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Versions: (draft-cole-manet-nhdp-mib) 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 RFC 6779

Internet Engineering Task Force                               U. Herberg
Internet-Draft                                  LIX, Ecole Polytechnique
Intended status: Standards Track                                 R. Cole
Expires: March 9, 2012                                    US Army CERDEC
                                                             I. Chakeres
                                                                  CenGen
                                                       September 6, 2011


 Definition of Managed Objects for the Neighborhood Discovery Protocol
                      draft-ietf-manet-nhdp-mib-10

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 parameters of the
   Neighborhood Discovery Protocol (NHDP) process on a router.  The MIB
   defined in this memo, denoted NHDP-MIB, also reports state,
   performance information and notifications.  This additional state and
   performance information is useful to troubleshoot problems and
   performance issues during neighbor discovery.

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 March 9, 2012.

Copyright Notice

   Copyright (c) 2011 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



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   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 . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  The Internet-Standard Management Framework . . . . . . . . . .  3
   3.  Conventions  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   4.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
     4.1.  Terms  . . . . . . . . . . . . . . . . . . . . . . . . . .  3
   5.  Structure of the MIB Module  . . . . . . . . . . . . . . . . .  4
     5.1.  Notifications  . . . . . . . . . . . . . . . . . . . . . .  4
       5.1.1.  Introduction . . . . . . . . . . . . . . . . . . . . .  4
       5.1.2.  Notification Generation  . . . . . . . . . . . . . . .  5
       5.1.3.  Limiting Frequency of Notifications  . . . . . . . . .  5
     5.2.  The Configuration Group  . . . . . . . . . . . . . . . . .  5
     5.3.  The State Group  . . . . . . . . . . . . . . . . . . . . .  6
     5.4.  The Performance Group  . . . . . . . . . . . . . . . . . .  6
   6.  Relationship to Other MIB Modules  . . . . . . . . . . . . . . 15
     6.1.  Relationship to the SNMPv2-MIB . . . . . . . . . . . . . . 15
     6.2.  Relationship to Routing Protocol MIBs Relying on the
           NHDP-MIB . . . . . . . . . . . . . . . . . . . . . . . . . 15
     6.3.  MIB Modules Required for IMPORTS . . . . . . . . . . . . . 16
   7.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . 16
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 63
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 64
   10. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 65
   11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 65
   12. References . . . . . . . . . . . . . . . . . . . . . . . . . . 65
     12.1. Normative References . . . . . . . . . . . . . . . . . . . 65
     12.2. Informative References . . . . . . . . . . . . . . . . . . 66
   Appendix A.    . . . . . . . . . . . . . . . . . . . . . . . . . . 66















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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 parameters of the
   Neighborhood Discovery Protocol [RFC6130] process on a router.  The
   MIB defined in this memo, denoted NHDP-MIB, also reports state,
   performance information and notifications.  This additional state and
   performance information is useful to troubleshoot problems and
   performance issues during neighbor discovery.

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
   [RFC3410].

   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
   [RFC2578], [RFC2579] and [RFC2580].

3.  Conventions

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   OPTIONAL" in this document are to be interpreted as described in
   [RFC2119].

4.  Overview

   [RFC6130] 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.

4.1.  Terms

   The following definitions apply throughout this document:

   o  Notification Objects - triggers and associated notification
      messages allowing for asynchronous tracking of pre-defined events
      on the managed router.




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   o  Configuration Objects - switches, tables, objects which are
      initialized to default settings or set through the management
      interface defined by this MIB.

   o  State Objects - automatically generated values which define the
      current operating state of the NHDP protocol process in the
      router.

   o  Performance Objects - automatically generated values which help an
      administrator or automated tool to assess the performance of the
      NHDP protocol process on the router and the overall discovery
      performance within the MANET.

5.  Structure of the MIB Module

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

   o  nhdpNotifications - objects defining NHDP-MIB notifications.

   o  nhdpObjects - defining objects within this MIB.  The objects are
      arranged into the following groups:

      *  Configuration Group - defining objects related to the
         configuration of the NHDP instance on the router.

      *  State Group - defining objects which reflect the current state
         of the NHDP instance running on the router.

      *  Performance Group - defining objects which are useful to a
         management station when characterizing the performance of NHDP
         on the router and in the MANET.

   o  nhdpConformance - defining the minimal and maximal conformance
      requirements for implementations of this MIB.

5.1.  Notifications

   This section describes the use of notifications, and mechanisms to
   enhance the ability to manage NHDP networks.

5.1.1.  Introduction

   Notifications can be emitted by an NHDP router as a reaction to a
   specific event.  This allows a network manager to efficiently
   determine the source of problems or significant changes of
   configuration or topology, instead of polling a possibly large number
   of NHDP routers.



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5.1.2.  Notification Generation

   When an exception event occurs, the application notifies the local
   agent, which sends a notification to the appropriate SNMP management
   stations.  The message includes the notification type and may include
   a list of notification-specific variables.  Section 7 contains the
   notification definitions, which includes the variable lists.  At
   least one IP address of the NHDP router that originates the
   notification is included in the variable list so that the network
   manager may determine the source of the notification.

5.1.3.  Limiting Frequency of Notifications

   To limit the frequency of notifications, the following additional
   mechanisms are suggested, similar to those in [RFC4750]:

5.1.3.1.  Ignoring Initial Activity

   The majority of critical events occur when NHDP is enabled on a
   router, at which time the symmetric neighbors and two-hop neighbors
   of the NHDP router are discovered.  During this initial period, a
   potential flood of notifications is unnecessary since the events are
   expected.  To avoid unnecessary notifications, a router should not
   originate expected notifications until a certain time interval has
   elapsed, which is to be predefined by the network manager.

5.1.3.2.  Throttling Traps

   The mechanism for throttling the notifications is the same as in
   [RFC4750] (i.e. the amount of transmitted notifications per time is
   bounded).

   Appropriate values for the window time and upper bound are to be
   selected by the network manager and depend on the deployment of the
   MANET.

5.1.3.3.  One Notification per Event

   Similar to the according mechanism in [RFC4750], only one
   notification is sent per event.

5.2.  The Configuration Group

   The NHDP router 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 in [RFC6130].  For all of the configuration



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   parameters, the same constraints and default values of these
   parameters as defined in [RFC6130] are followed.

5.3.  The State Group

   The State Group reports current state information of a router running
   [RFC6130].  The NHDP-MIB State Group tables were designed to contain
   the complete set of state information defined within the information
   bases specified in Section 6, Section 7 and Section 8 of [RFC6130].

   Two constructs, i.e., TEXTUAL CONVENTIONs, are defined to support of
   the tables in the State Group.  The NHDP protocol stores and indexes
   information through sets of (dynamically defined) addresses, i.e.,
   address sets.  Within SMIv2 it is not possible to index tables with
   variably defined address sets.  Hence, these TEXTUAL CONVENTIONS are
   defined to provide a local mapping between NHDP managed address sets
   and SMIv2 table indexing.  These constructs are the NeighborIfIndex
   and NeighborRouterIndex.  These are locally (to the NHDP router)
   defined, unique identifiers of virtual neighbors and neighbor
   interfaces.  Due to the nature of the NHDP protocol, the local router
   may have identified distinct address sets but is not able to
   associate these as a single interface.  Hence, two or more
   NeighborIfIndexes pointing to multiple distinct address sets may in
   fact be related to a common neighbor interface.  This ambiguity may
   also hold with respect to the assignment of the NeighborRouterIndex.
   The local MIB agent is responsible for managing, aggregating and
   retiring the defined indexes, and in updating MIB tables using these
   indexes as the local router learns more about its neighbors'
   topology.  These constructs are used to define indexes to the
   appropriate State Group tables and to correlate table entries to
   address sets, virtual neighbor interfaces and virtual neighbors
   within the MANET.

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 are explicitly defined in the NHDP-MIB and others which can be
   estimated through a combination of base objects from this MIB.
   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 can be estimated.

   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:




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   The following objects return statistics related to HELLO messages:

   o  Total number of sent HELLO messages on an interface

         This is a Base Object.

         Object name: nhdpIfHelloMessageXmits

         Object type: Counter32

   o  Total number of received HELLO messages on an interface

         This is a Base Object.

         Object name: nhdpIfHelloMessageRecvd

         Object type: Counter32

   o  Total number of sent periodic HELLO messages on an interface

         This is a Base Object.

         Object name: nhdpIfHelloMessagePeriodicXmits

         Object type: Counter32

   o  Total number of sent triggered HELLO messages on an interface

         This is a Base Object.

         Object name: nhdpIfHelloMessageTriggeredXmits

         Object type: Counter32

   o  Acquire history of HELLO message scheduling instances for a given
      time duration on an interface

         It is desirable to develop the history of the exact timestamps
         of each HELLO message that has been sent as well as the type of
         the message (triggered or periodical).  The list of events
         starts at the given point of time t0 and ends at the given time
         t1.

         This is a Derived Object estimated from the NHDP-MIB.  It is
         derived from, e.g., the nhdpIfHelloMessagePeriodicXmits Base
         Object from the NHDP-MIB.





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   o  Histogram of the intervals between HELLO messages on an interface

         It is desirable to track the values (in a 2-dimensional array)
         that represent a histogram of intervals between HELLO messages.
         The histogram would display the distribution of intervals
         between two consecutive HELLOs using a given bin size.  It
         includes all HELLOs that have been sent after the given time t0
         and before the given time t1.

         This is a Derived Object to be estimated from objects within
         the NHDP-MIB.  It can be estimated from, e.g., the
         nhdpIfHelloMessagePeriodicXmits Base Object from the NHDP-MIB.
         The network management application could convert this
         information into the desired histogram.

   o  Changes of the frequency of the message scheduling on an interface

         This object will divide the given time interval from t0 to t1
         into a given number of equal parts.  It then creates a
         histogram for each part and calculates the distances (e.g.
         using the Bhattacharyya distance) between each two adjacent
         histograms in time.  A higher value between two histograms
         means more difference between the histograms.  For instance,
         this is representative of an event that suddenly sends many
         triggered HELLO messages, whereas before there have been only
         very few such triggered messages.

         This is a Derived Object estimated from objects within the
         NHDP-MIB, as previously discussed, albeit this is a bit more
         complex with respect to the management application.

   o  Average number of sent HELLO messages per second between the given
      time t0 and t1 on an interface

         This is a Derived Object estimated from, e.g., the
         nhdpIfHelloMessageXmits Base Object.

   o  Average number of received HELLO messages per second on an
      interface between the given time t0 and t1

         This is a Derived Object estimated from the NHDP-MIB.  See the
         previous discussion.

   o  Total accumulated size in octets of sent HELLO messages on an
      interface






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         This is a Base Object.

         Object name: nhdpIfHelloMessageXmitAccumulatedSize

         Object type: Counter64

   o  Total accumulated size in octets of received HELLO messages on an
      interface

         This is a Base Object.

         Object name: nhdpIfHelloMessageRecvdAccumulatedSize

         Object type: Counter64

   o  Average size in octets of sent HELLO messages between the given
      time t0 and t1 on an interface

         This is a Derived Object estimated from, e.g., the
         nhdpIfHelloMessageRecvdAccumulatedSize Base Object from this
         NHDP-MIB.

   o  Average size in octets of received HELLO messages between the
      given time t0 and t1 on an interface

         This is a Derived Object estimated from the NHDP-MIB.  See
         previous discussion.

   o  Total accumulated number of advertised symmetric neighbors in
      HELLOs on that interface.

         This is a Base Object.

         Object name:
         nhdpIfHelloMessageXmitAccumulatedSymmetricNeighborCount

         Object type: Counter32

   o  Total accumulated number of advertised heard neighbors in HELLOs
      on that interface

         This is a Base Object.

         Object name:
         nhdpIfHelloMessageXmitAccumulatedHeardNeighborCount






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         Object type: Counter32

   o  Total accumulated number of advertised lost neighbors in HELLOs on
      that interface

         This is a Base Object.

         Object name: nhdpIfHelloMessageXmitAccumulatedLostNeighborCount

         Object type: Counter32

   o  Number of expected packets from a given neighbor based on the
      packet sequence number on an interface

         This is a Base Object.

         Object name: nhdpDiscIfExpectedPackets

         Object type: Counter32

   o  Success rate of received packets (number of received packets
      divided by number of expected packets based on the packet sequence
      number)

         This is a Derived Object to be pulled from this NHDP-MIB.  It
         is derived from, e.g., the nhdpDiscIfRecvdPackets and the
         nhdpDiscIfExpectedPackets Base Objects defined in this MIB.
         This metric is then computed by the network management
         application.

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

   o  Number of Neighbor Set changes

         This object counts each Neighbor Set change.  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.

         This is a Base Object.

         Object name: nhdpNibNeighborSetChanges

         Object type: Counter32






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   o  Acquire history of Neighbor Set changes

         This object returns the history of the exact timestamps of each
         time the Neighbor Set has been changed.

         This is a Derived Object estimated from the NHDP-MIB.  It is
         derived from the previously discussed Base Object.

   o  Histogram of the intervals between Neighbor Set changes

         Returns the values (in a 2-dimensional array) that represent a
         histogram of intervals between Neighbor Set changes.

         This is a Derived Object estimated from the previously
         discussed Base Object.

   o  Changes of the frequency of the Neighbor Set changes

         This object will divide the given time interval from t0 to t1
         into a given number of equal parts.  It then creates a
         histogram for each part and calculates the distances (e.g.
         using the Bhattacharyya distance) between each two adjacent
         histograms in time.  A higher value between two histograms
         means more difference between the histograms.

         This is a Derived Object estimated from the previously
         discussed Base Object.

   The next objects examine the uptime of a given neighbor (as listed in
   the Neighbor Set):

   o  Number of changes of a Neighbor Tuple

         Returns the number of changes to the given Neighbor Tuple.

         This is a Base Object.

         Object name: nhdpDiscNeighborNibNeighborSetChanges

         Object type: Counter32

   o  Neighbor uptime

         Returns the number of hundredths of a second since the Neighbor
         Tuple corresponding to the given neighbor exists.






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         This is a Base Object.

         Object name: nhdpDiscNeighborNibNeighborSetUpTime

         Object type: TimeTicks

   o  Acquire history of change of the 'nbrup' status of a given
      neighbor

         This object returns the history of the exact timestamps of each
         time the neighbor (as listed in the Neighbor Set) becomes
         'nbrup' or 'nbrdown'.  A neighbor is said to become 'nbrup' if
         a new Neighbor Tuple is created that corresponds to the given
         neighbor.  It becomes 'nbrdown' if such a Neighbor Tuple has
         been deleted.  The existence of a Lost Neighbor Tuple for that
         previous neighbor does not mean that the neighbor is still
         'nbrup'.

         This is a Derived Object estimated from, e.g., the
         nhdpDiscNeighborNibNeighborSetChanges Base Object defined in
         this MIB.

   o  Histogram of the intervals between a change of the 'nbrup' status
      of a given neighbor

         Returns the values that represent a histogram of intervals
         between a change of the 'nbrup' status of a given neighbor.
         The histogram includes all changes that have been made after
         the given time t0 and before the given time t1.

         This is a Derived Object estimated from, e.g. the
         nhdpDiscNeighborNibNeighborSetChanges Base Object defined in
         this MIB.  This object sits in the nhdpDiscNeighborSetPerfTable
         which is indexed by the nhdpDiscRouterIndex.

   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.

   o  Count the changes of the interface(s) over which a given neighbor
      (as listed in the Neighbor Set) can be reached

         This object counts each time the neighbor changes the
         interface(s) over which it is reachable.  A change in the set
         of Link Tuples corresponding to the appropriate Neighbor Tuple
         is registered, i.e. a corresponding Link Tuple is added or
         removed from the set of all corresponding Link Tuples.



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         This is a Base Object.

         Object name: nhdpDiscNeighborNibNeighborSetReachableLinkChanges

         Object type: Counter32

   o  Acquire history of changes of the interface(s) over which a given
      neighbor can be reached

         This object returns the history of the exact timestamps of each
         time the neighbor changes the interface(s) over which it is
         reachable.  That means that there is a change in the set of
         corresponding Link Tuples of for that Neighbor Tuple, i.e. a
         corresponding Link Tuple is added or removed from the set of
         all corresponding Link Tuples.

         This is a Derived Object estimated from, e.g., the
         nhdpDiscNeighborNibNeighborSetReachableLinkChanges Base Object.

   o  Histogram of the intervals between a change of the interface(s)
      over which a given neighbor is reachable

         Returns the values that represent a histogram of intervals
         between a change of the interface over which a given neighbor
         is reachable after the given time t0 and before the given time
         t1.

         This is a Derived Object estimated from the previously
         discussed Base Object, nhdpDiscNeighborNibNeighborSetChanges
         counter.

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

   o  Count the changes of the union of all N2_neighbor_iface_addr_list
      of 2-hop Tuples with an N2_2hop_addr equal to one of the given
      2-hop neighbor's addresses

         This object returns the count of the times the 2-hop neighbor
         changes the neighbor(s) over which it is reachable.

         This is a Base Object.

         Object name: nhdpIib2HopSetPerfChanges







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         Object type: Counter32

   o  Acquire history of changes of the N2_neighbor_iface_addr_list of a
      given 2-hop neighbor

         This object returns the history of the exact timestamps of each
         time the 2-hop neighbor changes the neighbor(s) over which it
         is reachable.

         This is a Derived Object estimated from the previously
         discussed Base Object, nhdpIib2HopSetPerfChanges counter.

   o  Histogram of the intervals between a change of a 2-hop neighbor's
      N2_neighbor_iface_addr_list

         Returns the values that represent a histogram of intervals
         between a change of the neighbor(s) over which the 2-hop
         neighbor is reachable after the given time t0 and before the
         given time t1.

         This is a Derived Object estimated from the previously
         discussed Base Object, nhdpIib2HopSetPerfChanges counter.

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

   o  2-hop Neighbor uptime

         Returns the number of hundredths of a second since the any
         2-Hop Tuple with a N2_2hop_addr of the given 2-hop neighbor IP
         address was registered.

         This is a Base Object.

         Object name: nhdpIib2HopSetPerfUpTime

         Object type: TimeTicks

   o  Acquire history of change of 'nbrup' status of a given 2-hop
      neighbor

         This object returns the history of the exact timestamps of each
         time the 2-hop neighbor becomes 'nbrup' or 'nbrdown'.  A 2-hop
         neighbor becomes 'nbrup' when the first 2-hop Tuple with
         N2_2hop_addr of the given 2-hop neighbor is created.  It
         becomes 'nbrdown' when the last 2-hop Tuple with N2_2hop_addr
         of the given 2-hop neighbor has been deleted.





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         This is a Derived Object estimated from the previously
         discussed Base Object, nhdpIib2HopSetPerfChanges counter.

   o  Histogram of the intervals between a change of the 'nbrup' status
      of a given 2-hop neighbor

         Returns the values that represent a histogram of intervals
         between a change of the 'nbrup' status of a given 2-hop
         neighbor.  The histogram includes all changes that have been
         made after the given time t0 and before the given time t1.

         This is a Derived Object estimated from the previously
         discussed Base Object, nhdpIib2HopSetPerfChanges counter.

6.  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.

6.1.  Relationship to the SNMPv2-MIB

   The 'system' group in the SNMPv2-MIB [RFC3418] 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.

6.2.  Relationship to Routing Protocol MIBs Relying on the NHDP-MIB

   [RFC6130] allows routing protocols to rely on the neighborhood
   information that is discovered by means of HELLO message exchange.
   In order to allow for troubleshooting, fault isolation, and
   management of such routing protocols through a routing protocol MIB,
   it may be desired to align the State Group tables of the NHDP-MIB and
   the routing protocol MIB.  This is accomplished through the
   definition of two TEXTUAL-CONVENTIONS in the NHDP-MIB: the
   NeighborIfIndex and the NeighborRouterIndex.  These object types are
   used to develop indexes into common NHDP-MIB and routing protocol
   State Group tables.  These objects are locally significant but should
   be locally common to the NHDP-MIB and the routing protocol MIB
   implemented on a common networked router.  This will allow for
   improved cross referencing of information across the two MIBs.





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6.3.  MIB Modules Required for IMPORTS

   The following NHDP-MIB module IMPORTS objects from SNMPv2-SMI
   [RFC2578], SNMPv2-TC [RFC2579], SNMPv2-CONF [RFC2580], IF-MIB
   [RFC2863], INET-ADDRESS-MIB [RFC4001], and FLOAT-TC-MIB [RFC6340].

7.  Definitions

   This section contains the MIB module defined by the specification.

NHDP-MIB DEFINITIONS ::= BEGIN

-- This MIB module defines objects for the management of the
-- NHDP [RFC6130] - The Neighborhood Discovery Protocol,
-- Clausen, T., Dearlove, C. and J. Dean, January 2011.

IMPORTS

    MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
    Counter32, Counter64, Integer32, Unsigned32, mib-2,
                 TimeTicks
                 FROM SNMPv2-SMI  --[RFC2578]

    TEXTUAL-CONVENTION, TruthValue, TimeStamp,
                 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]

    Float32TC
                 FROM FLOAT-TC-MIB  --[RFC6340]
    ;

nhdpMIB MODULE-IDENTITY
       LAST-UPDATED "201109061000Z" -- September 6, 2011
       ORGANIZATION "IETF MANET working group"
       CONTACT-INFO
       "WG E-Mail: manet@ietf.org

        WG Chairs: ian.chakeres@gmail.com



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                   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 routers
            implementing the Neighborhood Discovery Protocol
            defined in [RFC6130].

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

       -- revision
       REVISION "201109061000Z" -- September 6, 2011
       DESCRIPTION
            "The thirteenth version of this MIB module,
             published as draft-ietf-manet-nhdp-mib-10.txt.
             Removed references to the REPORT-MIB.
             Added references to RFC 6340 for the
             Float32TC Textual Convention.
            "



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       REVISION "201107281000Z" -- July 28, 2011
       DESCRIPTION
            "The twelth version of this MIB module,
             published as draft-ietf-manet-nhdp-mib-09.txt.
            "
       REVISION "201107081000Z" -- July 8, 2011
       DESCRIPTION
            "The eleventh version of this MIB module,
             published as draft-ietf-manet-nhdp-mib-08.txt.
             Clarified the use of the NeighborIfIndex and
             the NeighborRouterIndex.  Also, cleaned up
             the indexing of tables in the StateObjGroup.
            "
       REVISION "201101031000Z" -- January 3, 2011
       DESCRIPTION
            "The tenth version of this MIB module,
             published as draft-ietf-manet-nhdp-mib-07.txt.
             Added Float32TC from FLOAT-TC-MIB using this
             for representing the link quality parameters.
             Added a threshold (number) and window (time
             interval) within the nhdpNotificationsControl
             for the nhdpNbrStateChange, nhdp2HopNbrStateChange
             and nhdpIfRxBadPacket notifications.
            "
       REVISION "201011111000Z" -- November 11, 2010
       DESCRIPTION
            "The ninth version of this MIB module,
            published as draft-ietf-manet-nhdp-mib-06.txt.
            Corrected editorial issues, fixed some small
            bugs in the MIB."
       REVISION "201011081000Z" -- November 08, 2010
       DESCRIPTION
            "The eight version of this MIB module,
            published as draft-ietf-manet-nhdp-mib-05.txt.
            Cleaned up defaults and interdependence's
            between objects."
       REVISION    "201007071000Z"   -- July 07, 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.  Checked
          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.



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          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"



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    STATUS       current
    DESCRIPTION
        "An arbitrary, locally unique identifier associated with a
        virtual interface of a discovered NHDP neighbor.
        Due to the nature of the NHDP protocol, the local router
        may not know if two distinct addresses belong to the
        same interface of a neighbor or to two different
        interfaces.  As the local router gains more
        knowledge of its neighbors, its local view may change and
        this table will be updated to reflect the local router's current
        understanding associating address sets to neighbor interfaces.
        The local router identifies virtual neighbor interface through
        the receipt of address lists advertised through an
        NHDP HELLO message.

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

        The value for each discovered virtual neighbor
        interface must remain constant at least from
        one re-initialization of the entity's network management
        agent to the next re-initialization, except that
        if an application is deleted and re-created.  If the
        local router gains information associating two virtual
        interfaces on a neighbor as a common interface,
        then the agent must aggregate the two address sets to
        a single index chosen from the set of aggregated indexes,
        it must update all tables in this
        MIB which are indexed by indexes
        of type NeighborIfIndex.  It can then reuse freed
        index values following the next agent restart.

        The specific value is meaningful only within a given SNMP
        entity."
    SYNTAX       Unsigned32 (1..2147483647)


NeighborRouterIndex ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "d"
    STATUS       current
    DESCRIPTION
        "An arbitrary, locally unique identifier associated with a
        virtual discovered neighbor (one or two hop).  Due to the
        nature of the NHDP protocol, the local router may identify
        multiple virtual neighbors  which in fact are one and
        the same.  Two hop neighbors with more than one advertised
        address will exhibit this behavior.  As the
        local router's knowledge of its neighbors' topology



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        increases, the local router will be able to associate
        multiple virtual neighbor indexes into a single virtual
        neighbor index chosen from the set of aggregated indexes,
        it must update all tables in this MIB indexed by these
        indexes, and it can reuse the freed indexes following the
        next agent re-initialization.

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

        The NeighborRouterIndex defines a discovered NHDP peer
        virtual neighbor of the local router.
        The value for each discovered virtual neighbor index must remain
        constant at least from one re-initialization of the entity's
        network management agent 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 NeighborRouterIndex value must not be re-used
        until the next agent restart."
    SYNTAX       Unsigned32 (1..2147483647)



--
-- nhdpObjects
--

--    1) Configuration Objects Group
--    2) State Objects Group
--    3) 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



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      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "nhdpInterfaceTable describes the
          configuration of the interfaces of this NHDP router.
          The ifIndex is from the interfaces group
          defined in the Interfaces Group MIB.

          The objects in this table are persistent and when
          written the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "[RFC2863] - 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
         "nhdpInterfaceEntry 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
            Float32TC,
         nhdpHystRejectQuality
            Float32TC,



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         nhdpInitialQuality
            Float32TC,
         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
         "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.
         "
      DEFVAL { 2 }
   ::= { nhdpInterfaceEntry 2 }


   --
   -- Interface Parameters - Message Intervals
   --

   nhdpHelloInterval  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhpdHelloInterval corresponds to
          HELLO_INTERVAL of NHDP.



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          The following constraint applies to this
          parameter:
             nhpdHelloInterval >= nhdpHelloMinInterval"
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      DEFVAL { 2000 }
   ::= { nhdpInterfaceEntry 3 }


   nhdpHelloMinInterval  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhpdHelloMinInterval corresponds to
         HELLO_MIN_INTERVAL of NHDP."
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      DEFVAL { 500 }
   ::= { nhdpInterfaceEntry 4 }


   nhdpRefreshInterval  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhpdRefreshInterval corresponds to
         REFRESH_INTERVAL of NHDP.

         The following constraint applies to this
         parameter:
             nhdpRefreshInterval >= nhdpHelloInterval"
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      DEFVAL { 2000 }
   ::= { nhdpInterfaceEntry 5 }

   --
   -- Interface Parameters - Information Validity times
   --

   nhdpLHoldTime  OBJECT-TYPE



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      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpLHoldTime corresponds to
         L_HOLD_TIME of NHDP."
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      DEFVAL { 6000 }
   ::= { nhdpInterfaceEntry 6 }

   nhdpHHoldTime  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpHHoldTime corresponds to
         H_HOLD_TIME of NHDP.

         This object is persistent and when written
         the entity SHOULD save the change to
         non-volatile storage."
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      DEFVAL { 6000 }
   ::= { nhdpInterfaceEntry 7 }

   --
   -- Interface Parameters - Link Quality
   -- (is optional and settings define operation)
   --

   nhdpHystAcceptQuality  OBJECT-TYPE
      SYNTAX      Float32TC
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpHystAcceptQuality corresponds to
         HYST_ACCEPT of NHDP.

          The following constraint applies to this
          parameter:
              0 <= nhdpHystRejectQuality
                <= nhdpHystAcceptQuality <= 1.0"



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      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      -- DEFVAL { 1.0 }
   ::= { nhdpInterfaceEntry 8 }

   nhdpHystRejectQuality  OBJECT-TYPE
      SYNTAX      Float32TC
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpHystRejectQuality corresponds to
         HYST_REJECT of NHDP.

          The following constraint applies to this
          parameter:
              0 <= nhdpHystRejectQuality
                <= nhdpHystAcceptQuality <= 1.0"
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      -- DEFVAL { 0.0 }
   ::= { nhdpInterfaceEntry 9 }

   nhdpInitialQuality  OBJECT-TYPE
      SYNTAX      Float32TC
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpInitialQuality corresponds to
         INITIAL_QUALITY of NHDP.

          The following constraint applies to this
          parameter:
              0 <= nhdpInitialQuality <= 1.0"
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      -- DEFVAL { 1.0 }
   ::= { nhdpInterfaceEntry 10 }



   nhdpInitialPending  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION



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         "nhdpInitialPending corresponds to
         INITIAL_PENDING of NHDP.

         The following constraints apply to this parameter:

         If INITIAL_QUALITY >= HYST_ACCEPT,
         then INITIAL_PENDING := false.

         If INITIAL_QUALITY < HYST_REJECT,
         then INITIAL_PENDING := true."
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      DEFVAL { 2 }   -- i.e. false
   ::= { nhdpInterfaceEntry 11 }

   --
   -- Interface Parameters - Jitter
   --
   nhdpHpMaxJitter  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpHpMaxJitter corresponds to
         HP_MAXJITTER of NHDP.

         For constraints on this object, refer
         to Section 5.4 of [RFC5148]."
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."
      DEFVAL { 500 }
   ::= { nhdpInterfaceEntry 12 }


   nhdpHtMaxJitter  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpHtMaxJitter corresponds to
         HT_MAXJITTER of NHDP."
      REFERENCE
         "Section 5 on Protocol Parameters and
          Constraints of [RFC6130]."



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      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
         "[RFC6130]."
   ::= { nhdpInterfaceEntry 14 }


   --
   -- Router Parameters - Information Validity Time
   --
   nhdpNHoldTime  OBJECT-TYPE
      SYNTAX      Unsigned32
      UNITS       "milliseconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpNHoldTime corresponds to
         N_HOLD_TIME of NHDP.

          This object is persistent and when written
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "[RFC6130].
          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



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         "nhdpIHoldTime corresponds to
         I_HOLD_TIME of NHDP.

          This object is persistent and when written
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "[RFC6130].
          Section 5 on Protocol Parameters and
          Constraints."
      DEFVAL { 6000 }
   ::= { nhdpConfigurationObjGrp 3 }


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

    -- Local Interface Set Table
    -- Entry (foreach local interface): (IfNetAddrs, Is_manet)

    nhdpLibLocalIfSetTable OBJECT-TYPE
       SYNTAX       SEQUENCE OF NhdpLibLocalIfSetEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
          "A router's Local Interface Set records all
           network addresses which are defined as local
           interface network addresses.  The local interface
           is defined by the nhdpIfIndex.

           It consists of Local Interface Address Tuples
           per network interface and their prefix lengths (in
           order to determine the network addresses related to
           the interface) and an indication of whether the
           interface is a MANET interface or not.

           Further guidance on the addition or removal of
           local addresses and network addresses is found
           in Section 9 of [RFC6130]."
       REFERENCE
          "[RFC6130]."
    ::= { nhdpConfigurationObjGrp 4 }

    nhdpLibLocalIfSetEntry  OBJECT-TYPE
       SYNTAX      NhdpLibLocalIfSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "A router's Local Interface Set consists



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           of Configured Interface Address Tuples foreach network
           interface, and an indication of whether the interface
           is a MANET interface or not.

           (IR_local_iface_addr, IR_time)
          "
       REFERENCE
          "[RFC6130]."
       INDEX { nhdpIfIndex }
    ::= { nhdpLibLocalIfSetTable 1 }

    NhdpLibLocalIfSetEntry ::=
       SEQUENCE {
          nhdpLibLocalIfSetIpAddrType
            InetAddressType,
          nhdpLibLocalIfSetIpAddr
            InetAddress,
          nhdpLibLocalIfSetIpAddrPrefixLen
            InetAddressPrefixLength,
          nhdpLibLocalIfSetIsManet
            TruthValue
         }

   nhdpLibLocalIfSetIpAddrType  OBJECT-TYPE
      SYNTAX      InetAddressType
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The type of the nhdpLibLocalIfSetIpAddr
          in the InetAddress MIB [RFC4001]."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpLibLocalIfSetEntry 1 }

   nhdpLibLocalIfSetIpAddr  OBJECT-TYPE
      SYNTAX      InetAddress
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "nhdpLibLocalIfSetAddr is an
          address of an interface of
          this router."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpLibLocalIfSetEntry 2 }

   nhdpLibLocalIfSetIpAddrPrefixLen  OBJECT-TYPE
      SYNTAX      InetAddressPrefixLength



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      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "Indicates the number of leading one bits that
          form the mask.  The mask is logically-ANDed
          to the nhdpLibLocalIfSetIpAddr to determine
          the address prefix.  A row match is true
          if the address used as an index falls within
          the network address range defined by the
          address prefix."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpLibLocalIfSetEntry 3 }

     nhdpLibLocalIfSetIsManet  OBJECT-TYPE
        SYNTAX      TruthValue
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
           "Specifies whether this interface is
            a MANET interface or not."
        REFERENCE
           "[RFC6130]."
     ::= { nhdpLibLocalIfSetEntry 4 }



    -- Removed Interface Addr Set Table
    -- Entry (foreach removed network 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
          "[RFC6130]."
    ::= { nhdpConfigurationObjGrp 5 }

    nhdpLibRemovedIfAddrSetEntry  OBJECT-TYPE



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       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 address table
          (RFC1213)."
       REFERENCE
          "[RFC6130]."
       INDEX { nhdpLibRemovedIfAddrSetIpAddrType,
               nhdpLibRemovedIfAddrSetIpAddr }
    ::= { nhdpLibRemovedIfAddrSetTable 1 }

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

   nhdpLibRemovedIfAddrSetIpAddrType  OBJECT-TYPE
      SYNTAX      InetAddressType
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The type of the nhdpLibRemovedIfAddrSetIpAddr
          in the InetAddress MIB [RFC4001]."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpLibRemovedIfAddrSetEntry 1 }

   nhdpLibRemovedIfAddrSetIpAddr  OBJECT-TYPE
      SYNTAX      InetAddress
      MAX-ACCESS  read-only



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      STATUS      current
      DESCRIPTION
         "nhdpLibRemovedIfAddrSetAddr is a
          recently used address of an interface of
          this router."
      REFERENCE
         "[RFC6130]."
   ::= { 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.  The mask is logically-ANDed
          to the nhdpLibRemovedIfAddrSetIpAddr to determine
          the address prefix.  A row match is true
          if the address used as an index falls within
          the network address range defined by the
          address prefix."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpLibRemovedIfAddrSetEntry 3 }


     nhdpLibRemovedIfAddrSetIfIndex  OBJECT-TYPE
        SYNTAX      InterfaceIndexOrZero
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
           "Specifies the local IfIndex from which this
            IP address was recently removed."
        REFERENCE
           "[RFC6130]."
     ::= { nhdpLibRemovedIfAddrSetEntry 4 }

     nhdpLibRemovedIfAddrSetIrTime  OBJECT-TYPE
        SYNTAX      TimeStamp
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
           "Specifies when this Tuple expires and MUST be removed
            from this table."
        REFERENCE
           "[RFC6130]."
     ::= { nhdpLibRemovedIfAddrSetEntry 5 }




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--
-- nhdpStateObjGrp
--

-- Contains information describing the current state of the NHDP
-- process on this device.

nhdpStateObjGrp    OBJECT IDENTIFIER ::= { nhdpObjects 2 }

   -- Two new constructs have been defined in this MIB for
   -- indexing into the following
   -- tables and indexing into other tables in other MIBs.
   -- This was necessary because the NHDP protocol manages and
   -- indexes based upon dynamic address tuples, i.e.,
   -- address sets, while SMI requires statically
   -- defined indexes for accessing its table rows.
   -- The NeighborIfIndex defines a unique (to the local router)
   -- index referencing a discovered virtual interface on another
   -- neighbor within the MANET. The NeighborRouterIndex defines a
   -- unique (to the local router) index referencing a discovered
   -- virtual neighbor within the MANET.
   --
   -- Due to the nature of the NHDP protocol,
   -- different indexes may be related to common neighbor
   -- interfaces or common neighbor routers, but the information
   -- obtained through NHDP has not allowed the local router
   -- to relate these virtual objects (i.e., interfaces or routers)
   -- at this point in time.  As more topology information
   -- is gathered by the local router, it may associate
   -- virtual interfaces or routers and collapse these
   -- indexes appropriately.

   -- Multiple addresses can be associated with a
   -- given NeighborIfIndex.  Each NeighborIfIndex is
   -- associated with a NeighborRouterIndex.  Throughout
   -- the nhdpStateObjGroup, the
   -- NeighborIfIndex and the NeighborRouterIndex are used
   -- to define the set of IpAddrs related to a virtual
   -- neighbor interface or virtual neighbor under 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



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          "[RFC6130]."
    ::= { nhdpStateObjGrp 1 }


   nhdpInterfaceStateTable  OBJECT-TYPE
      SYNTAX      SEQUENCE OF NhdpInterfaceStateEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "nhdpInterfaceStateTable lists state information
          related to specific interfaces of this NHDP router.
          The ifIndex is from the interfaces group
          defined in the Interfaces Group MIB.

          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."
   ::= { nhdpStateObjGrp 2 }

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

   NhdpInterfaceStateEntry ::=
      SEQUENCE {
         nhdpIfStateUpTime
            TimeTicks
         }

   nhdpIfStateUpTime  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."
   ::= { nhdpInterfaceStateEntry 1 }



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   --
   -- Interface Parameters - Message Intervals
   --

   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
          "[RFC6130]."
    ::= { nhdpStateObjGrp 3 }


    nhdpDiscIfSetEntry  OBJECT-TYPE
       SYNTAX      NhdpDiscIfSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The entries include the nhdpDiscRouterIndex of
           the discovered router, the nhdpDiscIfIndex
           of the discovered interface and the
           current set of addresses associated
           with this neighbor interface.  The
           nhdpDiscIfIndex uniquely identifies
           the remote interface address sets
           through this table.  It does not need
           to be unique across the MANET, but must
           be locally unique within this router."
       REFERENCE
          "[RFC6130]."
       INDEX { nhdpDiscIfSetIndex }
    ::= { nhdpDiscIfSetTable 1 }

    NhdpDiscIfSetEntry ::=
       SEQUENCE {
          nhdpDiscIfSetIndex
            Integer32,
          nhdpDiscIfIndex
            NeighborIfIndex,
          nhdpDiscRouterIndex
            NeighborRouterIndex,
          nhdpDiscIfSetIpAddrType
            InetAddressType,
          nhdpDiscIfSetIpAddr
            InetAddress,



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          nhdpDiscIfSetIpAddrPrefixLen
            InetAddressPrefixLength
         }

   nhdpDiscIfSetIndex  OBJECT-TYPE
      SYNTAX      Integer32 (0..65535)
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The index for this table.  Necessary
          because multiple addresses may be associated
          with a given nhdpDiscIfIndex."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpDiscIfSetEntry 1 }

   nhdpDiscIfIndex  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
         "[RFC6130]."
   ::= { nhdpDiscIfSetEntry 2 }

   nhdpDiscRouterIndex  OBJECT-TYPE
      SYNTAX      NeighborRouterIndex
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The NHDP neighbor index (locally created)
          of a neighboring router.  Used for cross
          indexing into other NHDP tables and other
          MIBs."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpDiscIfSetEntry 3 }

   nhdpDiscIfSetIpAddrType  OBJECT-TYPE
      SYNTAX      InetAddressType
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The type of the nhdpDiscIfSetIpAddr



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          in the InetAddress MIB [RFC4001]."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpDiscIfSetEntry 4 }

   nhdpDiscIfSetIpAddr  OBJECT-TYPE
      SYNTAX      InetAddress
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The nhdpDiscIfSetIpAddr is a
          recently used address of a neighbor
          of this router."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpDiscIfSetEntry 5 }

   nhdpDiscIfSetIpAddrPrefixLen  OBJECT-TYPE
      SYNTAX      InetAddressPrefixLength
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "Indicates the number of leading one bits that
          form the mask.  The mask is logically-ANDed
          to the nhdpDiscIfSetIpAddr to determine
          the address prefix.  A row match is true
          if the address used as an index falls within
          the network address range defined by the
          address prefix."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpDiscIfSetEntry 6 }


   -- Interface Information Base (IIB)

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

   --     IIB Link Set
   --         Entry (foreach discovered link to a
   --                        1-H neighbor): (NeighborIfAddrList,
   --                                        HeardTime,
   --                                        SymTime,
   --                                        Quality,
   --                                        Pending,
   --                                        Lost,



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   --                                        ExpireTime)

   nhdpIibLinkSetTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF NhdpIibLinkSetEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
          "A Link Set of an interface records all links
           from other routers which are, or recently
           were, 1-hop neighbors."
      REFERENCE
         "[RFC6130]."
   ::= { 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).

            Note that L_quality is not included in the
            entries below, because updates may be
            required too frequently."
       REFERENCE
          "[RFC6130]."
       INDEX { nhdpIfIndex,
               nhdpDiscIfIndex }
    ::= { nhdpIibLinkSetTable 1 }

    NhdpIibLinkSetEntry ::=
       SEQUENCE {
          nhdpIibLinkSetLHeardTime
            TimeStamp,
          nhdpIibLinkSetLSymTime
            TimeStamp,
          nhdpIibLinkSetLPending
            TruthValue,
          nhdpIibLinkSetLLost
            TruthValue,
          nhdpIibLinkSetLTime
            TimeStamp



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         }

   nhdpIibLinkSetLHeardTime  OBJECT-TYPE
      SYNTAX      TimeStamp
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "nhdpIibLinkSetLHeardTime corresponds
         to L_HEARD_time of NHDP."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIibLinkSetEntry 1 }

   nhdpIibLinkSetLSymTime  OBJECT-TYPE
      SYNTAX      TimeStamp
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "nhdpIibLinkSetLSymTime corresponds
         to L_SYM_time of NHDP."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIibLinkSetEntry 2 }

   nhdpIibLinkSetLPending  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "nhdpIibLinkSetLPending corresponds
         to L_pending of NHDP"
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIibLinkSetEntry 3 }

   nhdpIibLinkSetLLost  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "nhdpIibLinkSetLLost corresponds
         to L_lost of NHDP"
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIibLinkSetEntry 4 }

   nhdpIibLinkSetLTime  OBJECT-TYPE
      SYNTAX      TimeStamp



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      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "nhdpIibLinkSetLTime specifies
          when this Tuple expires and MUST
          be removed."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIibLinkSetEntry 5 }


  --
  --     IIB 2-Hop Set
  --         Entry (foreach discovered 2-H neighbor
  --                network address): (1HopNeighIfAddrList,
  --                                   2HopNeighNetworkAddr,
  --                                   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
          "[RFC6130]."
    ::= { nhdpStateObjGrp 5 }

    nhdpIib2HopSetEntry  OBJECT-TYPE
       SYNTAX      NhdpIib2HopSetEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The entries include the 2-hop neighbor addresses,
           which act as the table index, and associated
           1-hop symmetric link address set, designated
           through nhdpDiscIfIndex, and an expiration time.
           The nhdpIfIndex in the INDEX is



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           interface index of the local interface
           through which these 2-hop addresses are
           accessible."
       REFERENCE
          "[RFC6130]."
       INDEX { nhdpIfIndex,
               nhdpIib2HopSetIpAddressType,
               nhdpIib2HopSetIpAddress }
    ::= { nhdpIib2HopSetTable 1 }

    NhdpIib2HopSetEntry ::=
       SEQUENCE {
          nhdpIib2HopSetIpAddressType
            InetAddressType,
          nhdpIib2HopSetIpAddress
            InetAddress,
          nhdpIib2HopSetIpAddrPrefixLen
            InetAddressPrefixLength,
          nhdpIib2HopSet1HopIfIndex
            NeighborIfIndex,
          nhdpIib2HopSetN2Time
            TimeStamp
         }

   nhdpIib2HopSetIpAddressType  OBJECT-TYPE
      SYNTAX      InetAddressType
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The type of the nhdpIib2HopSetIpAddress
          in the InetAddress MIB [RFC4001]."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIib2HopSetEntry 1 }

   nhdpIib2HopSetIpAddress  OBJECT-TYPE
      SYNTAX      InetAddress
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "nhdpIib2HopSetIpAddr corresponds
         to N2_2hop_addr of NHDP."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIib2HopSetEntry 2 }

   nhdpIib2HopSetIpAddrPrefixLen  OBJECT-TYPE
      SYNTAX      InetAddressPrefixLength



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      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "Indicates the number of leading one bits that
          form the mask.  The mask is logically-ANDed
          to the nhdpIib2HopSetIpAddress to determine
          the address prefix.  A row match is true
          if the address used as an index falls within
          the network address range defined by the
          address prefix."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIib2HopSetEntry 3 }

   nhdpIib2HopSet1HopIfIndex  OBJECT-TYPE
      SYNTAX      NeighborIfIndex
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "nhdpIib2HopSet1HopIfIndex is
          nhdpDiscIfIndex of the 1-hop
          neighbor which communicated the ipAddress
          of the 2-hop neighbor in this row entry."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIib2HopSetEntry 4 }

   nhdpIib2HopSetN2Time  OBJECT-TYPE
      SYNTAX      TimeStamp
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "nhdpIib2HopSetN2Time specifies
          when this column entry expires and
          MUST be removed."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpIib2HopSetEntry 5 }


   --
   -- Neighbor Information Base (NIB)
   --
   -- Each router maintains a Neighbor Information Base
   -- that records information about addresses of
   -- current and recently symmetric 1-hop neighbors.





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   --     NIB Neighbor Set
   --         Entry (foreach discovered 1-hop neighbor:
   --                N_neighbor_addr_list, N_symmetric)
   --     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
         "[RFC6130]."
   ::= { 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)

           Neighbor tuples are removed from the
           neighbor set only when the
           corresponding link tuples expire from
           the Link Set table."
      REFERENCE
         "[RFC6130]."
      INDEX { nhdpDiscRouterIndex }
   ::= { nhdpNibNeighborSetTable 1 }

    NhdpNibNeighborSetEntry ::=
       SEQUENCE {
          nhdpNibNeighborSetNSymmetric
            TruthValue
         }

   nhdpNibNeighborSetNSymmetric  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only



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      STATUS      current
      DESCRIPTION
         "nhdpNibNeighborNSymmetric corresponds
         to N_symmetric of NHDP."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpNibNeighborSetEntry 1 }



  --     Lost Neighbor Set
  --         Entry ( foreach recently lost
  --                 1-hop neighbor router):
  --                          (NL_neighbor_addrs, NL_time)
  --
    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
          "[RFC6130]."
    ::= { 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
          "[RFC6130]."
       INDEX { nhdpDiscRouterIndex }
    ::= { nhdpNibLostNeighborSetTable 1 }

    NhdpNibLostNeighborSetEntry ::=
       SEQUENCE {
          nhdpNibLostNeighborSetNLTime
            TimeStamp
         }



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   nhdpNibLostNeighborSetNLTime  OBJECT-TYPE
      SYNTAX      TimeStamp
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "nhdpNibLostNeighborSetNLTime
          specifies when this Tuple expires
          and MUST be removed."
      REFERENCE
         "[RFC6130]."
   ::= { 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
         "[RFC6130]."
   ::= { 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 }




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   NhdpInterfacePerfEntry ::=
      SEQUENCE {
         nhdpIfHelloMessageXmits
            Counter32,
         nhdpIfHelloMessageRecvd
            Counter32,
         nhdpIfHelloMessageXmitAccumulatedSize
            Counter64,
         nhdpIfHelloMessageRecvdAccumulatedSize
            Counter64,
         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      Counter64
      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."



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   ::= { nhdpInterfacePerfEntry 3 }

   nhdpIfHelloMessageRecvdAccumulatedSize  OBJECT-TYPE
      SYNTAX      Counter64
      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."



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   ::= { 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
          "[RFC6130]."
   ::= { 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
          "[RFC6130]."
       INDEX { nhdpDiscIfIndex }
   ::= { nhdpDiscIfSetPerfTable 1 }

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



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   nhdpDiscIfRecvdPackets  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This counter increments each
         time this router receives a packet from that interface
         of the neighbor."
      REFERENCE
         "[RFC6130]."
   ::= { 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
          router receives a packet from that interface
          of the neighbor."
      REFERENCE
         "[RFC6130]."
   ::= { 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



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      SYNTAX       SEQUENCE OF NhdpDiscNeighborSetPerfEntry
       MAX-ACCESS   not-accessible
       STATUS       current
       DESCRIPTION
          "A router's set of discovered neighbors and
           their properties."
       REFERENCE
          "[RFC6130]."
   ::= { nhdpPerformanceObjGrp 4 }

   nhdpDiscNeighborSetPerfEntry  OBJECT-TYPE
       SYNTAX      NhdpDiscNeighborSetPerfEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
          "The entries include the nhdpDiscRouterIndex of
           the discovered router, as well as performance
           objects related to changes of the Neighbor
           Set."
       REFERENCE
          "[RFC6130]."
       INDEX { nhdpDiscRouterIndex }
   ::= { nhdpDiscNeighborSetPerfTable 1 }

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

   nhdpDiscNeighborNibNeighborSetChanges  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This object returns the number of changes
         to the given Neighbor Tuple."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpDiscNeighborSetPerfEntry 1 }


   nhdpDiscNeighborNibNeighborSetUpTime  OBJECT-TYPE
      SYNTAX      TimeTicks



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      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This object returns the time in hundredths of a second since
         the neighbor becomes 'nbrup'.  A neighbor is
         said to become 'nbrup' if a new nhdpNibNeighborSetEntry
         is created for a particular nhdpNibNeighborSetRouterIndex.
         It becomes 'nbrdown' if the entry for that neighbor
         has been deleted."
      REFERENCE
         "[RFC6130]."
   ::= { nhdpDiscNeighborSetPerfEntry 2 }

   nhdpDiscNeighborNibNeighborSetReachableLinkChanges  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This object counts each time the neighbor changes
          the interface(s) over which it is reachable.
          A change in the set of Link Tuples corresponding
          to the appropriate Neighbor Tuple is registered,
          i.e. a corresponding Link Tuple is added or removed
          from the set of all corresponding Link Tuples."
      REFERENCE
         "[RFC6130]."
   ::= { 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
          "[RFC6130]."
    ::= { nhdpPerformanceObjGrp 5 }

    nhdpIib2HopSetPerfEntry  OBJECT-TYPE
       SYNTAX      NhdpIib2HopSetPerfEntry
       MAX-ACCESS  not-accessible



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       STATUS      current
       DESCRIPTION
          "The entries contain performance objects per
           discovered 2-hop neighbor."
       REFERENCE
          "[RFC6130]."
       INDEX { nhdpDiscRouterIndex }
    ::= { nhdpIib2HopSetPerfTable 1 }

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

   nhdpIib2HopSetPerfChanges  OBJECT-TYPE
      SYNTAX      Counter32
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "This object counts the changes of the union of all
         N2_neighbor_iface_addr_list of 2-Hop Tuples with an
         N2_2hop_addr equal to one of the given 2-hop
         neighbor's addresses."
      REFERENCE
         "[RFC6130]."
   ::= { 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
         "[RFC6130]."
   ::= { nhdpIib2HopSetPerfEntry 2 }








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--
-- 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 object is used to enable
             and disable specific 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 }

   nhdpNbrStateChangeThreshold OBJECT-TYPE
          SYNTAX       Integer32 (0..255)
          MAX-ACCESS   read-write
          STATUS       current
          DESCRIPTION
             "A threshold value for the
              nhdpNbrStateChange object.  If the
              number of occurrences exceeds this threshold
              within the previous nhdpNbrStateChangeWindow,
              then the nhdpNbrStateChange notification
              is to be sent.
             "
           ::= { nhdpNotificationsControl 2 }

   nhdpNbrStateChangeWindow OBJECT-TYPE
          SYNTAX       TimeTicks
          MAX-ACCESS   read-write
          STATUS       current



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          DESCRIPTION
             "A time window for the
              nhdpNbrStateChange object.  If the
              number of occurrences exceeds the
              nhdpNbrStateChangeThreshold
              within the previous nhdpNbrStateChangeWindow,
              then the nhdpNbrStateChange notification
              is to be sent.

              This object represents the time in hundredths
              of a second.
             "
           ::= { nhdpNotificationsControl 3 }

   nhdp2HopNbrStateChangeThreshold OBJECT-TYPE
          SYNTAX       Integer32 (0..255)
          MAX-ACCESS   read-write
          STATUS       current
          DESCRIPTION
             "A threshold value for the
              nhdp2HopNbrStateChange object.  If the
              number of occurrences exceeds this threshold
              within the previous nhdp2HopNbrStateChangeWindow,
              then the nhdp2HopNbrStateChange notification
              is to be sent.
             "
           ::= { nhdpNotificationsControl 4 }

   nhdp2HopNbrStateChangeWindow OBJECT-TYPE
          SYNTAX       TimeTicks
          MAX-ACCESS   read-write
          STATUS       current
          DESCRIPTION
             "A time window for the
              nhdp2HopNbrStateChange object.  If the
              number of occurrences exceeds the
              nhdp2HopNbrStateChangeThreshold
              within the previous nhdp2HopNbrStateChangeWindow,
              then the nhdp2HopNbrStateChange notification
              is to be sent.

              This object represents the time in hundredths
              of a second.
             "
           ::= { nhdpNotificationsControl 5 }

   nhdpIfRxBadPacketThreshold OBJECT-TYPE
          SYNTAX       Integer32 (0..255)



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          MAX-ACCESS   read-write
          STATUS       current
          DESCRIPTION
             "A threshold value for the
              nhdpIfRxBadPacket object.  If the
              number of occurrences exceeds this threshold
              within the previous nhdpIfRxBadPacketWindow,
              then the nhdpIfRxBadPacket notification
              is to be sent.
             "
           ::= { nhdpNotificationsControl 6 }

   nhdpIfRxBadPacketWindow OBJECT-TYPE
          SYNTAX       TimeTicks
          MAX-ACCESS   read-write
          STATUS       current
          DESCRIPTION
             "A time window for the
              nhdpIfRxBadPacket object.  If the
              number of occurrences exceeds the
              nhdpIfRxBadPacketThreshold
              within the previous nhdpIfRxBadPacketWindow,
              then the nhdpIfRxBadPacket notification
              is to be sent.

              This object represents the time in hundredths
              of a second.
             "
           ::= { nhdpNotificationsControl 7 }


   -- nhdpNotificationsObjects

   nhdpNbrStateChange NOTIFICATION-TYPE
          OBJECTS { nhdpIfIndex,  -- The originator of
                                  --     the notification.
                    nhdpNbrState  -- The new state
                  }
          STATUS       current
          DESCRIPTION
             "nhdpNbrStateChange is a notification sent when a
             significant number of neighbors change their status
             (i.e. down, asymmetric, or symmetric) in a short
             time. The network administrator should select
             appropriate values for 'significant number of
             neighbors' and 'short time'."
          ::= { nhdpNotificationsObjects 1 }




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    nhdp2HopNbrStateChange NOTIFICATION-TYPE
          OBJECTS { nhdpIfIndex,      -- The originator
                                      -- of the notification
                    nhdp2HopNbrState  -- The new state
             }
          STATUS       current
          DESCRIPTION
             "nhdp2HopNbrStateChange is a notification sent
             when a significant number of 2-hop neighbors
             change their status (i.e. up or down) in a short
             time. The network administrator should select
             appropriate values for 'significant number of
             neighbors' and 'short time'."
          ::= { nhdpNotificationsObjects 2 }

   nhdpIfRxBadPacket NOTIFICATION-TYPE
          OBJECTS { nhdpDiscRouterIndex, -- The originator of
                                         -- the notification
                    nhdpIfIndex,         -- The interface on which the
                                         -- packet has been received
                    nhdpPacketSrcType,   -- The type of the source IP
                                         -- address of the packet
                    nhdpPacketSrc        -- The source IP address of
                                         -- the packet
             }
          STATUS       current
          DESCRIPTION
             "nhdpIfRxBadPacket is a notification sent when a
             significant number of incoming packets have not
             been successfully parsed in a short time. The
             network administrator should select appropriate
             values for 'significant number of neighbors'
             and 'short time'."
          ::= { nhdpNotificationsObjects 3 }


   nhdpIfStateChange NOTIFICATION-TYPE
          OBJECTS { nhdpIfIndex, -- The local interface
                    nhdpIfState  -- The new state
             }
          STATUS       current
          DESCRIPTION
             "nhdpIfStateChange is a notification sent when
             the status of an interface of this router has
             changed (i.e. an IP address has been added or
             removed to the interface, or the interface has
             changed its status from up to down or vice versa)."
          ::= { nhdpNotificationsObjects 4 }



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    -- 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 2-hop 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 }

  nhdpPacketSrcType OBJECT-TYPE
            SYNTAX InetAddressType
            MAX-ACCESS read-only
            STATUS current
            DESCRIPTION
            "The IP address type of the



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            address of an inbound packet that
            cannot be identified by a neighbor instance."
            ::= { nhdpNotificationsStates 4 }

   nhdpPacketSrc OBJECT-TYPE
          SYNTAX       InetAddress
          MAX-ACCESS   read-only
          STATUS       current
          DESCRIPTION
             "The IP address of an inbound packet 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."
          ::= { nhdpNotificationsStates 5 }




--
-- 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."



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  MODULE -- this module

  MANDATORY-GROUPS { nhdpConfigurationGroup,
                     nhdpStateGroup,
                     nhdpPerformanceGroup,
                     nhdpNotificationObjectGroup,
                     nhdpNotificationGroup,
                     nhdpPerformanceGroup }

  ::= { nhdpCompliances 2 }


--
-- Units of Conformance
--

  nhdpConfigurationGroup OBJECT-GROUP
     OBJECTS {
              nhdpIfStatus,
              nhdpHelloInterval,
              nhdpHelloMinInterval,
              nhdpRefreshInterval,
              nhdpLHoldTime,
              nhdpHHoldTime,
              nhdpHystAcceptQuality,
              nhdpHystRejectQuality,
              nhdpInitialQuality,
              nhdpInitialPending,
              nhdpHpMaxJitter,
              nhdpHtMaxJitter,
              nhdpNHoldTime,
              nhdpIHoldTime,
              nhdpIfRowStatus,
              nhdpLibLocalIfSetIpAddrType,
              nhdpLibLocalIfSetIpAddr,
              nhdpLibLocalIfSetIpAddrPrefixLen,
              nhdpLibLocalIfSetIsManet,
              nhdpLibRemovedIfAddrSetIpAddrType,
              nhdpLibRemovedIfAddrSetIpAddr,
              nhdpLibRemovedIfAddrSetIpAddrPrefixLen,
              nhdpLibRemovedIfAddrSetIfIndex,
              nhdpLibRemovedIfAddrSetIrTime
             }
      STATUS  current
      DESCRIPTION
         "Set of NHDP configuration objects implemented
          in this module."
   ::= { nhdpMIBGroups 2 }



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  nhdpStateGroup OBJECT-GROUP
     OBJECTS {
              nhdpUpTime,
              nhdpIfIndex,
              nhdpIfStateUpTime,
              nhdpDiscRouterIndex,
              nhdpDiscIfIndex,
              nhdpDiscIfSetIpAddrType,
              nhdpDiscIfSetIpAddr,
              nhdpDiscIfSetIpAddrPrefixLen,
              nhdpIibLinkSetLHeardTime,
              nhdpIibLinkSetLSymTime,
              nhdpIibLinkSetLPending,
              nhdpIibLinkSetLLost,
              nhdpIibLinkSetLTime,
              nhdpIib2HopSetIpAddrPrefixLen,
              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



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      DESCRIPTION
         "Set of NHDP performance objects implemented
          in this module."
   ::= { nhdpMIBGroups 4 }

    nhdpNotificationObjectGroup OBJECT-GROUP
      OBJECTS {
            nhdpSetNotification,
            nhdpNbrStateChangeThreshold,
            nhdpNbrStateChangeWindow,
            nhdp2HopNbrStateChangeThreshold,
            nhdp2HopNbrStateChangeWindow,
            nhdpIfRxBadPacketThreshold,
            nhdpIfRxBadPacketWindow,
            nhdpIfState,
            nhdpNbrState,
            nhdp2HopNbrState,
            nhdpPacketSrcType,
            nhdpPacketSrc
      }
      STATUS current
      DESCRIPTION
      "Set of NHDP notification objects implemented
      in this module."
   ::= { nhdpMIBGroups 5 }



  nhdpNotificationGroup NOTIFICATION-GROUP
     NOTIFICATIONS {
             nhdpNbrStateChange,
             nhdp2HopNbrStateChange,
             nhdpIfRxBadPacket,
             nhdpIfStateChange
             }
      STATUS  current
      DESCRIPTION
         "Set of NHDP notifications implemented
          in this module."
   ::= { nhdpMIBGroups 6 }


END








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8.  Security Considerations

   This MIB defines objects for the configuration, monitoring and
   notification of the Neighborhood Discovery Protocol [RFC6130].  NHDP
   allows routers to acquire topological information up to two hops away
   by virtue of exchanging HELLO messages.  The information acquired by
   NHDP may be used by routing 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:

   o  nhdpIfStatus - this writable object turns on or off the NHDP
      process for the specified interface.  If disabled, higher level
      protocol functions, e.g., routing, would fail causing network-wide
      disruptions.

   o  nhdpHelloInterval, nhdpHelloMinInterval, and nhdpRefreshInterval -
      these writable objects control the rate at which HELLO messages
      are sent on a wireless interface.  If set at too high a rate, this
      could represent a form of DOS attack by overloading interface
      resources.

   o  nhdpHystAcceptQuality, nhdpHystRejectQuality, nhdpInitialQuality,
      nhdpInitialPending - these writable objects affect the perceived
      quality of the NHDP links and hence the overall stability of the
      network.  If improperly set, these settings could result in
      network-wide disruptions.

   o  nhdpInterfaceTable - this table contains writable objects that
      affect the overall performance and stability of the NHDP process.
      Failure of the NHDP process would result in network-wide failure.
      Particularly sensitive objects from this table are discussed in
      the previous list items.  This is the only table in the NHDP-MIB
      with writable objects.

   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



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   the network via SNMP.  These are the tables and objects and their
   sensitivity/vulnerability:

   o  nhdpDiscIfSetTable - The contains information on discovered
      neighbors, specifically their IP address in the
      nhdpDiscIfSetIpAddr object.  This information provides an
      adversary broad information on the members of the MANET, located
      within this single table.  This information can be use to expedite
      attacks on the other members of the MANET without having to go
      through a laborious discovery process on their own.  This object
      is the index into the table, and has a MAX-ACCESS of 'not-
      accessible'.  However, this information can be exposed using SNMP
      operations.

   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], 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.

9.  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



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   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.

10.  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.

11.  Acknowledgements

   The authors wish to thank Thomas Clausen and Justin Dean for their
   detailed reviews and insightful comments to this document.

12.  References

12.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2578]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Structure of Management Information
              Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

   [RFC2579]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Textual Conventions for SMIv2",
              STD 58, RFC 2579, April 1999.

   [RFC2580]  McCloghrie, K., Perkins, D., and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999.

   [RFC2863]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group
              MIB", RFC 2863, June 2000.

   [RFC3418]  Presuhn, R., "Management Information Base (MIB) for the
              Simple Network Management Protocol (SNMP)", STD 62,
              RFC 3418, December 2002.

   [RFC4001]  Daniele, M., Haberman, B., Routhier, S., and J.
              Schoenwaelder, "Textual Conventions for Internet Network
              Addresses", RFC 4001, February 2005.

   [RFC6130]  Clausen, T., Dearlove, C., and J. Dean, "Mobile Ad Hoc
              Network (MANET) Neighborhood Discovery Protocol (NHDP)",



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              RFC 6130, April 2011.

   [RFC6340]  Presuhn, R., "Textual Conventions for the Representation
              of Floating-Point Numbers", RFC 6340, August 2011.

12.2.  Informative References

   [RFC3410]  Case, J., Mundy, R., Partain, D., and B. Stewart,
              "Introduction and Applicability Statements for Internet-
              Standard Management Framework", RFC 3410, December 2002.

   [RFC4750]  Joyal, D., Galecki, P., Giacalone, S., Coltun, R., and F.
              Baker, "OSPF Version 2 Management Information Base",
              RFC 4750, December 2006.

Appendix A.


   ***************************************************************
   * Note to the RFC Editor (to be removed prior to publication) *
   *                                                             *
   * 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.                                 *
   *                                                             *
   ***************************************************************

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
   6010 Frankford Road, Bldg 6010
   Aberdeen Proving Ground, Maryland  21005
   USA

   Phone: +1 443 395 8744
   EMail: robert.g.cole@us.army.mil
   URI:   http://www.cs.jhu.edu/~rgcole/




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   Ian D Chakeres
   CenGen
   9250 Bendix Road North
   Columbia, Maryland  560093
   USA

   EMail: ian.chakeres@gmail.com
   URI:   http://www.ianchak.com/











































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