/

                   Robert G. Cole
                   US Army CERDEC
                   Space and Terrestrial Communications
                   328 Hopkins Road
                   Bldg 245, Room 16
                   Aberdeen Proving Ground, MD 21005
                   USA
                   +1 410 278-6779
                   robert.g.cole@us.army.mil
                   http://www.cs.jhu.edu/~rgcole/

                   Ian D Chakeres
                   CenGen
                   9250 Bendix Road North
                   Columbia, Maryland  21045
                   USA
                   ian.chakeres@gmail.com
                   http://www.ianchak.com/"

       DESCRIPTION
           "This NHDP MIB module is applicable to devices
            implementing the Neighborhood Discovery Protocol
            defined in [RFC XXXX].

            Copyright (C) The IETF Trust (2009). This version
            of this MIB module is part of RFC XXXX; see the RFC
            itself for full legal notices."

       -- revision
       REVISION    "201011081000Z"   -- November 08, 2010
       DESCRIPTION
         "The eight version of this MIB module,
          published as draft-ietf-manet-nhdp-mib-05.txt.
          This is TBD."
       REVISION    "201006301000Z"   -- June 30, 2010
       DESCRIPTION
         "The seventh version of this MIB module,
          published as draft-ietf-manet-nhdp-mib-04.txt.
          Cleaned up and condensed the textual material
          in the earlier sections of this draft.  Check
          consistency with NHDP draft, i.e.,
          draft-ietf-manet-nhdp-12.txt."
       REVISION    "201003081000Z"   -- March 08, 2010
       DESCRIPTION
         "The sixth version of this MIB module,
          published as draft-ietf-manet-nhdp-mib-03.txt.
          Added the local nhdpIfIndex to the
          nhdpIibLinkSetTable."
       REVISION    "200911091000Z"   -- November 09, 2009
       DESCRIPTION
         "The fifth version of this MIB module,
          published as draft-ietf-manet-nhdp-mib-02.txt.
          Cleaned up a few things and updated to newest
          revision of NHDP draft."
       REVISION    "200910211000Z"   -- October 21, 2009
       DESCRIPTION
         "The fourth version of this MIB module,
          published as draft-ietf-manet-nhdp-mib-01.txt.
          Added objects pertaining to the performance
          group."
       REVISION    "200905031500Z"   -- May 3, 2009
       DESCRIPTION
         "The third version of this MIB module,
          published as draft-ietf-manet-nhdp-mib-00.txt.
          No major revisions to this draft.  Mainly rev'd
          as a new working group document.  But also cleaned
          syntax errors, typos and other issues discovered
          with 'smilint'."
       REVISION    "200902151500Z"   -- February 15, 2009
       DESCRIPTION
         "The second version of this MIB module,
          published as draft-cole-manet-nhdp-mib-01.txt.  Major
          update adding objects for configuration and state."
       REVISION    "200804251500Z"   -- April 25, 2008
       DESCRIPTION
         "The original version of this MIB module,
          published as draft-cole-manet-nhdp-mib-00.txt."
       -- RFC-Editor assigns XXXX
       ::= { mib-2 998 }   -- to be assigned by IANA

--
-- Top-Level Components of this MIB
--
nhdpNotifications OBJECT IDENTIFIER ::= { nhdpMIB 0 }
nhdpObjects       OBJECT IDENTIFIER ::= { nhdpMIB 1 }
nhdpConformance   OBJECT IDENTIFIER ::= { nhdpMIB 2 }


--
-- Textual Conventions
--

NeighborIfIndex ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "d"
    STATUS       current
    DESCRIPTION
        "A locally arbitrary unique identifier associated with an
         NHDP neighbor interface.

         All objects of type NeighborIfIndex are assigned by the agent
         out of a common number space. In other words, NeighborIfIndex
         values assigned to entries in one table must not overlap with
         NeighborIfIndex values assigned to entries in another
         table.

         The NeighborIfIndex defines a discovered interface of a 1-hop
         or 2-hop neighbor of the local router.  The agent identifies
         a unique neighbor interface through the receipt of an
         address list advertised through an NHDP HELLO message.

         The value for each discovered neighbor interface must remain
         constant at least from one re-initialization of the entity's
         network management system to the next re-initialization,
         except that if an application is deleted and re-created.

         The specific value is meaningful only within a given SNMP
         entity. An NeighborIfIndex value must not be re-used until
         the next agent restart."
    SYNTAX       Unsigned32 (1..2147483647)


NeighborRouterId ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "d"
    STATUS       current
    DESCRIPTION
        "A locally arbitrary unique identifier associated with an
         NHDP discovered peer router.

         All objects of type NeighborRouterId are assigned by the
         agent out of a common number space.

         The NeighborRouterId defines a discovered NHDP peer of
         the local router.  The agent identifies a
         unique neighbor through the receipt of address
         lists advertised through an NHDP HELLO messages.

         The value for each discovered neighbor ID must remain
         constant at least from one re-initialization of the entity's
         network management system to the next re-initialization,
         except that if an application is deleted and re-created.

         The specific value is meaningful only within a given SNMP
         entity. An NeighborRouterId value must not be re-used until
         the next agent restart."
    SYNTAX       Unsigned32 (1..2147483647)



--
-- nhdpObjects
--

--    Configuration Objects Group
--    State Objects Group
--    Performance Objects Group



--
-- nhdpConfigurationObjGrp
--

-- Contains the NHDP objects which configure specific options
-- which determine the overall performance and operation of the
-- discovery protocol.

nhdpConfigurationObjGrp OBJECT IDENTIFIER ::= { nhdpObjects 1 }

   nhdpInterfaceTable  OBJECT-TYPE
      SYNTAX      SEQUENCE OF NhdpInterfaceEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The NHDP Interface Table describes the
          configuration of the interfaces of this NHDP device.
          The ifIndex is from the interfaces group
          defined in the Interfaces Group MIB.

          The object 'nhdpIfStatus' provides the functionality
          expected by the NHDP in the Local Interface Base (LIB)
          Local Interface Set Table.  Hence, the Local Interface
          Set Table will not be defined below.

          The objects in this table are persistent and when
          written the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "RFC 2863 - The Interfaces Group MIB, McCloghrie,
          K., and F. Kastenholtz, June 2000."
   ::= { nhdpConfigurationObjGrp 1 }

   nhdpInterfaceEntry OBJECT-TYPE
      SYNTAX      NhdpInterfaceEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The NHDP interface entry describes one NHDP
          local interface configuration as indexed by
          its ifIndex as defined in the Standard MIB II
          Interface Table (RFC2863)."
      INDEX { nhdpIfIndex }
   ::= { nhdpInterfaceTable 1 }

   NhdpInterfaceEntry ::=
      SEQUENCE {
         nhdpIfIndex
            InterfaceIndexOrZero,
         nhdpIfStatus
            TruthValue,
         nhdpHelloInterval
            Unsigned32,
         nhdpHelloMinInterval
            Unsigned32,
         nhdpRefreshInterval
            Unsigned32,
         nhdpLHoldTime
            Unsigned32,
         nhdpHHoldTime
            Unsigned32,
         nhdpHystAcceptQuality
            Integer32,
         nhdpHystRejectQuality
            Integer32,
         nhdpInitialQuality
            Integer32,
         nhdpInitialPending
            TruthValue,
         nhdpHpMaxJitter
            Unsigned32,
         nhdpHtMaxJitter
            Unsigned32,
         nhdpIfRowStatus
            RowStatus
         }

   nhdpIfIndex  OBJECT-TYPE
      SYNTAX      InterfaceIndexOrZero
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The ifIndex for this interface."
      ::= { nhdpInterfaceEntry 1 }

   nhdpIfStatus  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhpdIfStatus indicates whether this interface is
          a MANET interface. A value of true(1) indicates
          that the interface is a MANET interface.  A value of
          false(2) indicates that the interface is not a MANET
          interface. This corresponds to the I_manet parameter
          in the Local Interface Set, which is omitted in this MIB
          due to the redundancy with the nhdpInterfaceTable."
      DEFVAL { 2 }
   ::= { nhdpInterfaceEntry 2 }


   --
   -- Interface Parameters - Message Intervals
   --
   nhdpHelloInterval  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhpdHelloInterval is the maximum time
          between the transmission of two successive
          HELLO messages on this MANET interface.

          The following constraints apply to this
          parameter:
             'nhpdHelloInterval ge 0'
             'nhpdHelloInterval ge nhdpHelloMinInterval'"
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 2000 }
   ::= { nhdpInterfaceEntry 3 }


   nhdpHelloMinInterval  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhpdHelloMinInterval is the minimum interval
          between transmission of two successive HELLO
          messages, on this MANET interface.

          The following constraints apply to this
          parameter:
             'nhdpHelloMinInterval gt 0'"
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 500 }
   ::= { nhdpInterfaceEntry 4 }


   nhdpRefreshInterval  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhpdRefreshInterval is the maximum interval
          between advertisements, in a HELLO message on this
          MANET interface, of each 1-hop neighbor network
          address and its status.

          The following constraint applies to this
          parameter:
             'nhdpRefreshInterval ge nhdpHelloInterval'"
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 2000 }
   ::= { nhdpInterfaceEntry 5 }

   --
   -- Interface Parameters - Information Validity times
   --
   nhdpLHoldTime  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpLHoldTime is used to define the time
          for which a recently used and replaced
          originator address is used to recognize
          the router's own messages.

          The following constraint applies to this
          parameter:
              'nhdpLHoldTime ge 0'"
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 6000 }
   ::= { nhdpInterfaceEntry 6 }

   nhdpHHoldTime  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpHHoldTime is used to define the time
          for which a recently used and replaced
          originator address is used to recognize
          the router's own messages.

          The following constraint applies to this
          parameter:
              'nhdpHHoldTime ge 0'"
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 6000 }
   ::= { nhdpInterfaceEntry 7 }

   --
   -- Interface Parameters - Link Quality
   -- (is optional and settings define operation)
   --
   nhdpHystAcceptQuality  OBJECT-TYPE
      SYNTAX      Integer32 (0..255)
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpHystAcceptQuality is the
          link quality threshold at or above
          which a link becomes usable,
          if it was not already so.

          The following constraint applies to this
          parameter:
              '0 le nhdpHystRejectQuality
                 le nhdpHystAcceptQuality le 255'"
      REFERENCE
         "The NHDP draft.
          Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 255 }
   ::= { nhdpInterfaceEntry 8 }

   nhdpHystRejectQuality  OBJECT-TYPE
      SYNTAX      Integer32 (0..255)
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpHystRejectQuality is the
          link quality threshold below which
          a link becomes unusable, if it
          was not already so.

          The following constraint applies to this
          parameter:
              '0 le nhdpHystRejectQuality
                 le nhdpHystAcceptQuality le 255'"
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 0 }
   ::= { nhdpInterfaceEntry 9 }

   nhdpInitialQuality  OBJECT-TYPE
      SYNTAX      Integer32 (0..255)
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpInitialQuality is the
          initial quality of a newly
          identified link.

          The following constraint applies to this
          parameter:
              '0 le nhdpInitialQuality le 255'"
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 255 }
   ::= { nhdpInterfaceEntry 10 }

   nhdpInitialPending  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpInitialPending is defined as
          follows:

          If true, then a newly identified link
          is considered pending, and is not
          usable until the link quality has
          reached or exceeded the
          nhdpHystAccept threshold."
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 2 }
   ::= { nhdpInterfaceEntry 11 }

   --
   -- Interface Parameters - Jitter
   --
   nhdpHpMaxJitter  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpHpMaxJitter represents the
          value of MAXJITTER used in [4] for
          periodically generated HELLO messages
          on this MANET interface."
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 500 }
   ::= { nhdpInterfaceEntry 12 }


   nhdpHtMaxJitter  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpHtMaxJitter represents the
          value of MAXJITTER used in [4] for
          externally triggered HELLO messages
          on this MANET interface."
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 500 }
   ::= { nhdpInterfaceEntry 13 }

   nhdpIfRowStatus  OBJECT-TYPE
      SYNTAX      RowStatus
      MAX-ACCESS  read-create
      STATUS      current
      DESCRIPTION
         "This object permits management of the table
         by facilitating actions such as row creation,
         construction, and destruction. The value of
         this object has no effect on whether other
         objects in this conceptual row can be
         modified."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpInterfaceEntry 14 }


   --
   -- Router Parameters - Information Validity Time
   --
   nhdpNHoldTime  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpHHoldTime is used as the period
          during which former 1-hop neighbor
          addresses are advertised as lost in
          HELLO messages, allowing recipients of
          these HELLO messages to accelerate removal
          of information from their 2-Hop Sets.
          N_HOLD_TIME can be set to zero if
          accelerated information removal is not
          required.

          The following constraint applies to this
          parameter:
              'nhdpHHoldTime ge 0'

          This object is persistent and when written
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 6000 }
   ::= { nhdpConfigurationObjGrp 2 }


   nhdpIHoldTime  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The nhdpIHoldTime is the period
          for which a recently used local
          interface address is recorded.

          The following constraint applies to this
          parameter:
              'nhdpIHoldTime ge 0'

          This object is persistent and when written
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "The NHDP draft.
          See Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 6000 }
   ::= { nhdpConfigurationObjGrp 3 }




--
-- nhdpStateObjGrp
--

-- Contains information describing the current state of the NHDP
-- process.

nhdpStateObjGrp    OBJECT IDENTIFIER ::= { nhdpObjects 2 }

   -- Before building the NHDP Information Bases, we define
   -- two new constructs for indexing into the following
   -- tables and indexing into other tables in other MIBs.
   -- The NeighborIfIndex defines a unique (to the local router)
   -- index referencing a discovered interface on another
   -- router within the NHDP MANET. The NeighborRouterId defines a
   -- unique (to the local router) index referencing a discovered
   -- router within the NHDP MANET.



   -- This table is indexed by an IpAddr associated with
   -- NeighborIfIndex.  Multiple addresses can be associated
   -- with a given NeighborIfIndex.  Each NeighborIfIndex is
   -- associated with a NeighborRouterId.  Throughout this MIB,
   -- the NeighborIfIndex and the NeighborRouterId are used
   -- to define the set of IpAddrs related to the interface
   -- in discussion.


   nhdpUpTime OBJECT-TYPE
       SYNTAX       TimeTicks
       MAX-ACCESS   read-only
       STATUS       current
       DESCRIPTION
           "The number of hundredths of a second since the
            current NHDP process was initialized."
       REFERENCE
          "The NHDP draft."
    ::= { nhdpStateObjGrp 1 }

   nhdpDiscIfSetTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpDiscIfSetEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
           "A router's set of discovered interfaces on
            neighboring routers."
       REFERENCE
          "The NHDP draft."
    ::= { nhdpStateObjGrp 2 }

    nhdpDiscIfSetEntry  OBJECT-TYPE
       SYNTAX      NhdpDiscIfSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The entries include the nhdpDiscRouterId of
           the discovered router, the nhdpDiscIfIndex
           of the discovered interface and the
           current set of addresses associated
           with this neighbor interface.  The
           nhdpDiscIfIndex has to uniquely identify
           the remote interface address sets.  It
           need not be unique across the MANET.
           It must be unique within this router."
       REFERENCE
          "This document."
       INDEX { nhdpDiscIfSetIpAddrType,
               nhdpDiscIfSetIpAddr }
    ::= { nhdpDiscIfSetTable 1 }

    NhdpDiscIfSetEntry ::=
       SEQUENCE {
          nhdpDiscIfSetRouterId
            NeighborRouterId,
          nhdpDiscIfSetIndex
            NeighborIfIndex,
          nhdpDiscIfSetIpAddrType
            InetAddressType,
          nhdpDiscIfSetIpAddr
            InetAddress,
          nhdpDiscIfSetIpAddrPrefixLen
            InetAddressPrefixLength
         }

   nhdpDiscIfSetRouterId  OBJECT-TYPE
      SYNTAX      NeighborRouterId
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The NHDP router ID (locally created)
          of a neighboring router.  Used for cross
          indexing into other NHDP tables and other
          MIBs."
      REFERENCE
         "This NHDP-MIB draft."
   ::= { nhdpDiscIfSetEntry 1 }

   nhdpDiscIfSetIndex  OBJECT-TYPE
      SYNTAX      NeighborIfIndex
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The NHDP interface index (locally created)
          of a neighbor's interface.  Used for cross
          indexing into other NHDP tables and other
          MIBs."
      REFERENCE
         "This document."
   ::= { nhdpDiscIfSetEntry 2 }

   nhdpDiscIfSetIpAddrType  OBJECT-TYPE
      SYNTAX      InetAddressType
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The type of the nhdpDiscIfSetIpAddr
          in the InetAddress MIB [RFC 4001]."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpDiscIfSetEntry 3 }

   nhdpDiscIfSetIpAddr  OBJECT-TYPE
      SYNTAX      InetAddress
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The nhdpDiscIfSetIpAddr is a
          recently used address of a neighbor
          of this router."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpDiscIfSetEntry 4 }

   nhdpDiscIfSetIpAddrPrefixLen  OBJECT-TYPE
      SYNTAX      InetAddressPrefixLength
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "Indicates the number of leading one bits that form the
          mask to be logical-ANDed with the destination address
          before being compared to the value in the
          nhdpDiscIfSetAddr field.  If the resulting
          address block is contained in a block in this
          table, then a match should be returned."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpDiscIfSetEntry 5 }




   -- An NHDP router's Local Information Base (LIB)

      -- Local IF Set Table
      -- Entry (foreach IF): (IfAddrList,
      --                      PrefixMask,
      --                      Manet_indication)
      --
      -- This table is redundant with information in
      -- the nhdpInterfaceTable above.  Hence it is not
      -- reproduced within this MIB module.




      -- Removed Interface Addr Set Table
      -- Entry (foreach Addr): (IfAddrRemoved,
      --                        ExpirationTime)

   nhdpLibRemovedIfAddrSetTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpLibRemovedIfAddrSetEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "A router's Removed Interface Address Set records
          network addresses which were recently used as local
          interface network addresses.  If a router's interface
          network addresses are immutable then the Removed
          Interface Address Set is always empty and MAY be omitted.
          It consists of Removed Interface Address Tuples, one
          per network address."
      REFERENCE
          "The NHDP draft."
   ::= { nhdpStateObjGrp 3 }

   nhdpLibRemovedIfAddrSetEntry  OBJECT-TYPE
      SYNTAX      NhdpLibRemovedIfAddrSetEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
        "A router's Removed Interface Address Set consists
          of Removed Interface Address Tuples, one per network
          address:

          (IR_local_iface_addr, IR_time)

          The association between these addrs and
          the router's Interface is found in the
          Standard MIB II's IP addr table
          (RFC1213)."
      REFERENCE
         "The NHDP draft."
      INDEX { nhdpLibRemovedIfAddrSetIpAddrType,
              nhdpLibRemovedIfAddrSetIpAddr }
   ::= { nhdpLibRemovedIfAddrSetTable 1 }

   NhdpLibRemovedIfAddrSetEntry ::=
      SEQUENCE {
          nhdpLibRemovedIfAddrSetIpAddrType
            InetAddressType,
          nhdpLibRemovedIfAddrSetIpAddr
            InetAddress,
          nhdpLibRemovedIfAddrSetIpAddrPrefixLen
            InetAddressPrefixLength,
          nhdpLibRemovedIfAddrSetIfIndex
            InterfaceIndexOrZero,
          nhdpLibRemovedIfAddrSetIrTime
            TimeTicks
         }

   nhdpLibRemovedIfAddrSetIpAddrType  OBJECT-TYPE
      SYNTAX      InetAddressType
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The type of the nhdpLibRemovedIfAddrSetIpAddr
          in the InetAddress MIB [RFC 4001]."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpLibRemovedIfAddrSetEntry 1 }

   nhdpLibRemovedIfAddrSetIpAddr  OBJECT-TYPE
      SYNTAX      InetAddress
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The nhdpLibRemovedIfAddrSetAddr is a
          recently used address of an interface of
          this router."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpLibRemovedIfAddrSetEntry 2 }

   nhdpLibRemovedIfAddrSetIpAddrPrefixLen  OBJECT-TYPE
      SYNTAX      InetAddressPrefixLength
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "Indicates the number of leading one bits that form the
          mask to be logical-ANDed with the address
          to determine the network address to which
          this interface is attached."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpLibRemovedIfAddrSetEntry 3 }

   nhdpLibRemovedIfAddrSetIfIndex  OBJECT-TYPE
      SYNTAX      InterfaceIndexOrZero
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "Specifies the local IfIndex from which this
           Ip addr was recently removed."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpLibRemovedIfAddrSetEntry 4 }

   nhdpLibRemovedIfAddrSetIrTime  OBJECT-TYPE
      SYNTAX      TimeTicks
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "Specifies when this Tuple expires and MUST be removed
           from this table.  This represents the number of
           hundredths of a second following the time that
           the current NHDP process was initialized."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpLibRemovedIfAddrSetEntry 5 }



   -- Interface Information Base (IIB)

   --
   -- NHDP Interface Information Base (IIB)
   --

   --     IIB Link Set
   --         Entry (foreach 1-H neighbor): (NeighborIfAddrList,
   --                                        HeardTime,
   --                                        SymTime,
   --                                        Quality,
   --                                        Pending,
   --                                        Lost,
   --                                        ExpireTime)
   nhdpIibLinkSetTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpIibLinkSetEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "A Link Set of an interface records links from
          other routers which are, or recently
          were, 1-hop neighbors."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpStateObjGrp 4 }

   nhdpIibLinkSetEntry  OBJECT-TYPE
      SYNTAX      NhdpIibLinkSetEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "A Link Set consists of Link Tuples, each
           representing a single link indexed by the
           local and remote interface pair:

           (L_neighbor_iface_addr_list, L_HEARD_time,
            L_SYM_time, L_quality, L_pending,
            L_lost, L_time)."
      REFERENCE
         "This NHDP-MIB draft."
      INDEX { nhdpIfIndex,
              nhdpIibLinkSet1HopIfIndex }
   ::= { nhdpIibLinkSetTable 1 }

   NhdpIibLinkSetEntry ::=
      SEQUENCE {
          nhdpIibLinkSet1HopIfIndex
            NeighborIfIndex,
          nhdpIibLinkSetLHeardTime
            TimeTicks,
          nhdpIibLinkSetLSymTime
            TimeTicks,
          nhdpIibLinkSetLQuality
            Integer32,
          nhdpIibLinkSetLPending
            TruthValue,
          nhdpIibLinkSetLLost
            TruthValue,
          nhdpIibLinkSetLTime
            TimeTicks
         }

   nhdpIibLinkSet1HopIfIndex  OBJECT-TYPE
      SYNTAX      NeighborIfIndex
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The nhdpIibLinkSet1HopIfIndex is
          the value of the NeighborIfIndex (from
          table nhdpDiscIfSetTable above). This
          object is repeated here to support
          table walks to view the set of neighbors
          of this router."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIibLinkSetEntry 1 }

   nhdpIibLinkSetLHeardTime  OBJECT-TYPE
      SYNTAX      TimeTicks
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpIibLinkSetLHeardTime is
          the time until which the MANET
          interface of the 1-hop neighbor
          would be considered heard if not
          considering link quality.  This
          is measured in hundredths of a second
          since the NHDP process was last
          initialized."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIibLinkSetEntry 2 }

   nhdpIibLinkSetLSymTime  OBJECT-TYPE
      SYNTAX      TimeTicks
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpIibLinkSetLSymTime is the
          time until which the link to the
          1-hop neighbor would be considered
          symmetric if not considering link
          quality.  This is measured in hundredths
          of a second since the NHDP process
          was last initialized."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIibLinkSetEntry 3 }

   nhdpIibLinkSetLQuality  OBJECT-TYPE
      SYNTAX      Integer32 (0..255)
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpIibLinkSetLQuality is a
          dimensionless number between 0
          (inclusive) and 255 (inclusive)
          describing the quality of a link;
          a greater value of L_quality
          indicating a higher quality link."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIibLinkSetEntry 4 }

   nhdpIibLinkSetLPending  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpIibLinkSetLPending is a
          Boolean flag, describing if a
          link is considered pending (i.e.,
          a candidate, but not yet
          established, link)."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIibLinkSetEntry 5 }

   nhdpIibLinkSetLLost  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpIibLinkSetLLost is a
          Boolean flag, describing if a
          link is considered lost due
          to link quality."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIibLinkSetEntry 6 }

   nhdpIibLinkSetLTime  OBJECT-TYPE
      SYNTAX      TimeTicks
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpIibLinkSetLTime specifies
          when this Tuple expires and MUST
          be removed.  This is measured in hundredths
          of a second since the NHDP process last
          initialized."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIibLinkSetEntry 7 }



  --
  --     IIB 2-Hop Set
  --         Entry (foreach IF on a 2-H neighbor):
  --                                 (1NeighIfAddrList,
  --                                  2NeighIfAddr,
  --                                  ExpireTime)
  --
   nhdpIib2HopSetTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpIib2HopSetEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "A 2-Hop Set of an interface records network
          addresses of symmetric 2-hop neighbors, and
          the symmetric links to symmetric 1-hop neighbors
          through which these symmetric 2-hop neighbors
          can be reached.  It consists of 2-Hop Tuples,
          each representing a single network address of
          a symmetric 2-hop neighbor, and a single MANET
          interface of a symmetric 1-hop neighbor.

          (N2_neighbor_iface_addr_list,
           N2_2hop_addr, N2_time)."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpStateObjGrp 5 }

   nhdpIib2HopSetEntry  OBJECT-TYPE
      SYNTAX      NhdpIib2HopSetEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The entries include the 2 hop neighbor addrs,
           which act as the table index, and associated
           1 hop symmetric link addr set, designated through
           the nhdpDiscIfIndex, and an expiration time."
      REFERENCE
         "This NHDP-MIB draft."
      INDEX { nhdpIib2HopSetIpAddressType,
              nhdpIib2HopSetIpAddress }
   ::= { nhdpIib2HopSetTable 1 }

   NhdpIib2HopSetEntry ::=
      SEQUENCE {
          nhdpIib2HopSetIpAddressType
            InetAddressType,
          nhdpIib2HopSetIpAddress
            InetAddress,
          nhdpIib2HopSet1HopIfIndex
            NeighborIfIndex,
          nhdpIib2HopSetN2Time
            TimeTicks
         }

   nhdpIib2HopSetIpAddressType  OBJECT-TYPE
      SYNTAX      InetAddressType
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The type of the nhdpIib2HopSetIpAddress
          in the InetAddress MIB [RFC 4001]."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIib2HopSetEntry 1 }

   nhdpIib2HopSetIpAddress  OBJECT-TYPE
      SYNTAX      InetAddress
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The nhdpIib2HopSetIpAddr is an
          address of an interface of a symmetric
          2-hop neighbor which has a symmetric
          link (using any MANET interface) to
          the indicated symmetric 1-hop neighbor."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIib2HopSetEntry 2 }

   nhdpIib2HopSet1HopIfIndex  OBJECT-TYPE
      SYNTAX      NeighborIfIndex
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpIib2HopSet1HopIfIndex is
          NeighborIfIndex of the one hop
          neighbor which communicated the ipAddress
          of the 2 hop neighbor in this row entry."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIib2HopSetEntry 3 }

   nhdpIib2HopSetN2Time  OBJECT-TYPE
      SYNTAX      TimeTicks
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpIib2HopSetN2Time specifies
          when this column entry expires and
          MUST be removed.  This is measured in
          hundredths of a second since the
          NHDP process last initialized."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIib2HopSetEntry 4 }



   --
   -- Neighbor Information Base (NIB)
   --
   -- Each router maintains a Neighbor Information Base
   -- that records information about addresses of
   -- current and recently symmetric 1-hop neighbors.
   --
   -- All addresses MUST have an associated prefix
   -- length.  Prefix lengths are indicated in HELLO
   -- messages as specified in [1]; if an address
   -- has no specified prefix length, then its prefix
   -- length is equal to the address length.  Two
   -- addresses are considered equal if and only
   -- if their associated prefix lengths are also equal.



   --     NIB Neighbor Set
   --         Entry (foreach 1-H Neighbor):
   --              (AllIfAddrListOfIhNeighbor,
   --               SymmetricIndicator)
   --     The NIB Neighbor Set Table is small because
   --     most of the corresponding information is found
   --     in the nhdpDiscoveredIfTable above.
   --
   nhdpNibNeighborSetTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpNibNeighborSetEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
          "A router's Neighbor Set records all network
           addresses of each 1-hop neighbor."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpStateObjGrp 6 }

   nhdpNibNeighborSetEntry  OBJECT-TYPE
      SYNTAX      NhdpNibNeighborSetEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
          "A router's Neighbor Set consists
           of Neighbor Tuples, each representing
           a single 1-hop neighbor:

           (N_neighbor_addr_list,
            N_symmetric)"
      REFERENCE
         "This document."
      INDEX { nhdpDiscIfSetRouterId }
   ::= { nhdpNibNeighborSetTable 1 }

   NhdpNibNeighborSetEntry ::=
      SEQUENCE {
          nhdpNibNeighborSetNSymmetric
            TruthValue
        }

   nhdpNibNeighborSetNSymmetric  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpNibNeighborNSymmetric is
          a Boolean flag, describing if this
          is a symmetric 1-hop neighbor."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpNibNeighborSetEntry 1 }



  --     Lost Neighbor Set
  --         Entry ( foreach IF foreach 1-H Neighbor): (IfAddr,
  --                                                    ExpireTime)
  --
   nhdpNibLostNeighborSetTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpNibLostNeighborSetEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
          "A router's Lost Neighbor Set records network
           addresses of routers which recently were
           symmetric 1-hop neighbors, but which are now
           advertised as lost."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpStateObjGrp 7 }

   nhdpNibLostNeighborSetEntry  OBJECT-TYPE
      SYNTAX      NhdpNibLostNeighborSetEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "A router's Lost Neighbor Set consists of
          Lost Neighbor Tuples, each representing a
          single such network address:

          (NL_neighbor_addr, NL_time)"
      REFERENCE
         "This NHDP-MIB draft."
      INDEX { nhdpDiscIfSetRouterId }
   ::= { nhdpNibLostNeighborSetTable 1 }

   NhdpNibLostNeighborSetEntry ::=
      SEQUENCE {
          nhdpNibLostNeighborSetNLTime
            TimeTicks
        }

   nhdpNibLostNeighborSetNLTime  OBJECT-TYPE
      SYNTAX      TimeTicks
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpNibLostNeighborSetNLTime
          specifies when this Tuple expires
          and MUST be removed.  This is measured in
          hundredths of a second since the last
          time the NHDP processed was
          initialized."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpNibLostNeighborSetEntry 1 }



--
-- nhdpPerformanceObjGrp
--

-- Contains objects which help to characterize the performance of
-- the NHDP process, typically counters.
--
nhdpPerformanceObjGrp OBJECT IDENTIFIER ::= { nhdpObjects 3 }

  --
  -- Objects per local interface
  --
  nhdpInterfacePerfTable  OBJECT-TYPE
      SYNTAX      SEQUENCE OF NhdpInterfacePerfEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "This table summarizes performance objects that are
          measured per local NHDP interface."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpPerformanceObjGrp 1 }

   nhdpInterfacePerfEntry OBJECT-TYPE
      SYNTAX      NhdpInterfacePerfEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "A single entry contains performance counters for
          a local NHDP interface."
      INDEX { nhdpIfIndex }
   ::= { nhdpInterfacePerfTable 1 }

   NhdpInterfacePerfEntry ::=
      SEQUENCE {
         nhdpIfHelloMessageXmits
            Counter32,
         nhdpIfHelloMessageRecvd
            Counter32,
         nhdpIfHelloMessageXmitAccumulatedSize
            Counter32,
         nhdpIfHelloMessageRecvdAccumulatedSize
            Counter32,
         nhdpIfHelloMessageTriggeredXmits
            Counter32,
         nhdpIfHelloMessagePeriodicXmits
            Counter32,
         nhdpIfHelloMessageXmitAccumulatedSymmetricNeighborCount
            Counter32,
         nhdpIfHelloMessageXmitAccumulatedHeardNeighborCount
            Counter32,
         nhdpIfHelloMessageXmitAccumulatedLostNeighborCount
            Counter32
         }

   nhdpIfHelloMessageXmits  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented each time a HELLO
         message has been transmitted on that interface."
   ::= { nhdpInterfacePerfEntry 1 }

   nhdpIfHelloMessageRecvd  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented each time a
         HELLO message has been received on that interface."
   ::= { nhdpInterfacePerfEntry 2 }

   nhdpIfHelloMessageXmitAccumulatedSize  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented by the number of octets in
         a HELLO message each time a
         HELLO message has been sent."
   ::= { nhdpInterfacePerfEntry 3 }

   nhdpIfHelloMessageRecvdAccumulatedSize  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented by the number of octets in
         a HELLO message each time a
         HELLO message has been received."
   ::= { nhdpInterfacePerfEntry 4 }

   nhdpIfHelloMessageTriggeredXmits  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented each time a triggered
         HELLO message has been sent."
   ::= { nhdpInterfacePerfEntry 5 }

   nhdpIfHelloMessagePeriodicXmits  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented each time a periodic
         HELLO message has been sent."
   ::= { nhdpInterfacePerfEntry 6 }

   nhdpIfHelloMessageXmitAccumulatedSymmetricNeighborCount  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented by the number of advertised
         symmetric neighbors in a HELLO each time a HELLO
         message has been sent."
   ::= { nhdpInterfacePerfEntry 7 }

   nhdpIfHelloMessageXmitAccumulatedHeardNeighborCount  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented by the number of advertised
         heard neighbors in a HELLO each time a HELLO
         message has been sent."
   ::= { nhdpInterfacePerfEntry 8 }

   nhdpIfHelloMessageXmitAccumulatedLostNeighborCount  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter is incremented by the number of advertised
         lost neighbors in a HELLO each time a HELLO
         message has been sent."
   ::= { nhdpInterfacePerfEntry 9 }



  --
  -- Objects per discovered neighbor interface
  --
  nhdpDiscIfSetPerfTable OBJECT-TYPE
       SYNTAX       SEQUENCE OF NhdpDiscIfSetPerfEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
          "A router's set of performance properties for
          each discovered interface of a neighbor."
       REFERENCE
          "The NHDP draft."
   ::= { nhdpPerformanceObjGrp 2 }


   nhdpDiscIfSetPerfEntry  OBJECT-TYPE
       SYNTAX      NhdpDiscIfSetPerfEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "There is an entry for each discovered
          interface of a neighbor."
       REFERENCE
          "This NHDP-MIB draft."
       INDEX { nhdpDiscIfSetIndex }
   ::= { nhdpDiscIfSetPerfTable 1 }

    NhdpDiscIfSetPerfEntry ::=
       SEQUENCE {
          nhdpDiscIfRecvdPackets
            Counter32,
          nhdpDiscIfExpectedPackets
            Counter32
         }

   nhdpDiscIfRecvdPackets  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This counter increments each
          time this device receives a packet from that interface
          of the neighbor."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpDiscIfSetPerfEntry 1 }

   nhdpDiscIfExpectedPackets  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This counter increments by the number
          of missed packets from this neighbor based
          on the packet sequence number each time this
          device receives a packet from that interface
          of the neighbor."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpDiscIfSetPerfEntry 2 }



   --
   -- Objects concerning the neighbor set
   --
   nhdpNibNeighborSetChanges  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This counter increments each time the Neighbor Set changes.
          A change occurs whenever a new Neighbor Tuple has been
          added, a Neighbor Tuple has been removed or any entry of
          a Neighbor Tuple has been modified."
   ::= { nhdpPerformanceObjGrp 3 }



   --
   -- Objects per discovered neighbor
   --
   nhdpDiscNeighborSetPerfTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpDiscNeighborSetPerfEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
          "A router's set of discovered neighbors and
           their properties."
       REFERENCE
          "The NHDP draft."
   ::= { nhdpPerformanceObjGrp 4 }

   nhdpDiscNeighborSetPerfEntry  OBJECT-TYPE
       SYNTAX      NhdpDiscNeighborSetPerfEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The entries include the nhdpDiscRouterId of
           the discovered router, as well as performance
           objects related to changes of the Neighbor
           Set."
       REFERENCE
          "This NHDP-MIB draft."
       INDEX { nhdpDiscIfSetRouterId }
   ::= { nhdpDiscNeighborSetPerfTable 1 }

    NhdpDiscNeighborSetPerfEntry ::=
       SEQUENCE {
          nhdpDiscNeighborNibNeighborSetChanges
            Counter32,
          nhdpDiscNeighborNibNeighborSetUpTime
            TimeTicks,
          nhdpDiscNeighborNibNeighborSetReachableLinkChanges
            Counter32
         }

   nhdpDiscNeighborNibNeighborSetChanges  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This counter increments each time the neighbor becomes
          onlink or offlink.  A neighbor is said to become
          'onlink' if a new Neighbor Tuple is created that
          corresponds to the given neighbor.  It becomes 'offlink'
          if such a tuple has been deleted."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpDiscNeighborSetPerfEntry 1 }

   nhdpDiscNeighborNibNeighborSetUpTime  OBJECT-TYPE
      SYNTAX      TimeTicks
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This object returns the time in hundredths of a second since
         the neighbor becomes 'onlink'.  A neighbor is
         said to become 'onlink' if a new Neighbor Tuple is created that
         corresponds to the given neighbor.  It becomes 'offlink' if
         such a tuple has been deleted."
      REFERENCE
         "This document."
   ::= { nhdpDiscNeighborSetPerfEntry 2 }

   nhdpDiscNeighborNibNeighborSetReachableLinkChanges  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This counter increments each
         time the neighbor changes the interface over which it is
         reachable.  That means that the corresponding Link Tuple of the
         given link moves from the Link Set of one interface to another
         interface."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpDiscNeighborSetPerfEntry 3 }




   --
   -- Objects per discovered 2-hop neighbor
   --
   nhdpIib2HopSetPerfTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpIib2HopSetPerfEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "This table contains performance objects per
          discovered 2-hop neighbor."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpPerformanceObjGrp 5 }

   nhdpIib2HopSetPerfEntry  OBJECT-TYPE
      SYNTAX      NhdpIib2HopSetPerfEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
        "The entries contain performance objects per
          discovered 2-hop neighbor."
      REFERENCE
        "This NHDP-MIB draft."
      INDEX { nhdpDiscIfSetRouterId }
   ::= { nhdpIib2HopSetPerfTable 1 }

   NhdpIib2HopSetPerfEntry ::=
      SEQUENCE {
          nhdpIib2HopSetPerfChanges
            Counter32,
          nhdpIib2HopSetPerfUpTime
            TimeTicks
        }

   nhdpIib2HopSetPerfChanges  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This counter increments each
          time this 2-hop neighbor changes its
          N2_neighbor_iface_addr_list in the
          nhdpIib2HopSetTable."
      REFERENCE
         "The NHDP draft."
   ::= { nhdpIib2HopSetPerfEntry 1 }

   nhdpIib2HopSetPerfUpTime  OBJECT-TYPE
      SYNTAX      TimeTicks
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This object returns the time in hundredths of
          a second when the 2-Hop Tuple
          corresponding to the given 2-hop
          neighbor IP address was registered in the
          nhdpIib2HopSetTable."
      REFERENCE
         "This NHDP-MIB draft."
   ::= { nhdpIib2HopSetPerfEntry 2 }



--
-- nhdpNotifications
--

nhdpNotificationsControl OBJECT IDENTIFIER ::= { nhdpNotifications 1 }
nhdpNotificationsObjects OBJECT IDENTIFIER ::= { nhdpNotifications 2 }
nhdpNotificationsStates OBJECT IDENTIFIER ::= { nhdpNotifications 3 }

   -- nhdpNotificationsControl
   nhdpSetNotification OBJECT-TYPE
      SYNTAX       OCTET STRING (SIZE(4))
      MAX-ACCESS   read-write
      STATUS       current
      DESCRIPTION
         "A 4-octet string serving as a bit map for
          the notification events defined by the NHDP
          notifications. This NHDP notifications where
          a 1 in the bit field represents enabled. The
          right-most bit (least significant) represents
          notification 0.

          This object is persistent and when written
          the entity SHOULD save the change to
          non-volatile storage."
   ::= { nhdpNotificationsControl 1 }

   nhdpMessageSrcType OBJECT-TYPE
      SYNTAX       InetAddressType
      MAX-ACCESS   read-only
      STATUS       current
      DESCRIPTION
         "The IP address type of the
          address of an inbound message that
          cannot be identified by a neighbor instance."
   ::= { nhdpNotificationsControl 2 }

   nhdpMessageSrc OBJECT-TYPE
      SYNTAX       InetAddress
      MAX-ACCESS   read-only
      STATUS       current
      DESCRIPTION
         "The IP address of an inbound message that
          cannot be identified by a neighbor instance.  When
          the last value of a notification using this object is
          needed, but no notifications of that type have been sent,
          this value pertaining to this object should
          be returned as 0.0.0.0 or :: respectively."
   ::= { nhdpNotificationsControl 3 }


   -- nhdpNotificationsObjects

   nhdpNbrStateChange NOTIFICATION-TYPE
      OBJECTS { nhdpDiscIfSetRouterId, -- The originator
                nhdpNbrState           -- The new state
              }
      STATUS       current
      DESCRIPTION
         "An nhdpNbrStateChange notification signifies that
          there has been a change in the state of a
          NHDP neighbor."
   ::= { nhdpNotificationsObjects 1 }

   nhdp2hopNbrStateChange NOTIFICATION-TYPE
      OBJECTS { nhdpDiscIfSetRouterId, -- The originator
                nhdp2hopNbrState       -- The new state
              }
      STATUS       current
      DESCRIPTION
         "An nhdp2hopNbrStateChange notification signifies that
          there has been a change in the state of a 2-hop
          neighbor.  This notification should be
          generated when the 2-hop neighbor state goes
          down or up."
      ::= { nhdpNotificationsObjects 2 }

   nhdpIfRxBadMessage NOTIFICATION-TYPE
      OBJECTS { nhdpDiscIfSetRouterId, -- The originator of
                nhdpDiscIfSetIndex,    -- The interface
                nhdpMessageSrcType,    -- The source IP addrType
                nhdpMessageSrc         -- The source IP address
              }
      STATUS       current
      DESCRIPTION
         "An nhdpIfRxBadMessage notification signifies that a
          HELLO message has been received on an
          interface that cannot be parsed."
   ::= { nhdpNotificationsObjects 3 }


   nhdpIfStateChange NOTIFICATION-TYPE
      OBJECTS { nhdpIfIndex, -- The local interface
                nhdpIfState  -- The new state
              }
      STATUS       current
      DESCRIPTION
         "An nhdpIfStateChange notification signifies that there
          has been a change in the state of an NHDP
          interface.  This notification should be generated
          when the interface goes up or down, or when
          the list of addresses of that interface
          changes."
   ::= { nhdpNotificationsObjects 4 }




   -- nhdpNotificationStates
   nhdpNbrState OBJECT-TYPE
      SYNTAX       INTEGER {
                       down (0),
                       asymmetric (1),
                       symmetric(2)
                   }
      MAX-ACCESS   read-only
      STATUS       current
      DESCRIPTION
         "NHDP neighbor states."
      DEFVAL { down }
   ::= { nhdpNotificationsStates 1 }

   nhdp2hopNbrState OBJECT-TYPE
      SYNTAX       INTEGER {
                       down (0),
                       up (1)
                   }
      MAX-ACCESS   read-only
      STATUS       current
      DESCRIPTION
         "NHDP 2hop neighbor states."
      DEFVAL { down }
   ::= { nhdpNotificationsStates 2 }

   nhdpIfState OBJECT-TYPE
      SYNTAX       INTEGER {
                       down (0),
                       up (1),
                       addresschange(2) -- If a new address has been
                                         -- added or an address has
                                         -- been removed
                    }
      MAX-ACCESS   read-only
      STATUS       current
      DESCRIPTION
         "NHDP interface states."
      DEFVAL { down }
   ::= { nhdpNotificationsStates 3 }



--
-- nhdpConformance information
--

nhdpCompliances       OBJECT IDENTIFIER ::= { nhdpConformance 1 }
nhdpMIBGroups         OBJECT IDENTIFIER ::= { nhdpConformance 2 }


-- Compliance Statements
nhdpBasicCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
      "The basic implementation requirements for
       managed network entities that implement
       NHDP."
   MODULE -- this module
   MANDATORY-GROUPS { nhdpConfigurationGroup }
::= { nhdpCompliances 1 }


nhdpFullCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
      "The full implementation requirements for
       managed network entities that implement
       NHDP."
   MODULE -- this module
   MANDATORY-GROUPS { nhdpConfigurationGroup,
                      nhdpStateGroup,
                      nhdpPerformanceGroup,
                      nhdpNotificationObjectGroup,
                      nhdpNotificationGroup }
::= { nhdpCompliances 2 }


--
-- Units of Conformance
--
nhdpConfigurationGroup OBJECT-GROUP
   OBJECTS {
              nhdpIfIndex,
              nhdpIfStatus,
              nhdpHelloInterval,
              nhdpHelloMinInterval,
              nhdpRefreshInterval,
              nhdpLHoldTime,
              nhdpHHoldTime,
              nhdpHystAcceptQuality,
              nhdpHystRejectQuality,
              nhdpInitialQuality,
              nhdpInitialPending,
              nhdpHpMaxJitter,
              nhdpHtMaxJitter,
              nhdpNHoldTime,
              nhdpIHoldTime,
              nhdpIfRowStatus
           }
   STATUS  current
   DESCRIPTION
      "Set of NHDP configuration objects implemented
       in this module."
::= { nhdpMIBGroups 2 }

nhdpStateGroup OBJECT-GROUP
   OBJECTS {
              nhdpUpTime,
              nhdpDiscIfSetRouterId,
              nhdpDiscIfSetIndex,
              nhdpDiscIfSetIpAddrPrefixLen,
              nhdpLibRemovedIfAddrSetIpAddrPrefixLen,
              nhdpLibRemovedIfAddrSetIfIndex,
              nhdpLibRemovedIfAddrSetIrTime,
              nhdpIibLinkSetLHeardTime,
              nhdpIibLinkSetLSymTime,
              nhdpIibLinkSetLQuality,
              nhdpIibLinkSetLPending,
              nhdpIibLinkSetLLost,
              nhdpIibLinkSetLTime,
              nhdpIib2HopSet1HopIfIndex,
              nhdpIib2HopSetN2Time,
              nhdpNibNeighborSetNSymmetric,
              nhdpNibLostNeighborSetNLTime
           }
    STATUS  current
    DESCRIPTION
       "Set of NHDP state objects implemented
         in this module."
::= { nhdpMIBGroups 3 }

nhdpPerformanceGroup OBJECT-GROUP
   OBJECTS {
              nhdpIfHelloMessageXmits,
              nhdpIfHelloMessageRecvd,
              nhdpIfHelloMessageXmitAccumulatedSize,
              nhdpIfHelloMessageRecvdAccumulatedSize,
              nhdpIfHelloMessageTriggeredXmits,
              nhdpIfHelloMessagePeriodicXmits,
              nhdpIfHelloMessageXmitAccumulatedSymmetricNeighborCount,
              nhdpIfHelloMessageXmitAccumulatedHeardNeighborCount,
              nhdpIfHelloMessageXmitAccumulatedLostNeighborCount,
              nhdpDiscIfRecvdPackets,
              nhdpDiscIfExpectedPackets,
              nhdpNibNeighborSetChanges,
              nhdpDiscNeighborNibNeighborSetChanges,
              nhdpDiscNeighborNibNeighborSetUpTime,
              nhdpDiscNeighborNibNeighborSetReachableLinkChanges,
              nhdpIib2HopSetPerfChanges,
              nhdpIib2HopSetPerfUpTime
          }
    STATUS  current
    DESCRIPTION
       "Set of NHDP performance objects implemented
         in this module."
::= { nhdpMIBGroups 4 }

nhdpNotificationObjectGroup OBJECT-GROUP
   OBJECTS {
             nhdpSetNotification,
             nhdpMessageSrcType,
             nhdpMessageSrc,
             nhdpIfState,
             nhdpNbrState,
             nhdp2hopNbrState
           }
   STATUS  current
   DESCRIPTION
      "Set of NHDP notification objects implemented
       in this module."
::= { nhdpMIBGroups 5 }

nhdpNotificationGroup NOTIFICATION-GROUP
   NOTIFICATIONS {
             nhdpNbrStateChange,
             nhdp2hopNbrStateChange,
             nhdpIfRxBadMessage,
             nhdpIfStateChange
           }
   STATUS  current
   DESCRIPTION
      "Set of NHDP notifications implemented
       in this module."
::= { nhdpMIBGroups 6 }

END



 TOC 

5.7.  Security Considerations

This MIB defines objects for the configuration, monitoring and notification of the Neighborhood Discovery Protocol (NHDP) [NHDP] (Clausen, T., Dearlove, C., and J. Dean, “The MANET Neighborhood Discovery Protocol (NHDP),” October 2009.). NHDP allows routers to acquire topological information up to two hops away by virtue of exchanging HELLO messages. The information acquired by NHDP is used by other protocols, such as OLSRv2 [OLSRv2] (Clausen, T., Dearlove, C., and P. Philippe, “The Optimized Link State Routing Protocol version 2,” September 2009.) and SMF [SMF] (Macker, J., “Simplified Multicast Forwarding,” July 2009.), and possibly other protocols. The neighborhood information, exchanged between routers using NHDP, serves these routing protocols as a baseline for calculating paths to all destinations in the MANET, relay set selection for network-wide transmissions etc.

There are a number of management objects defined in this MIB module with a MAX-ACCESS clause of read-write and/or read-create. Such objects may be considered sensitive or vulnerable in some network environments. The support for SET operations in a non-secure environment without proper protection can have a negative effect on network operations. These are the tables and objects and their sensitivity/vulnerability:

Some of the readable objects in this MIB module (i.e., objects with a MAX-ACCESS other than not-accessible) may be considered sensitive or vulnerable in some network environments. It is thus important to control even GET and/or NOTIFY access to these objects and possibly to even encrypt the values of these objects when sending them over the network via SNMP. These are the tables and objects and their sensitivity/vulnerability:

MANET technology is often deployed to support communications of emergency services or military tactical applications. In these applications, it is imperative to maintain the proper operation of the communications network and to protect sensitive information related to its operation. Therefore, when implementing these capabilities, the full use of SNMPv3 cryptographic mechanisms for authentication and privacy is RECOMMENDED.

SNMP versions prior to SNMPv3 did not include adequate security. Even if the network itself is secure (for example by using IPSec), there is no control as to who on the secure network is allowed to access and GET/SET (read/change/create/delete) the objects in this MIB module.

It is RECOMMENDED that implementers consider the security features as provided by the SNMPv3 framework (see [RFC3410] (Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” December 2002.), section 8), including full support for the SNMPv3 cryptographic mechanisms (for authentication and privacy).

Further, deployment of SNMP versions prior to SNMPv3 is NOT RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to enable cryptographic security. It is then a customer/operator responsibility to ensure that the SNMP entity giving access to an instance of this MIB module is properly configured to give access to the objects only to those principals (users) that have legitimate rights to indeed GET or SET (change/create/delete) them.



 TOC 

5.8.  IANA Considerations

Editor's Note (to be removed prior to publication): the IANA is requested to assign a value for "XXXX" under the 'mib-2' subtree and to record the assignment in the SMI Numbers registry. When the assignment has been made, the RFC Editor is asked to replace "XXXX" (here and in the MIB module) with the assigned value and to remove this note.

Note well: prior to official assignment by the IANA, a draft document MUST use placeholders (such as "XXXX" above) rather than actual numbers. See RFC4181 Section 4.5 for an example of how this is done in a draft MIB module.



 TOC 

5.9.  Contributors

This MIB document uses the template authored by D. Harrington which is based on contributions from the MIB Doctors, especially Juergen Schoenwaelder, Dave Perkins, C.M.Heard and Randy Presuhn.



 TOC 

6.  References



 TOC 

6.1. Normative References

[RFC2863] McCloghrie, K. and F. Kastenholz, “The Interfaces Group MIB,” RFC 2863, June 2000 (TXT).
[RFC3418] Presuhn, R., “Management Information Base (MIB) for the Simple Network Management Protocol (SNMP),” STD 62, RFC 3418, December 2002 (TXT).
[RFC2119] Bradner, S., “Key words for use in RFCs to Indicate Requirement Levels,” BCP 14, RFC 2119, March 1997 (TXT, HTML, XML).
[RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Structure of Management Information Version 2 (SMIv2),” STD 58, RFC 2578, April 1999 (TXT).
[RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., “Textual Conventions for SMIv2,” STD 58, RFC 2579, April 1999 (TXT).
[RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder, “Conformance Statements for SMIv2,” STD 58, RFC 2580, April 1999 (TXT).
[NHDP] Clausen, T., Dearlove, C., and J. Dean, “The MANET Neighborhood Discovery Protocol (NHDP),” draft-ietf-manet-nhdp-11 (work in progress), October 2009 (TXT).
[RFC4001] Daniele, M., Haberman, B., Routhier, S., and J. Schoenwaelder, “Textual Conventions for Internet Network Addresses,” RFC 4001, February 2005 (TXT).


 TOC 

6.2. Informative References

[REPORT] Cole, R., Macker, J., and A. Morton, “Definition of Managed Objects for Performance Reporting,” draft-cole-manet-report-mib-02 (work in progress), March 2010 (TXT).
[RFC5148] Clausen, T., Dearlove, C., and B. Adamson, “Jitter Considerations in Mobile Ad Hoc Networks (MANETs),” RFC 5148, February 2008 (TXT).
[OLSRv2] Clausen, T., Dearlove, C., and P. Philippe, “The Optimized Link State Routing Protocol version 2,” work in progress draft-ietf-manet-olsrv2-10.txt, September 2009.
[SMF] Macker, J., “Simplified Multicast Forwarding,” work in progress draft-ietf-manet-smf-09.txt, July 2009.
[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, “Introduction and Applicability Statements for Internet-Standard Management Framework,” RFC 3410, December 2002 (TXT).
[RFC3781] Strauss, F. and J. Schoenwaelder, “Next Generation Structure of Management Information (SMIng) Mappings to the Simple Network Management Protocol (SNMP),” RFC 3781, May 2004 (TXT).


 TOC 

Appendix A.  Change Log

Here we list the changes made to the various drafts of this MIB.

We list here the changes made on the draft-ietf-manet-nhdp-mib-04 draft to generate the draft-ietf-manet-nhdp-mib-05 draft.

  1. Cleaned up the time objects within the MIB using the TimeTicks Textual Convention.
  2. Changed the definition of the 'nhdpDiscNeighborNibNeighborSetUpTime' object to track only the entry uptime, since the time since 'down' referred to a removed tuple.

We list here the changes made on the draft-ietf-manet-nhdp-mib-03 draft to generate the draft-ietf-manet-nhdp-mib-04 draft.

  1. Cleaned up and condensed text in the front material to this draft. Specifically, shortened the Configuration and State Group sections, deferring to the MIB as definitive. Left the Performance Group discussion primarily intact due to its discussion of base and derived performance objects and statistics and their value to management and operations of NHDP.
  2. Added information identifying objects requiring non-volatile storage within the DESCRIPTION clause of the objects within the NHDP-MIB.

We list here the changes made on the draft-ietf-manet-nhdp-mib-02 draft to generate the draft-ietf-manet-nhdp-mib-03 draft.

  1. Cleaned up text in the Performance Group section defining the base versus the derived (from the REPORT-MIB) objects.
  2. Added the local nhdpIfIndex to the nhdpIibLinkSetTable. A duplex of interface indexes is required to define a wireless link.
  3. Added text to the Security Considerations section.
  4. Added notifications.

We list here the changes made on the draft-ietf-manet-nhdp-mib-01 draft to generate the draft-ietf-manet-nhdp-mib-02 draft.

  1. Cleaned up several things (e.g. moved N_HOLD_TIME from interface parameter to router parameter)
  2. Updated to NHDP draft version 11

We list here the changes made on the draft-ietf-manet-nhdp-mib-00 draft to generate the draft-ietf-manet-nhdp-mib-01 draft.

  1. Made and extensive addition in the area of performance monitoring. Added text in the front material, added a PerformanceGroup to the MIB and added the PerformanceGroup to the Conformance Sections.

We list here the changes made on the draft-cole-manet-nhdp-mib-01 draft to generate the draft-ietf-manet-nhdp-mib-00 draft.

  1. Cleanup up numerous typos and add material to the Conformance section in order to pass the MIB checker, i.e., smilint.

We list here the changes made on the draft-cole-manet-nhdp-mib-00 draft to generate the draft-cole-manet-nhdp-mib-01 draft.

  1. Defined the NeighborIfIndex and the NeighborRouterId textual conventions. These identify a remote neighbor IfIndex and a remote neighbor router and are used as indexes into NHDP state tables. These constructs were necessary in order to associate address lists with specific remote interfaces as required by the NHDP protocol specification.
  2. Developed the nhdpInterfaceTable as part of the configuration group.
  3. Developed the nhdpDiscIfSetTable as a means to associate address lists with remotely discovered neighbor interfaces.
  4. Added tables defining the router's NHDP Local Information Base (LIB) as specified in the NHDP protocol specification.
  5. Added tables defining the router's NHDP Interface information Base (IIB) as specified in the NHDP protocol specification.
  6. Added tables defining the router's NHDP Neighbor Information Base (NIB) as specified in the NHDP protocol specification.
  7. Aligned the NHDP-MIB and the OLSRv2-MIB configuration tables and indexing.


 TOC 

Appendix B. 

***************************************************************
* Note to the RFC Editor (to be removed prior to publication) *
*                                                             *
* 1) The reference to RFCXXXX within the DESCRIPTION clauses  *
* of the MIB module point to this draft and are to be         *
* assigned by the RFC Editor.                                 *
*                                                             *
***************************************************************



 TOC 

Authors' Addresses

  Ulrich Herberg
  LIX, Ecole Polytechnique
  Palaiseau Cedex, 91128
  France
EMail:  ulrich@herberg.name
URI:  http://www.herberg.name/
  
  Robert G. Cole
  US Army CERDEC
  328 Hopkins Road, Bldg 245
  Aberdeen Proving Ground, Maryland 21005
  USA
Phone:  +1 410 278 6779
EMail:  robert.g.cole@us.army.mil
URI:  http://www.cs.jhu.edu/~rgcole/
  
  Ian D Chakeres
  CenGen
  9250 Bendix Road North
  Columbia, Maryland 560093
  USA
EMail:  ian.chakeres@gmail.com
URI:  http://www.ianchak.com/