





Internet Engineering Task Force (IETF)                           R. Cole
Request for Comments: 7367                                US Army CERDEC
Category: Experimental                                         J. Macker
ISSN: 2070-1721                                               B. Adamson
                                               Naval Research Laboratory
                                                            October 2014


  Definition of Managed Objects for the Mobile Ad Hoc Network (MANET)
            Simplified Multicast Framework Relay Set Process

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes objects for configuring aspects of the
   Simplified Multicast Forwarding (SMF) process for Mobile Ad Hoc
   Networks (MANETs).  The SMF-MIB module also reports state
   information, performance information, and notifications.  In addition
   to configuration, the additional state and performance information is
   useful to operators troubleshooting multicast forwarding problems.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for examination, experimental implementation, and
   evaluation.

   This document defines an Experimental Protocol for the Internet
   community.  This document is a product of the Internet Engineering
   Task Force (IETF).  It represents the consensus of the IETF
   community.  It has received public review and has been approved for
   publication by the Internet Engineering Steering Group (IESG).  Not
   all documents approved by the IESG are a candidate for any level of
   Internet Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7367.












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Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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

Table of Contents

   1. Introduction ....................................................3
   2. The Internet-Standard Management Framework ......................3
   3. Conventions .....................................................3
   4. Overview ........................................................3
      4.1. SMF Management Model .......................................4
      4.2. Terms ......................................................5
   5. Structure of the MIB Module .....................................5
      5.1. Textual Conventions ........................................6
      5.2. The Capabilities Group .....................................6
      5.3. The Configuration Group ....................................6
      5.4. The State Group ............................................7
      5.5. The Performance Group ......................................7
      5.6. The Notifications Group ....................................7
      5.7. Tables and Indexing ........................................8
   6. Relationship to Other MIB Modules ...............................9
      6.1. Relationship to the SNMPv2-MIB .............................9
      6.2. Relationship to the IP-MIB .................................9
      6.3. Relationship to the IPMCAST-MIB ............................9
      6.4. MIB Modules Required for IMPORTS ..........................10
      6.5. Relationship to Future RSSA-MIB Modules ...................10
   7. SMF-MIB Definitions ............................................10
   8. IANA-SMF-MIB Definitions .......................................51
   9. Security Considerations ........................................56
   10. Applicability Statement .......................................59
   11. IANA Considerations ...........................................62
   12. References ....................................................62
      12.1. Normative References .....................................62
      12.2. Informative References ...................................64
   Acknowledgements ..................................................65
   Contributors ......................................................65
   Authors' Addresses ................................................65



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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 aspects of a
   process implementing Simplified Multicast Forwarding (SMF) [RFC6621]
   for Mobile Ad Hoc Networks (MANETs).  SMF provides multicast
   Duplicate Packet Detection (DPD) and supports algorithms for
   constructing an estimate of a MANET Minimum Connected Dominating Set
   (MCDS) for efficient multicast forwarding.  The SMF-MIB module also
   reports state information, performance information, and
   notifications.  In addition to configuration, this additional state
   and performance information is useful to operators troubleshooting
   multicast forwarding problems.

2.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
   [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 RFC
   2119 [RFC2119].

4.  Overview

   SMF provides methods for implementing DPD-based multicast forwarding
   with the optional use of CDS-based relay sets.  The CDS provides a
   complete connected coverage of the nodes comprising the MANET.  The
   MCDS is the smallest set of MANET nodes (comprising a connected
   cluster) that cover all the nodes in the cluster with their
   transmissions.  As the density of the MANET nodes increase, the
   fraction of nodes required in an MCDS decreases.  Using the MCDS as a
   multicast forwarding set then becomes an efficient multicast
   mechanism for MANETs.



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   Various algorithms for the construction of estimates of the MCDS
   exist.  The Simplified Multicast Framework [RFC6621] describes some
   of these.  It further defines various operational modes for a node
   that is participating in the collective creation of the MCDS
   estimates.  These modes depend upon the set of related MANET routing
   and discovery protocols and mechanisms in operation in the specific
   MANET node.

   A SMF router's MIB module contains SMF process configuration
   parameters (e.g., specific CDS algorithm), state information (e.g.,
   current membership in the CDS), performance counters (e.g., packet
   counters), and notifications.

4.1.  SMF Management Model

   This section describes the management model for the SMF node process.

   Figure 1 (reproduced from Figure 1 of [RFC6621]) shows the
   relationship between the SMF Relay Set Selection Algorithm and the
   related algorithms, processes, and protocols running in the MANET
   nodes.  The Relay Set Selection Algorithm (RSSA) can rely upon
   topology information acquired from the MANET Neighborhood Discovery
   Protocol (NHDP), from the specific MANET routing protocol running on
   the node, or from Layer 2 information passed up to the higher layer
   protocol processes.
       ______________                ____________
      |              |              |            |
      | Neighborhood |              | Relay Set  |
      |  Discovery   |------------->| Selection  |
      |              |   neighbor   |            |
      |______________|     info     |____________|
              \                             /
       neighbor\                           / forwarding
         info*  \      _____________      /    status
                 \    |             |    /
                  `-->| Forwarding  |<--'
                      |   Process   |
    ----------------->|_____________|----------------->
     incoming packet,                   forwarded packets
     interface id*, and
     previous hop*

              Figure 1: SMF Router Architecture

   The asterisks (*) mark the primitives and relationships needed by
   relay set algorithms requiring previous-hop packet-forwarding
   knowledge.




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4.2.  Terms

   The following definitions apply throughout this document:

   Configuration Objects:  switches, tables, and objects that are
      initialized to default settings or set through the management
      interfaces such as defined by this MIB module.

   Tunable Configuration Objects:  objects whose values affect timing or
      attempt bounds on the SMF Relay Set (RS) process.

   State Objects:  automatically generated values that define the
      current operating state of the SMF RS process in the router.

   Performance Objects:  automatically generated values that help an
      administrator or automated tool to assess the performance of the
      CDS multicast process on the router and the overall multicast
      performance within the MANET routing domain.

5.  Structure of the MIB Module

   This section presents the structure of the SMF-MIB module.  The
   objects are arranged into the following groups:

   o  smfMIBNotifications - defines the notifications associated with
      the SMF process.

   o  smfMIBObjects - defines the objects forming the basis for the SMF-
      MIB module.  These objects are divided up by function into the
      following groups:

      *  Capabilities Group - This group contains the SMF objects that
         the device uses to advertise its local capabilities with
         respect to, e.g., the supported RSSAs.

      *  Configuration Group - This group contains the SMF objects that
         configure specific options that determine the overall operation
         of the SMF process and the resulting multicast performance.

      *  State Group - Contains information describing the current state
         of the SMF process such as the Neighbor Table.

      *  Performance Group - Contains objects that help to characterize
         the performance of the SMF process, typically counters for
         statistical computations.

   o  smfMIBConformance - defines two, i.e., minimal and full,
      conformance implementations for the SMF-MIB module.



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5.1.  Textual Conventions

   The Textual Conventions defined within the SMF-MIB module:

   o  The SmfStatus is defined within the SMF-MIB module.  This contains
      the current operational status of the SMF process on an interface.

   The Textual Conventions defined for the SMF-MIB module and maintained
   by IANA are:

   o  The IANAsmfOpModeIdTC represents an index that identifies a
      specific SMF operational mode.  This Textual Convention is
      maintained by IANA in the IANA-SMF-MIB.

   o  The IANAsmfRssaIdTC represents an index that identifies, through
      reference, a specific RSSA available for operation on the device.
      This Textual Convention is maintained by IANA also in the IANA-
      SMF-MIB.

5.2.  The Capabilities Group

   The SMF device supports a set of capabilities.  The list of
   capabilities that the device can advertise is as follows:

   o  Operational Mode - topology information from NHDP, CDS-aware
      unicast routing, or Cross-layer from Layer 2.

   o  SMF RSSA - the specific RSSA operational on the device.  Note that
      configuration, state, and performance objects related to a
      specific RSSA must be defined within a separate MIB module.

5.3.  The Configuration Group

   The SMF device is configured with a set of controls.  Some of the
   prominent configuration controls for the SMF device are:

   o  Operational Mode - determines from where topology information is
      derived, e.g., NHDP, CDS-aware unicast routing, or Cross-layer
      from Layer 2.

   o  SMF RSSA - the specific RSSA operational on the device.

   o  Duplicate Packet detection for IPv4 - Identification-based or
      Hash-based DPD (I-DPD or H-DPD, respectively).

   o  Duplicate Packet detection for IPv6 - Identification-based or
      Hash-based DPD.




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   o  SMF Type Message TLV - if NHDP mode is selected, then the SMF Type
      Message TLV MAY be included in the NHDP exchanges.

   o  SMF Address Block TLV - if NHDP mode is selected, then the SMF
      Address Block TLV SHOULD be included in the NHDP exchanges.

   o  SMF Address Forwarding Table - a table identifying configured
      multicast addresses to be forwarded by the SMF process.

5.4.  The State Group

   The State sub-tree reports current state information, for example,

   o  Node RSSA State - identifies whether the node is currently in or
      out of the Relay Set.

   o  Neighbors Table - a table containing current one-hop neighbors and
      their operational RSSA.

5.5.  The Performance Group

   The Performance sub-tree primarily reports counters that relate to
   SMF RSSA performance.  The SMF performance counters consist of per-
   node and per-interface objects:

   o  Total multicast packets received.

   o  Total multicast packets forwarded.

   o  Total duplicate multicast packets detected.

   o  Per interface statistics table with the following entries:

      *  Multicast packets received.

      *  Multicast packets forwarded.

      *  Duplicate multicast packets detected.

5.6.  The Notifications Group

   The Notifications sub-tree contains the list of notifications
   supported within the SMF-MIB module and their intended purpose and
   utility.







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5.7.  Tables and Indexing

   The SMF-MIB module contains a number of tables that record data
   related to:

   o  configuration and operation of packet forwarding on the local
      router,

   o  configuration and operation of local MANET interfaces on the
      router, and

   o  configuration and operation of various RSSAs for packet
      forwarding.

   The SMF-MIB module's tables are indexed via the following constructs:

   o  smfCapabilitiesIndex - the index identifying the combination of
      SMF mode and SMF RSSA available on this device.

   o  smfCfgAddrForwardingIndex - the index to configured multicast
      address lists that are forwarded by the SMF process.

   o  smfCfgIfIndex - the IfIndex of the interface on the local router
      on which SMF is configured.

   o  smfStateNeighborIpAddrType, smfStateNeighborIpAddr, and
      smfStateNeighborPrefixLen - the interface index set of specific
      one-hop neighbor nodes to this local router.

   These tables and their associated indexing are defined in the SMF-MIB
   module:

   o  smfCapabilitiesTable - identifies the resident set of (SMF
      Operational Modes, SMF RSSA algorithms) available on this router.
      This table has 'INDEX { smfCapabilitiesIndex }'.

   o  smfCfgAddrForwardingTable - contains information on multicast
      addresses that are to be forwarded by the SMF process on this
      device.  This table has 'INDEX { smfCfgAddrForwardingIndex }'.

   o  smfCfgInterfaceTable - describes the SMF interfaces on this device
      that are participating in the SMF packet forwarding process.  This
      table has 'INDEX { smfCfgIfIndex }'.








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   o  smfStateNeighborTable - describes the current neighbor nodes,
      their addresses and the SMF RSSA and the interface on which they
      can be reached.  This table has 'INDEX {
      smfStateNeighborIpAddrType, smfStateNeighborIpAddr,
      smfStateNeighborPrefixLen }'.

   o  smfPerfIpv4InterfacePerfTable - contains the IPv4-related SMF
      statistics per each SMF interface on this device.  This table has
      'INDEX { smfCfgIfIndex }'.

   o  smfPerfIpv6InterfacePerfTable - contains the IPv6-related SMF
      statistics per each SMF interface on this device.  This table has
      'INDEX { smfCfgIfIndex }'.

6.  Relationship to Other MIB Modules

6.1.  Relationship to the SNMPv2-MIB

   The 'system' group in the SNMPv2-MIB module [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 SMF-MIB
   module does not duplicate those objects.

6.2.  Relationship to the IP-MIB

   It is an expectation that SMF devices will implement the standard IP-
   MIB module [RFC4293].  Exactly how to integrate SMF packet handling
   and management into the standard IP-MIB module management are part of
   the experiment.

   The SMF-MIB module counters within the smfPerformanceGroup count
   packets handled by the system and interface local SMF process (as
   discussed above).  Not all IP (unicast and multicast) packets on a
   device interface are handled by the SMF process.  So the counters are
   tracking different packet streams in the IP-MIB and SMF-MIB modules.

6.3.  Relationship to the IPMCAST-MIB

   The smfCfgAddrForwardingTable is essentially a filter table (if
   populated) that identifies addresses/packets to be forwarded via the
   local SMF flooding process.  The IP Multicast MIB module in RFC 5132
   [RFC5132] manages objects related to standard IP multicast, which
   could be running in parallel to SMF on the device.

   RFC 5132 manages traditional IP-based multicast (based upon multicast
   routing mechanisms).  The SMF-MIB module provides management for a
   MANET subnet-based flooding mechanism which, may be used for



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   multicast transport (through SMF broadcast) depending upon the MANET
   dynamics and other factors regarding the MANET subnet.  Further, they
   may coexist in certain MANET deployments using the
   smfCfgAddrForwardingTable to hand certain IP multicast addresses to
   the SMF process and other IP multicast packets to be forwarded by
   other multicast mechanisms that are IP route based.  SMF and the
   associated SMF-MIB module are experimental and these are some of the
   experiments to be had with SMF and the SMF-MIB module.

6.4.  MIB Modules Required for IMPORTS

   The objects imported for use in the SMF-MIB module are as follows.
   The MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, Counter32,
   Integer32, TimeTicks and experimental macros are imported from RFC
   2578 [RFC2578].  The TEXTUAL-CONVENTION, RowStatus, and TruthValue
   macros are imported from RFC 2579 [RFC2579].  The MODULE-COMPLIANCE,
   OBJECT-GROUP, and NOTIFICATION-GROUP macros are imported from RFC
   2580 [RFC2580].  The InterfaceIndexOrZero and ifName textual
   conventions are imported from RFC 2863 [RFC2863].  The
   SnmpAdminString textual convention is imported from RFC 3411
   [RFC3411].  The InetAddress, InetAddressType, and
   InetAddressPrefixLength textual conventions are imported from RFC
   4001 [RFC4001].

6.5.  Relationship to Future RSSA-MIB Modules

   In a sense, the SMF-MIB module is a general front-end to a set of
   yet-to-be developed RSSA-specific MIB modules.  These RSSA-specific
   MIB modules will define the objects for the configuration, state,
   performance and notification required for the operation of these
   specific RSSAs.  The SMF-MIB module Capabilities Group allows the
   remote management station the ability to query the router to discover
   the set of supported RSSAs.

7.  SMF-MIB Definitions

   SMF-MIB DEFINITIONS ::= BEGIN

   IMPORTS

      MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
      Counter32, Integer32, TimeTicks, experimental
         FROM SNMPv2-SMI                          -- RFC 2578

      TEXTUAL-CONVENTION, RowStatus, TruthValue
         FROM SNMPv2-TC                           -- RFC 2579





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      MODULE-COMPLIANCE, OBJECT-GROUP,
      NOTIFICATION-GROUP
         FROM SNMPv2-CONF                         -- RFC 2580

      InterfaceIndexOrZero, ifName
         FROM IF-MIB                              -- RFC 2863

      SnmpAdminString
         FROM SNMP-FRAMEWORK-MIB                  -- RFC 3411

      InetAddress, InetAddressType,
      InetAddressPrefixLength
         FROM INET-ADDRESS-MIB                    -- RFC 4001

      IANAsmfOpModeIdTC,
      IANAsmfRssaIdTC
               FROM IANA-SMF-MIB
      ;

   smfMIB MODULE-IDENTITY
      LAST-UPDATED "201410100000Z"  -- October 10, 2014
      ORGANIZATION "IETF MANET Working Group"
      CONTACT-INFO
         "WG EMail:  manet@ietf.org

          WG Chairs: sratliff@cisco.com
                     jmacker@nrl.navy.mil

          Editors:   Robert G. Cole
                     US Army CERDEC
                     6010 Frankford Road
                     Aberdeen Proving Ground, MD 21005
                     USA
                     Phone: +1 443 395-8744
                     EMail: robert.g.cole@us.army.mil

                     Joseph Macker
                     Naval Research Laboratory
                     Washington, D.C. 20375
                     USA
                     EMail: macker@itd.nrl.navy.mil

                     Brian Adamson
                     Naval Research Laboratory
                     Washington, D.C. 20375
                     USA
                     EMail: adamson@itd.nrl.navy.mil"




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      DESCRIPTION
         "This MIB module contains managed object definitions for
          the MANET SMF RSSA process defined in:

          Macker, J., Ed., Simplified Multicast Forwarding, RFC 6621,
          May 2012.

          Copyright (c) 2014 IETF Trust and the persons identified as
          authors of the code.  All rights reserved.

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

        -- Revision History
        REVISION    "201410100000Z"   -- October 10, 2014
        DESCRIPTION
           "The first version of this MIB module,
            published as RFC 7367.
           "
        ::= { experimental 126 }

   --
   -- TEXTUAL CONVENTIONs
   --

   SmfStatus ::= TEXTUAL-CONVENTION
       STATUS       current
       DESCRIPTION
          "An indication of the operability of an SMF
          function or feature.  For example, the status
          of an interface: 'enabled' indicates that
          this interface is performing SMF functions
          and 'disabled' indicates that it is not.
          Similarly, for the status of the device:
          'enabled' indicates that the device has
          enabled the SMF functions on the device and
          'disabled' means that the device and all interfaces
          have disabled all SMF functions."
       SYNTAX  INTEGER {
                        enabled (1),
                        disabled (2)
               }
   --
   -- Top-Level Object Identifier Assignments



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   --

   smfMIBNotifications OBJECT IDENTIFIER ::= { smfMIB 0 }
   smfMIBObjects       OBJECT IDENTIFIER ::= { smfMIB 1 }
   smfMIBConformance   OBJECT IDENTIFIER ::= { smfMIB 2 }

   --
   -- smfMIBObjects Assignments:
   --      smfCapabilitiesGroup  - 1
   --      smfConfigurationGroup - 2
   --      smfStateGroup         - 3
   --      smfPerformanceGroup   - 4
   --

   --
   -- smfCapabilitiesGroup
   --
   --    This group contains the SMF objects that identify specific
   --    capabilities within this device related to SMF functions.
   --

   smfCapabilitiesGroup  OBJECT IDENTIFIER ::= { smfMIBObjects 1 }

   --
   -- SMF Capabilities Table
   --

   smfCapabilitiesTable OBJECT-TYPE
       SYNTAX      SEQUENCE OF SmfCapabilitiesEntry
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The smfCapabilitiesTable identifies the
            resident set of SMF Operational Modes and
            RSSA combinations that can run on this
            forwarder."
       REFERENCE
          "See Section 7.2 'Reduced Relay Set Forwarding',
           Section 8.1.1 'SMF Message TLV Type', and
           the Appendices A, B, and C in
           RFC 6621 - 'Simplified Multicast Forwarding',
           Macker, J., May 2012."
       ::= { smfCapabilitiesGroup 1 }

   smfCapabilitiesEntry OBJECT-TYPE
       SYNTAX      SmfCapabilitiesEntry
       MAX-ACCESS  not-accessible
       STATUS      current



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       DESCRIPTION
           "Information about a particular operational
            mode and RSSA combination.
           "
       INDEX   { smfCapabilitiesIndex }
       ::= { smfCapabilitiesTable 1 }

   SmfCapabilitiesEntry ::= SEQUENCE {
         smfCapabilitiesIndex                 Integer32,
         smfCapabilitiesOpModeID              IANAsmfOpModeIdTC,
         smfCapabilitiesRssaID                IANAsmfRssaIdTC
   }

   smfCapabilitiesIndex     OBJECT-TYPE
       SYNTAX      Integer32 (1..2147483647)
       MAX-ACCESS  not-accessible
       STATUS      current
       DESCRIPTION
           "The index for this entry; a unique value,
            greater than zero, for each combination of
            a particular operational mode and RSSA
            available on this device.
            It is recommended that values are assigned
            contiguously starting from 1.

            Rows in this table are automatically
            populated by the entity's management system
            on initialization.

            By default, the agent should support at least the
            Classical Flooding 'cF' algorithm.  All compliant
            SMF forwarders must support Classical Flooding.
            Hence, the first entry in this table MUST exist
            and MUST be defined as:

               smfCapabilitiesIndex i '1'
               smfCapabilitiesOpModeID i 'cfOnly(1)'
               smfCapabilitiesRssaID i 'cF(1)'

            The value for each combination MUST remain
            constant at least from one re-initialization
            of the entity's management system to the
            next re-initialization."
       ::= { smfCapabilitiesEntry 1 }

   smfCapabilitiesOpModeID     OBJECT-TYPE
       SYNTAX      IANAsmfOpModeIdTC
       MAX-ACCESS  read-only



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       STATUS      current
       DESCRIPTION
           "This object identifies
            the particular operational mode for this device."
       ::= { smfCapabilitiesEntry 2 }

   smfCapabilitiesRssaID     OBJECT-TYPE
       SYNTAX      IANAsmfRssaIdTC
       MAX-ACCESS  read-only
       STATUS      current
       DESCRIPTION
           "This object identifies
            the particular RSSA algorithm in this MIB
            module.  Example RSSAs are found in the
            appendix of RFC 6621."
       REFERENCE
          "For example, see Section 8.1.1 'SMF Message TLV Type',
           and the Appendices A, B, and C in
           RFC 6621 - 'Simplified Multicast Forwarding',
           Macker, J., May 2012."
       ::= { smfCapabilitiesEntry 3 }

   --
   -- smfConfigurationGroup
   --
   --    This group contains the SMF objects that configure specific
   --    options that determine the overall performance and operation
   --    of the multicast forwarding process for the router device
   --    and its interfaces.
   --

   smfConfigurationGroup  OBJECT IDENTIFIER ::= { smfMIBObjects 2 }

   smfCfgAdminStatus  OBJECT-TYPE
      SYNTAX      SmfStatus
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The configured status of the SMF process
          on this device.  'enabled(1)' means that
          SMF is configured to run on this device.
          'disabled(2)' means that the SMF process
          is configured off.

          Prior to SMF functions being performed over
          specific interfaces, this object must first
          be 'enabled'.  If this object is 'disabled',
          then no SMF functions are being performed on



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          the device and all smfCfgIfAdminStatus objects
          MUST also be set to 'disabled'.  When this
          object is changed from 'enabled' to 'disabled'
          by the manager, then all smfCfgIfAdminStatus
          objects MUST also be automatically set to
          'disabled' by the agent.

          The default value for this object SHOULD be
          'enabled'.

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

   smfCfgSmfSysUpTime OBJECT-TYPE
      SYNTAX  TimeTicks
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The time (in hundredths of a second) since the
          system SMF process was last re-initialized.
          The SMF process is re-initialized when the
          value of the 'smfCfgAdminStatus' object
          transitions to 'enabled' from either a prior
          value of 'disabled' or upon initialization
          of this device."
   ::= { smfConfigurationGroup 2 }

   smfCfgRouterIDAddrType  OBJECT-TYPE
      SYNTAX      InetAddressType { ipv4(1), ipv6(2) }
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The address type of the address used for
          the SMF ID of this router as specified
          in the 'smfCfgRouterID' next.

          Only the values ipv4(1) and ipv6(2)
          are supported.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      DEFVAL { ipv4 }
   ::= { smfConfigurationGroup 3 }




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   smfCfgRouterID  OBJECT-TYPE
      SYNTAX      InetAddress (SIZE(4|16))
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The IP address used as the SMF router ID.
          This can be set by the management station.
          If not explicitly set, then the device
          SHOULD select a routable IP address
          assigned to this router for use as
          the 'smfCfgRouterID'.

          The smfCfgRouterID is a logical identification
          that MUST be consistent across interoperable
          SMF neighborhoods, and it is RECOMMENDED to be
          chosen as the numerically largest address
          contained in a node's 'Neighbor Address List'
          as defined in NHDP.  An smfCfgRouterID MUST be
          unique within the scope of the operating
          MANET network regardless of the method used
          for selecting it.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "For example, see

          Appendix A.1 'E-CDS Relay Set Selection Overview'

          and

          Appendix C.1 'MPR-CDS Relay Set Selection
          Overview' in

          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
    ::= { smfConfigurationGroup 4 }

   smfCfgOperationalMode  OBJECT-TYPE
      SYNTAX      Integer32 (1..2147483647)
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The SMF RSS node operational mode and
          RSSA combination active on this
          local forwarder.  This object is defined
          to be equal to the smfCapabilitiesIndex,



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          which identifies the specific active
          operational mode and RSSA.

          The default value for this object is
          '1', which corresponds to:

             smfCapabilitiesOpModeID i 'cfOnly(1)'
             smfCapabilitiesRssaID i 'cF(1)'

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
          "See Section 7.2 'Reduced Relay Set Forwarding',
           and the Appendices A, B, and C in
           RFC 6621 - 'Simplified Multicast Forwarding',
           Macker, J., Ed., May 2012."
      DEFVAL { 1 }
   ::= { smfConfigurationGroup 5 }

   smfCfgRssaMember  OBJECT-TYPE
      SYNTAX      INTEGER {
                          potential(1),
                          always(2),
                          never(3)
                          }
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The RSSA downselects a set of forwarders for
          multicast forwarding.  Sometimes it is useful
          to force an agent to be included or excluded
          from the resulting RSS.  This object is a
          switch to allow for this behavior.

          The value 'potential(1)' allows the selected
          RSSA to determine if this agent is included
          or excluded from the RSS.

          The value 'always(2)' forces the selected
          RSSA to include this agent in the RSS.

          The value 'never(3)' forces the selected
          RSSA to exclude this agent from the RSS.

          The default setting for this object is
          'potential(1)'.  Other settings could pose
          operational risks under certain conditions.



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          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "See Section 7 'Relay Set Selection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
      DEFVAL { potential }
   ::= { smfConfigurationGroup 6 }

   smfCfgIpv4Dpd  OBJECT-TYPE
      SYNTAX      INTEGER {
                          hashBased(1),
                          identificationBased(2)
                          }
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The current method for IPv4 duplicate packet
          detection.

          The value 'hashBased(1)' indicates that the
          router's duplicate packet detection is based
          upon comparing a hash over the packet fields.
          This is the default setting for this object.

          The value 'identificationBased(2)'
          indicates that the duplicate packet
          detection relies upon header information
          in the multicast packets to identify
          previously received packets.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "See Section 6.2 'IPv4 Duplicate Packet
          Detection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
      DEFVAL { hashBased }
   ::= { smfConfigurationGroup 7 }

   smfCfgIpv6Dpd  OBJECT-TYPE
      SYNTAX      INTEGER {
                          hashBased(1),
                          identificationBased(2)
                          }



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      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The current method for IPv6 duplicate packet
          detection.

          The values indicate the type of method used
          for duplicate packet detection as described
          the previous description for the object
          'smfCfgIpv4Dpd'.

          The default value for this object is
          'hashBased(1)'.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "See Section 6.1 'IPv6 Duplicate Packet
          Detection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
      DEFVAL { hashBased }
   ::= { smfConfigurationGroup 8 }

   smfCfgMaxPktLifetime  OBJECT-TYPE
      SYNTAX      Integer32 (0..65535)
      UNITS       "Seconds"
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The estimate of the network packet
          traversal time.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "See Section 6 'SMF Duplicate Packet
          Detection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
      DEFVAL { 60 }
   ::= { smfConfigurationGroup 9 }

   smfCfgDpdEntryMaxLifetime  OBJECT-TYPE
      SYNTAX      Integer32 (0..65525)
      UNITS       "Seconds"



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      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "The maximum lifetime of a cached DPD
          record in the local device storage.

          If the memory is running low prior to the
          MaxLifetime being exceeded, the local SMF
          devices should purge the oldest records first.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "See Section 6 'SMF Duplicate Packet
          Detection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
      DEFVAL { 600 }
   ::= { smfConfigurationGroup 10 }

   --
   -- Configuration of messages to be included in
   -- NHDP message exchanges in support of SMF
   -- operations.
   --

   smfCfgNhdpRssaMesgTLVIncluded  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "Indicates whether or not the associated NHDP
          messages include the RSSA Message TLV.  This
          is an optional SMF operational setting.
          The value 'true(1)' indicates that this TLV is
          included; the value 'false(2)' indicates that it
          is not included.

          It is RECOMMENDED that the RSSA Message TLV
          be included in the NHDP messages.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "See Section 8.1.1 'SMF Message TLV Type' in
          RFC 6621 - 'Simplified Multicast Forwarding',



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          Macker, J., Ed., May 2012."
      DEFVAL { true }
   ::= { smfConfigurationGroup 11 }

   smfCfgNhdpRssaAddrBlockTLVIncluded  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-write
      STATUS      current
      DESCRIPTION
         "Indicates whether or not the associated NHDP
          messages include the RSSA Address Block TLV.
          This is an optional SMF operational setting.
          The value 'true(1)' indicates that this TLV is
          included; the value 'false(2)' indicates that it
          is not included.

          The smfCfgNhdpRssaAddrBlockTLVIncluded is optional
          in all cases as it depends on the existence of
          an address block that may not be present.
          If this SMF device is configured with NHDP,
          then this object SHOULD be set to 'true(1)'.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
      REFERENCE
         "See Section 8.1.2 'SMF Address Block TLV
          Type' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
      DEFVAL { true }
   ::= { smfConfigurationGroup 12 }

   --
   -- Table identifying configured multicast addresses to be forwarded.
   --

   smfCfgAddrForwardingTable  OBJECT-TYPE
      SYNTAX     SEQUENCE OF SmfCfgAddrForwardingEntry
      MAX-ACCESS not-accessible
      STATUS     current
      DESCRIPTION
         "The smfCfgAddrForwardingTable is essentially a filter
          table (if populated) that identifies addresses/packets
          to be forwarded via the local SMF flooding process.
          The IP Multicast MIB module in RFC 5132 manages objects
          related to standard IP multicast, which could be running
          in parallel to SMF on the device.



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          RFC 5132 manages traditional IP-based multicast (based
          upon multicast routing mechanisms).  The SMF-MIB module
          provides management for a MANET subnet-based flooding
          mechanism that may be used for multicast transport
          (through SMF broadcast) depending upon the MANET dynamics
          and other factors regarding the MANET subnet.  Further,
          they may coexist in certain MANET deployments
          using the smfCfgAddrForwardingTable to hand certain IP
          multicast addresses to the SMF process and other IP
          multicast packets to be forwarded by other
          multicast mechanisms that are IP route based.  SMF and
          the associated SMF-MIB module are experimental and these
          are some of the experiments to be had with SMF and
          the SMF-MIB module.

          This is the (conceptual) table containing information on
          multicast addresses that are to be forwarded by the SMF
          process.  This table represents an IP filters table for
          forwarding (or not) packets based upon their IP
          multicast address.

          The SMF process can be configured to forward only those
          multicast addresses found within the
          smfCfgAddrForwardingTable.  As such, addresses that are
          to be forwarded by the SMF process MUST be found within
          the address ranges configured within this table, unless
          this table is empty.

          Each row is associated with a range of multicast
          addresses, and ranges for different rows must be disjoint.
          Different rows MAY share a common
          smfCfgAddrForwardingGroupName to administratively
          associate different rows.

          The objects in this table are persistent and, when written,
          the entity SHOULD save the change to non-volatile storage."
      REFERENCE
         "See Section 9.1 'Forwarded Multicast Groups' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfConfigurationGroup 13 }

   smfCfgAddrForwardingEntry OBJECT-TYPE
      SYNTAX     SmfCfgAddrForwardingEntry
      MAX-ACCESS not-accessible
      STATUS     current
      DESCRIPTION
         "An entry (conceptual row) containing the information on a



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          particular multicast scope."
      INDEX { smfCfgAddrForwardingIndex }
      ::= { smfCfgAddrForwardingTable 1 }

   SmfCfgAddrForwardingEntry ::= SEQUENCE {
      smfCfgAddrForwardingIndex         Integer32,
      smfCfgAddrForwardingGroupName     SnmpAdminString,
      smfCfgAddrForwardingAddrType      InetAddressType,
      smfCfgAddrForwardingAddress       InetAddress,
      smfCfgAddrForwardingAddrPrefixLength
                                        InetAddressPrefixLength,
      smfCfgAddrForwardingStatus        RowStatus
   }

   smfCfgAddrForwardingIndex     OBJECT-TYPE
      SYNTAX      Integer32 (1..2147483647)
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "This object identifies a unique entry
          for a forwarding group.  The index for
          this entry is a unique value,
          greater than zero, for each row.
          It is recommended that values are assigned
          contiguously starting from 1.

          The value for each row index MUST remain
          constant from one re-initialization
          of the entity's management system to the
          next re-initialization."
   ::= { smfCfgAddrForwardingEntry 1 }

   smfCfgAddrForwardingGroupName  OBJECT-TYPE
      SYNTAX      SnmpAdminString
      MAX-ACCESS  read-create
      STATUS      current
      DESCRIPTION
         "This object identifies a group name for a set of
          row entries in order to administratively associate
          a set of address ranges.

          If there is no group name or this object is
          otherwise not applicable, then this object contains
          a zero-length string.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."



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   ::= { smfCfgAddrForwardingEntry 2 }

   smfCfgAddrForwardingAddrType OBJECT-TYPE
      SYNTAX     InetAddressType { ipv4(1), ipv6(2) }
      MAX-ACCESS read-create
      STATUS     current
      DESCRIPTION
         "The type of the addresses in the multicast
          forwarding ranges identified by this table.

          Only the values ipv4(1) and ipv6(2) are
          supported.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
   ::= { smfCfgAddrForwardingEntry 3 }

   smfCfgAddrForwardingAddress OBJECT-TYPE
      SYNTAX     InetAddress (SIZE(4|16))
      MAX-ACCESS read-create
      STATUS     current
      DESCRIPTION
         "The multicast group address that, when
          combined with smfCfgAddrForwardingAddrPrefixLength,
          gives the group prefix for this forwarding range.
          The InetAddressType is given by
          smfCfgAddrForwardingAddrType.

          This address object is only significant up to
          smfCfgAddrForwardingAddrPrefixLength bits.  The
          remaining address bits are set to zero.  This is
          especially important for this index field.
          Any non-zero bits would signify an entirely
          different entry.

          Legal values correspond to the subset of address
          families for which multicast address allocation
          is supported.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
   ::= { smfCfgAddrForwardingEntry 4 }

   smfCfgAddrForwardingAddrPrefixLength OBJECT-TYPE
      SYNTAX     InetAddressPrefixLength
      MAX-ACCESS read-create



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      STATUS     current
      DESCRIPTION
         "The length in bits of the mask that, when
          combined with smfCfgAddrForwardingAddress,
          gives the group prefix for this forwarding
          range.

          This object is persistent and, when written,
          the entity SHOULD save the change to
          non-volatile storage."
   ::= { smfCfgAddrForwardingEntry 5 }

   smfCfgAddrForwardingStatus OBJECT-TYPE
      SYNTAX     RowStatus
      MAX-ACCESS read-create
      STATUS     current
      DESCRIPTION
         "The status of this row, by which new entries may be
          created, or old entries deleted from this table."
   ::= { smfCfgAddrForwardingEntry 6 }

   --
   -- SMF Interfaces Configuration Table
   --

   smfCfgInterfaceTable  OBJECT-TYPE
      SYNTAX      SEQUENCE OF SmfCfgInterfaceEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The SMF Interface Table describes the SMF
          interfaces that are participating in the
          SMF packet forwarding process.  The ifIndex is
          from the interfaces group defined in the
          Interfaces Group MIB module (RFC 2863).  As such,
          this table 'sparse augments' the ifTable
          specifically when SMF is to be configured to
          operate over this interface.

          A conceptual row in this table exists if and only
          if either a manager has explicitly created the row
          or there is an interface on the managed device
          that automatically supports and runs SMF as part
          of the device's initialization process.

          The manager creates a row in this table by setting
          the rowStatus to 'createAndGo' or 'createAndWait'.
          Row objects having associated DEFVAL clauses are



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          automatically defined by the agent with these
          values during row creation, unless the manager
          explicitly defines these object values during the
          row creation.

          As the smfCfgInterfaceTable sparsely augments the
          IfTable.  Hence,

             + an entry cannot exist in smfCfgInterfaceTable
               without a corresponding entry in the ifTable.

             + if an entry in the ifTable is removed, the
               corresponding entry (if it exists) in the
               smfCfgInterfaceTable MUST be removed.

             + the smfCfgIfStatus can have a value of
               'enabled' or 'disabled' independent of the
               current value of the ifAdminStatus of the
               corresponding entry in the ifTable.

          The values of the objects smfCfgAdminStatus and
          smfCfgIfAdminStatus reflect the up-down status of
          the SMF process running on the device and on the
          specific interfaces, respectively.  Hence,

             + the value of the smfCfgAdminStatus can be
               'enabled' or 'disabled' reflecting the current
               running status of the SMF process on the device.

             + the value of the smfCfgIfAdminStatus can be
               'enabled' or 'disabled' if the value of the
               smfCfgAdminStatus is set to 'enabled'.

             + if the value of the smfCfgAdminStatus is
               'disabled', then the corresponding
               smfCfgIfAdminStatus objects MUST be set
               to 'disabled' in the smfCfgInterfaceTable.

             + once the value of the smfCfgAdminStatus changes
               from 'disabled' to 'enabled', it is up to the
               management system to make the corresponding
               changes to the smfCfgIfAdminStatus values
               back to 'enabled'.
          "
      REFERENCE
         "RFC 2863 - 'The Interfaces Group MIB', McCloghrie,
          K., and F. Kastenholtz, June 2000."
   ::= { smfConfigurationGroup 14 }



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   smfCfgInterfaceEntry OBJECT-TYPE
      SYNTAX      SmfCfgInterfaceEntry
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The SMF interface entry describes one SMF
          interface as indexed by its ifIndex.

          The objects in this table are persistent and, when
          written, the device SHOULD save the change to
          non-volatile storage.  For further information
          on the storage behavior for these objects, refer
          to the description for the smfCfgIfRowStatus
          object."
      INDEX { smfCfgIfIndex }
   ::= { smfCfgInterfaceTable 1 }

   SmfCfgInterfaceEntry ::=
      SEQUENCE {
         smfCfgIfIndex        InterfaceIndexOrZero,
         smfCfgIfAdminStatus  SmfStatus,
         smfCfgIfSmfUpTime    TimeTicks,
         smfCfgIfRowStatus    RowStatus
         }

   smfCfgIfIndex  OBJECT-TYPE
      SYNTAX      InterfaceIndexOrZero
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The ifIndex for this SMF interface.  This value
          MUST correspond to an ifIndex referring
          to a valid entry in the Interfaces Table.
          If the manager attempts to create a row
          for which the ifIndex does not exist on the
          local device, then the agent SHOULD issue
          a return value of 'inconsistentValue' and
          the operation SHOULD fail."
      REFERENCE
         "RFC 2863 - 'The Interfaces Group MIB', McCloghrie,
          K., and F. Kastenholtz, June 2000."
      ::= { smfCfgInterfaceEntry 1 }

   smfCfgIfAdminStatus OBJECT-TYPE
      SYNTAX      SmfStatus
      MAX-ACCESS  read-create
      STATUS      current
      DESCRIPTION



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         "The SMF interface's administrative status.
         The value 'enabled' denotes that the interface
         is running the SMF forwarding process.
         The value 'disabled' denotes that the interface is
         currently external to the SMF forwarding process.

         When the value of the smfCfgAdminStatus is
         'disabled', then the corresponding smfCfgIfAdminStatus
         objects MUST be set to 'disabled' in the
         smfCfgInterfaceTable.

         If this object is not equal to 'enabled', all associated
         entries in the 'smfPerfIpv4InterfacePerfTable' and the
         'smfPerfIpv6InterfacePerfTable' MUST be deleted.

     The default value for this object is 'enabled(1)'.

         This object SHOULD be persistent and when
         written the device SHOULD save the change to
         non-volatile storage."
      DEFVAL { enabled }
      ::= { smfCfgInterfaceEntry 2 }

   smfCfgIfSmfUpTime OBJECT-TYPE
      SYNTAX  TimeTicks
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The time (in hundredths of a second) since
         this interface SMF process was last
         re-initialized.  The interface SMF process is
         re-initialized when the value of the
         'smfCfgIfAdminStatus' object transitions to 'enabled'
         from either a prior value of 'disabled' or upon
         initialization of this interface or this device."
      ::= { smfCfgInterfaceEntry 3 }

   smfCfgIfRowStatus  OBJECT-TYPE
      SYNTAX      RowStatus
      MAX-ACCESS  read-create
      STATUS      current
      DESCRIPTION
         "This object permits management of this 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.



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          An entry may not exist in the 'active' state unless all
          objects in the entry have a defined appropriate value.  For
          objects with DEFVAL clauses, the management station
          does not need to specify the value of these objects in order
          for the row to transit to the 'active' state; the default
          value for these objects is used.  For objects that do not
          have DEFVAL clauses, the network manager MUST
          specify the value of these objects prior to this row
          transitioning to the 'active' state.

          When this object transitions to 'active', all objects
          in this row SHOULD be written to non-volatile (stable)
          storage.  Read-create objects in this row MAY be modified.
          When an object in a row with smfCfgIfRowStatus of 'active'
          is changed, then the updated value MUST be reflected in SMF
          and this new object value MUST be written to non-volatile
          storage."
      ::= { smfCfgInterfaceEntry 4 }

   --
   -- smfStateGroup
   --
   --    Contains information describing the current state of the SMF
   --    process such as the current inclusion in the RS or not.
   --

   smfStateGroup  OBJECT IDENTIFIER ::= { smfMIBObjects 3 }

   smfStateNodeRsStatusIncluded  OBJECT-TYPE
      SYNTAX      TruthValue
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "The current status of the SMF node in the context of
          the MANETs relay set.  A value of 'true(1)' indicates
          that the node is currently part of the MANET Relay
          Set.  A value of 'false(2)' indicates that the node
          is currently not part of the MANET Relay Set."
      REFERENCE
         "See Section 7 'Relay Set Selection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfStateGroup 1 }

   smfStateDpdMemoryOverflow  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "DPD Records"
      MAX-ACCESS  read-only



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      STATUS      current
      DESCRIPTION
         "The number of DPD records that had to be flushed to
          prevent memory overruns for caching of these records.
          The number of records to be flushed upon a buffer
          overflow is an implementation specific decision.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 6 'SMF Duplicate Packet
          Detection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfStateGroup 2 }

   --
   -- SMF Neighbor Table
   --

   smfStateNeighborTable  OBJECT-TYPE
      SYNTAX       SEQUENCE OF SmfStateNeighborEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "The SMF StateNeighborTable describes the
          current one-hop neighbor nodes, their address
          and SMF RSSA, and the interface on which
          they can be reached."
      REFERENCE
         "See Section 8 'SMF Neighborhood Discovery' and
          Section 8.1. 'SMF Relay Algorithm TLV
          Types' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfStateGroup 3 }

   smfStateNeighborEntry  OBJECT-TYPE
      SYNTAX       SmfStateNeighborEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "The SMF Neighbor Table contains the
          set of one-hop neighbors, the interface



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RFC 7367                       The SMF-MIB                  October 2014


          they are reachable on, and the SMF RSSA
          they are currently running."
      INDEX { smfStateNeighborIpAddrType,
              smfStateNeighborIpAddr,
              smfStateNeighborPrefixLen }
   ::= { smfStateNeighborTable 1 }

   SmfStateNeighborEntry ::=
      SEQUENCE {
         smfStateNeighborIpAddrType        InetAddressType,
         smfStateNeighborIpAddr            InetAddress,
         smfStateNeighborPrefixLen         InetAddressPrefixLength,
         smfStateNeighborRSSA              IANAsmfRssaIdTC,
         smfStateNeighborNextHopInterface  InterfaceIndexOrZero
         }

   smfStateNeighborIpAddrType  OBJECT-TYPE
      SYNTAX      InetAddressType { ipv4(1), ipv6(2) }
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The one-hop neighbor IP address type.

          Only the values 'ipv4(1)' and
          'ipv6(2)' are supported."
   ::= { smfStateNeighborEntry 1 }

   smfStateNeighborIpAddr  OBJECT-TYPE
      SYNTAX      InetAddress (SIZE(4|16))
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The one-hop neighbor Inet IPv4 or IPv6
         address.

         Only IPv4 and IPv6 addresses
         are supported."
   ::= { smfStateNeighborEntry 2 }

   smfStateNeighborPrefixLen  OBJECT-TYPE
      SYNTAX      InetAddressPrefixLength
      UNITS       "bits"
      MAX-ACCESS  not-accessible
      STATUS      current
      DESCRIPTION
         "The prefix length.  This is a decimal value that
          indicates the number of contiguous, higher-order
          bits of the address that make up the network



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          portion of the address."
   ::= { smfStateNeighborEntry 3 }

   smfStateNeighborRSSA  OBJECT-TYPE
      SYNTAX       IANAsmfRssaIdTC
      MAX-ACCESS   read-only
      STATUS       current
      DESCRIPTION
         "The current RSSA running on the neighbor."
   ::= { smfStateNeighborEntry 4 }

   smfStateNeighborNextHopInterface OBJECT-TYPE
      SYNTAX       InterfaceIndexOrZero
      MAX-ACCESS   read-only
      STATUS       current
      DESCRIPTION
         "The interface ifIndex over which the
          neighbor is reachable in one-hop."
   ::= { smfStateNeighborEntry 6 }

   --
   -- SMF Performance Group
   --
   --    Contains objects that help to characterize the
   --    performance of the SMF RSSA process, such as statistics
   --    counters.  There are two types of SMF RSSA statistics:
   --    global counters and per-interface counters.
   --
   --    It is an expectation that SMF devices will
   --    implement the standard IP-MIB module in RFC 4293.
   --    Exactly how to integrate SMF packet handling and
   --    management into the standard IP-MIB module management
   --    is part of the experiment.
   --
   --    The SMF-MIB module counters within the
   --    smfPerformanceGroup count packets handled by the
   --    system and interface local SMF process (as discussed
   --    above).  Not all IP (unicast and multicast) packets
   --    on a device interface are handled by the SMF process.
   --    So the counters are tracking different packet streams
   --    in the IP-MIB and SMF-MIB modules.
   --

   smfPerformanceGroup  OBJECT IDENTIFIER ::= { smfMIBObjects 4 }

   smfPerfGobalGroup  OBJECT IDENTIFIER ::= { smfPerformanceGroup 1 }

   --



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   -- IPv4 packet counters
   --

   smfPerfIpv4MultiPktsRecvTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of
          multicast IPv4 packets received by the
          device and delivered to the SMF process.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
   ::= { smfPerfGobalGroup 1 }

   smfPerfIpv4MultiPktsForwardedTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of
          multicast IPv4 packets forwarded by the
          device.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
   ::= { smfPerfGobalGroup 2 }

   smfPerfIpv4DuplMultiPktsDetectedTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of duplicate
          multicast IPv4 packets detected by the
          device.



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          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 6.2 'IPv4 Duplicate Packet
          Detection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfPerfGobalGroup 3 }

   smfPerfIpv4DroppedMultiPktsTTLExceededTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of dropped
          multicast IPv4 packets by the
          device due to Time to Live (TTL) exceeded.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 5 'SMF Packet Processing and
          Forwarding' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfPerfGobalGroup 4 }

   smfPerfIpv4TTLLargerThanPreviousTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of IPv4 packets
          received that have a TTL larger than that
          of a previously received identical packet.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been



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          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 5 'SMF Packet Processing and
          Forwarding' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfPerfGobalGroup 5 }

   --
   -- IPv6 packet counters
   --

   smfPerfIpv6MultiPktsRecvTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of
          multicast IPv6 packets received by the
          device and delivered to the SMF process.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
   ::= { smfPerfGobalGroup 6 }

   smfPerfIpv6MultiPktsForwardedTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of
          multicast IPv6 packets forwarded by the
          device.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the



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          smfCfgSmfSysUpTime object also be monitored."
   ::= { smfPerfGobalGroup 7 }

   smfPerfIpv6DuplMultiPktsDetectedTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of duplicate
          multicast IPv6 packets detected by the
          device.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 6.1 'IPv6 Duplicate Packet
          Detection' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfPerfGobalGroup 8 }

   smfPerfIpv6DroppedMultiPktsTTLExceededTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of dropped
          multicast IPv6 packets by the
          device due to TTL exceeded.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 5 'SMF Packet Processing and
          Forwarding' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfPerfGobalGroup 9 }



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   smfPerfIpv6TTLLargerThanPreviousTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of IPv6 packets
          received that have a TTL larger than that
          of a previously received identical packet.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 5 'SMF Packet Processing and
          Forwarding' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfPerfGobalGroup 10 }

   smfPerfIpv6HAVAssistsReqdTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of IPv6 packets
          received that required the Hash Assist Value (HAV)
          for DPD.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 6.1.1 'IPv6 SMF_DPD Option Header' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfPerfGobalGroup 11 }

   smfPerfIpv6DpdHeaderInsertionsTotal  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"



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      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of IPv6 packets
          received that the device inserted the
          DPD header option.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled.  In order to check for
          the occurrence of such a discontinuity when monitoring
          this counter object, it is recommended that the
          smfCfgSmfSysUpTime object also be monitored."
      REFERENCE
         "See Section 6.1.2 'IPv6 Identification-Based
          DPD' in
          RFC 6621 - 'Simplified Multicast Forwarding',
          Macker, J., Ed., May 2012."
   ::= { smfPerfGobalGroup 12 }

   --
   -- Per SMF Interface Performance Table
   --

   smfPerfInterfaceGroup OBJECT IDENTIFIER ::= { smfPerformanceGroup 2 }

   smfPerfIpv4InterfacePerfTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF SmfPerfIpv4InterfacePerfEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "The SMF Interface Performance Table
          describes the SMF counters per
          interface."
   ::= { smfPerfInterfaceGroup 1 }

   smfPerfIpv4InterfacePerfEntry OBJECT-TYPE
      SYNTAX       SmfPerfIpv4InterfacePerfEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "The SMF Interface Performance entry
          describes the statistics for a particular
          node interface."
      INDEX { smfCfgIfIndex }
   ::= { smfPerfIpv4InterfacePerfTable 1 }

   SmfPerfIpv4InterfacePerfEntry ::=



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      SEQUENCE {
         smfPerfIpv4MultiPktsRecvPerIf               Counter32,
         smfPerfIpv4MultiPktsForwardedPerIf          Counter32,
         smfPerfIpv4DuplMultiPktsDetectedPerIf       Counter32,
         smfPerfIpv4DroppedMultiPktsTTLExceededPerIf Counter32,
         smfPerfIpv4TTLLargerThanPreviousPerIf       Counter32
         }

   smfPerfIpv4MultiPktsRecvPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the number of multicast IP
          packets received by the SMF process on
          this device on this interface.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv4InterfacePerfEntry 1 }

   smfPerfIpv4MultiPktsForwardedPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the number of
          multicast IP packets forwarded by the
          SMF process on this device
          on this interface.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv4InterfacePerfEntry 2 }

   smfPerfIpv4DuplMultiPktsDetectedPerIf  OBJECT-TYPE



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      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the number of duplicate
          multicast IP packets detected by the
          SMF process on this device
          on this interface.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv4InterfacePerfEntry 3 }

   smfPerfIpv4DroppedMultiPktsTTLExceededPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of dropped
          multicast IPv4 packets by the SMF process
          on this device on this interface
          due to TTL exceeded.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv4InterfacePerfEntry 4 }

   smfPerfIpv4TTLLargerThanPreviousPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of IPv4 packets
          received by the SMF process on this device
          on this interface that have a TTL larger than



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RFC 7367                       The SMF-MIB                  October 2014


          that of a previously received identical packet.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv4InterfacePerfEntry 5 }

   smfPerfIpv6InterfacePerfTable OBJECT-TYPE
      SYNTAX       SEQUENCE OF SmfPerfIpv6InterfacePerfEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "The SMF Interface Performance Table
          describes the SMF counters per
          interface."
   ::= { smfPerfInterfaceGroup 2 }

   smfPerfIpv6InterfacePerfEntry OBJECT-TYPE
      SYNTAX       SmfPerfIpv6InterfacePerfEntry
      MAX-ACCESS   not-accessible
      STATUS       current
      DESCRIPTION
         "The SMF Interface Performance entry
          describes the counters for a particular
          node interface."
      INDEX { smfCfgIfIndex }
   ::= { smfPerfIpv6InterfacePerfTable 1 }

   SmfPerfIpv6InterfacePerfEntry ::=
      SEQUENCE {
         smfPerfIpv6MultiPktsRecvPerIf               Counter32,
         smfPerfIpv6MultiPktsForwardedPerIf          Counter32,
         smfPerfIpv6DuplMultiPktsDetectedPerIf       Counter32,
         smfPerfIpv6DroppedMultiPktsTTLExceededPerIf Counter32,
         smfPerfIpv6TTLLargerThanPreviousPerIf       Counter32,
         smfPerfIpv6HAVAssistsReqdPerIf              Counter32,
         smfPerfIpv6DpdHeaderInsertionsPerIf         Counter32
         }

   smfPerfIpv6MultiPktsRecvPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current



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RFC 7367                       The SMF-MIB                  October 2014


      DESCRIPTION
         "A counter of the number of
          multicast IP packets received by the
          SMF process on this device
          on this interface.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv6InterfacePerfEntry 1 }

   smfPerfIpv6MultiPktsForwardedPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the number of
          multicast IP packets forwarded by the
          SMF process on this device
          on this interface.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv6InterfacePerfEntry 2 }

   smfPerfIpv6DuplMultiPktsDetectedPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the number of duplicate
          multicast IP packets detected by the
          SMF process on this device
          on this interface.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been



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RFC 7367                       The SMF-MIB                  October 2014


          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv6InterfacePerfEntry 3 }

   smfPerfIpv6DroppedMultiPktsTTLExceededPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the number of dropped
          multicast IP packets by the
          SMF process on this device
          on this interface due to TTL
          exceeded.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv6InterfacePerfEntry 4 }

   smfPerfIpv6TTLLargerThanPreviousPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of IPv6 packets
          received that have a TTL larger than that
          of a previously received identical packet
          by the SMF process on this device on this
          interface.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv6InterfacePerfEntry 5 }



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RFC 7367                       The SMF-MIB                  October 2014


   smfPerfIpv6HAVAssistsReqdPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of IPv6 packets
          received by the SMF process on this device
          on this interface that required the
          HAV assist for DPD.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv6InterfacePerfEntry 6 }

   smfPerfIpv6DpdHeaderInsertionsPerIf  OBJECT-TYPE
      SYNTAX      Counter32
      UNITS       "Packets"
      MAX-ACCESS  read-only
      STATUS      current
      DESCRIPTION
         "A counter of the total number of IPv6 packets
          received by the SMF process on this device
          on this interface that the device inserted the
          DPD header option.

          There is the potential for a counter discontinuity
          in this object if the system SMF process has been
          disabled and later enabled on this interface.
          In order to check for the occurrence of such a
          discontinuity when monitoring this counter object,
          it is recommended that the smfCfgIfSmfUpTime
          object also be monitored."
   ::= { smfPerfIpv6InterfacePerfEntry 7 }

   --
   -- Notifications
   --

smfMIBNotifObjects OBJECT IDENTIFIER ::= { smfMIBNotifications 0 }
smfMIBNotifControl OBJECT IDENTIFIER ::= { smfMIBNotifications 1 }

   -- smfMIBNotifObjects



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RFC 7367                       The SMF-MIB                  October 2014


   smfNotifAdminStatusChange NOTIFICATION-TYPE
          OBJECTS { smfCfgRouterIDAddrType, -- The originator of
                                            --   the notification.
                    smfCfgRouterID,         -- The originator of
                                            --   the notification.
                    smfCfgAdminStatus       -- The new status of the
                                            --   SMF process.
                  }
          STATUS       current
          DESCRIPTION
             "smfCfgAdminStatusChange is a notification sent when
              the 'smfCfgAdminStatus' object changes."
          ::= { smfMIBNotifObjects 1 }

   smfNotifConfiguredOpModeChange NOTIFICATION-TYPE
          OBJECTS { smfCfgRouterIDAddrType, -- The originator of
                                            --   the notification.
                    smfCfgRouterID,         -- The originator of
                                            --   the notification.
                    smfCfgOperationalMode   -- The new Operations
                                            --   Mode of the SMF
                                            --   process.
                  }
          STATUS       current
          DESCRIPTION
             "smfNotifConfiguredOpModeChange is a notification
              sent when the 'smfCfgOperationalMode' object
              changes."
          ::= { smfMIBNotifObjects 2 }

   smfNotifIfAdminStatusChange NOTIFICATION-TYPE
          OBJECTS { smfCfgRouterIDAddrType, -- The originator of
                                            --   the notification.
                    smfCfgRouterID,         -- The originator of
                                            --   the notification.
                    ifName,                 -- The interface whose
                                            --   status has changed.
                    smfCfgIfAdminStatus     -- The new status of the
                                            --   SMF interface.
                  }
          STATUS       current
          DESCRIPTION
             "smfCfgIfAdminStatusChange is a notification sent when
              the 'smfCfgIfAdminStatus' object changes."
          ::= { smfMIBNotifObjects 3 }

    smfNotifDpdMemoryOverflowEvent NOTIFICATION-TYPE
          OBJECTS { smfCfgRouterIDAddrType,   -- The originator of



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                                              --   the notification.
                    smfCfgRouterID,           -- The originator of
                                              --   the notification.
                    smfStateDpdMemoryOverflow -- The counter of
                                              --   the overflows.
             }
          STATUS       current
          DESCRIPTION
             "smfNotifDpdMemoryOverflowEvents is sent when the
              number of memory overflow events exceeds
              the 'smfNotifDpdMemoryOverflowThreshold' within the
              previous number of seconds defined by the
              'smfNotifDpdMemoryOverflowWindow'."
          ::= { smfMIBNotifObjects 4 }

   -- smfMIBNotifControl
   smfNotifDpdMemoryOverflowThreshold OBJECT-TYPE
          SYNTAX       Integer32 (0..255)
          UNITS        "Events"
          MAX-ACCESS   read-write
          STATUS       current
          DESCRIPTION
             "A threshold value for the
              'smfNotifDpdmemoryOverflowEvents' object.
              If the number of occurrences exceeds
              this threshold within the previous
              number of seconds
              'smfNotifDpdMemoryOverflowWindow',
              then the 'smfNotifDpdMemoryOverflowEvent'
              notification is sent.

              The default value for this object is
              '1'."
          DEFVAL { 1 }
           ::= { smfMIBNotifControl 1 }

   smfNotifDpdMemoryOverflowWindow OBJECT-TYPE
          SYNTAX       TimeTicks
          MAX-ACCESS   read-write
          STATUS       current
          DESCRIPTION
             "A time window value for the
              'smfNotifDpdmemoryOverflowEvents' object.
              If the number of occurrences exceeds
              the 'smfNotifDpdMemoryOverflowThreshold'
              within the previous number of seconds
              'smfNotifDpdMemoryOverflowWindow',
              then the 'smfNotifDpdMemoryOverflowEvent'



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              notification is sent.

              The default value for this object is
              '1'."
          DEFVAL { 1 }
           ::= { smfMIBNotifControl 2 }

   --
   -- Compliance Statements
   --

   smfCompliances  OBJECT IDENTIFIER ::= { smfMIBConformance 1 }
   smfMIBGroups    OBJECT IDENTIFIER ::= { smfMIBConformance 2 }

   smfBasicCompliance  MODULE-COMPLIANCE
      STATUS current
      DESCRIPTION "The basic implementation requirements for
                   managed network entities that implement
                   the SMF RSSA process."
      MODULE  -- this module
      MANDATORY-GROUPS { smfCapabObjectsGroup,
                         smfConfigObjectsGroup }
   ::= { smfCompliances 1 }

   smfFullCompliance MODULE-COMPLIANCE
      STATUS current
      DESCRIPTION "The full implementation requirements for
                   managed network entities that implement
                   the SMF RSSA process."
      MODULE  -- this module
      MANDATORY-GROUPS { smfCapabObjectsGroup,
                         smfConfigObjectsGroup,
                         smfStateObjectsGroup,
                         smfPerfObjectsGroup,
                         smfNotifObjectsGroup,
                         smfNotificationsGroup
                       }
   ::= { smfCompliances 2 }

   --
   -- Units of Conformance
   --

   smfCapabObjectsGroup OBJECT-GROUP
      OBJECTS {
              smfCapabilitiesOpModeID,
              smfCapabilitiesRssaID
      }



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      STATUS  current
      DESCRIPTION
         "Set of SMF configuration objects implemented
          in this module."
   ::= { smfMIBGroups 1 }

   smfConfigObjectsGroup OBJECT-GROUP
      OBJECTS {
              smfCfgAdminStatus,
              smfCfgSmfSysUpTime,
              smfCfgRouterIDAddrType,
              smfCfgRouterID,
              smfCfgOperationalMode,
              smfCfgRssaMember,
              smfCfgIpv4Dpd,
              smfCfgIpv6Dpd,
              smfCfgMaxPktLifetime,
              smfCfgDpdEntryMaxLifetime,
              smfCfgNhdpRssaMesgTLVIncluded,
              smfCfgNhdpRssaAddrBlockTLVIncluded,

              smfCfgAddrForwardingGroupName,
              smfCfgAddrForwardingAddrType,
              smfCfgAddrForwardingAddress,
              smfCfgAddrForwardingAddrPrefixLength,
              smfCfgAddrForwardingStatus,

              smfCfgIfAdminStatus,
              smfCfgIfSmfUpTime,
              smfCfgIfRowStatus
      }
      STATUS  current
      DESCRIPTION
         "Set of SMF configuration objects implemented
          in this module."
   ::= { smfMIBGroups 2 }

   smfStateObjectsGroup  OBJECT-GROUP
      OBJECTS {
              smfStateNodeRsStatusIncluded,
              smfStateDpdMemoryOverflow,

              smfStateNeighborRSSA,
              smfStateNeighborNextHopInterface
      }
      STATUS  current
      DESCRIPTION
         "Set of SMF state objects implemented



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          in this module."
   ::= { smfMIBGroups 3 }

   smfPerfObjectsGroup  OBJECT-GROUP
      OBJECTS {
              smfPerfIpv4MultiPktsRecvTotal,
              smfPerfIpv4MultiPktsForwardedTotal,
              smfPerfIpv4DuplMultiPktsDetectedTotal,
              smfPerfIpv4DroppedMultiPktsTTLExceededTotal,
              smfPerfIpv4TTLLargerThanPreviousTotal,

              smfPerfIpv6MultiPktsRecvTotal,
              smfPerfIpv6MultiPktsForwardedTotal,
              smfPerfIpv6DuplMultiPktsDetectedTotal,
              smfPerfIpv6DroppedMultiPktsTTLExceededTotal,
              smfPerfIpv6TTLLargerThanPreviousTotal,
              smfPerfIpv6HAVAssistsReqdTotal,
              smfPerfIpv6DpdHeaderInsertionsTotal,

              smfPerfIpv4MultiPktsRecvPerIf,
              smfPerfIpv4MultiPktsForwardedPerIf,
              smfPerfIpv4DuplMultiPktsDetectedPerIf,
              smfPerfIpv4DroppedMultiPktsTTLExceededPerIf,
              smfPerfIpv4TTLLargerThanPreviousPerIf,
              smfPerfIpv6MultiPktsRecvPerIf,
              smfPerfIpv6MultiPktsForwardedPerIf,
              smfPerfIpv6DuplMultiPktsDetectedPerIf,
              smfPerfIpv6DroppedMultiPktsTTLExceededPerIf,
              smfPerfIpv6TTLLargerThanPreviousPerIf,
              smfPerfIpv6HAVAssistsReqdPerIf,
              smfPerfIpv6DpdHeaderInsertionsPerIf
      }
      STATUS  current
      DESCRIPTION
         "Set of SMF performance objects implemented
          in this module by total and per interface."
   ::= { smfMIBGroups 4 }

   smfNotifObjectsGroup  OBJECT-GROUP
      OBJECTS {
              smfNotifDpdMemoryOverflowThreshold,
              smfNotifDpdMemoryOverflowWindow
      }
      STATUS  current
      DESCRIPTION
         "Set of SMF notification control
          objects implemented in this module."
   ::= { smfMIBGroups 5 }



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   smfNotificationsGroup  NOTIFICATION-GROUP
      NOTIFICATIONS {
              smfNotifAdminStatusChange,
              smfNotifConfiguredOpModeChange,
              smfNotifIfAdminStatusChange,
              smfNotifDpdMemoryOverflowEvent
      }
      STATUS  current
      DESCRIPTION
         "Set of SMF notifications implemented
          in this module."
   ::= { smfMIBGroups 6 }


   END

8.  IANA-SMF-MIB Definitions

   This section contains the IANA-SMF-MIB module.  This MIB module
   defines two Textual Conventions for which IANA SHOULD maintain and
   keep synchronized with the registry identified below within the
   IANAsmfOpModeIdTC and the IANAsmfRssaIdTC TEXTUAL-CONVENTIONs.

   The IANAsmfOpModeIdTC defines an index that identifies through
   reference to a specific SMF operations mode.  The index is an integer
   valued named-number enumeration consisting of an integer and label.
   IANA is to create and maintain this Textual Convention.  Future
   assignments are made to anyone on a first come, first served basis.
   There is no substantive review of the request, other than to ensure
   that it is well-formed and does not duplicate an existing assignment.
   However, requests must include a minimal amount of clerical
   information, such as a point of contact (including an email address)
   and a brief description of the method being identified as a new SMF
   operations mode.

   The IANAsmfRssaIdTC defines an index that identifies through
   reference to a specific Reduced Set Selection Algorithm (RSSA).  The
   index is an integer valued named-number enumeration consisting of an
   integer and label.  IANA is to create and maintain this Textual
   Convention.

   Future assignments to the IANAsmfRssaIdTC for the index range 5-127
   require an RFC publication (either as an IETF submission or as an
   Independent submission [RFC5742]).  The category of RFC MUST be
   Standards Track.  The specific RSSAs MUST be documented in sufficient
   detail so that interoperability between independent implementations
   is possible.




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   Future assignments to the IANAsmfRssaIdTC for the index range 128-239
   are private or local use only, with the type and purpose defined by
   the local site.  No attempt is made to prevent multiple sites from
   using the same value in different (and incompatible) ways.  There is
   no need for IANA to review such assignments (since IANA will not
   record these), and assignments are not generally useful for broad
   interoperability.  It is the responsibility of the sites making use
   of the Private Use range to ensure that no conflicts occur (within
   the intended scope of use).

   Future assignments to the IANAsmfRssaIdTC for the index range 240-255
   are to facilitate experimentation.  These require an RFC publication
   (either as an IETF submission or as an Independent submission
   [RFC5742]).  The category of RFC MUST be Experimental.  The RSSA
   algorithms MUST be documented in sufficient detail so that
   interoperability between independent implementations is possible.

   This MIB module references [RFC3626], [RFC5614], [RFC6621], and
   [RFC7181].

   IANA-SMF-MIB DEFINITIONS ::= BEGIN

   IMPORTS
       MODULE-IDENTITY, mib-2
                 FROM SNMPv2-SMI     -- RFC 2578
       TEXTUAL-CONVENTION
                 FROM SNMPv2-TC;     -- RFC 2579

   ianaSmfMIB MODULE-IDENTITY
       LAST-UPDATED "201410100000Z"  -- October 10, 2014
       ORGANIZATION "IANA"
       CONTACT-INFO "Internet Assigned Numbers Authority

                     Postal: ICANN
                             12025 Waterfront Drive, Suite 300
                             Los Angeles, CA 90094-2536
                             United States

                     Tel:    +1 310 301 5800
                     EMail:  iana@iana.org"
       DESCRIPTION  "This MIB module defines the
                     IANAsmfOpModeIdTC and IANAsmfRssaIdTC
                     Textual Conventions, and thus the
                     enumerated values of the
                     smfCapabilitiesOpModeID and
                     smfCapabilitiesRssaID objects defined
                     in the SMF-MIB."
       REVISION     "201410100000Z"  -- October 10, 2014



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       DESCRIPTION
          "Initial version of this MIB as published in RFC 7367.

           Copyright (c) 2014 IETF Trust and the persons identified as
           authors of the code.  All rights reserved.

           Redistribution and use in source and binary forms, with or
           without modification, is permitted pursuant to, and subject
           to the license terms contained in, the Simplified BSD License
           set forth in Section 4.c of the IETF Trust's Legal Provisions
           Relating to IETF Documents
           (http://trustee.ietf.org/license-info).
          "
       ::= { mib-2 225 }

   IANAsmfOpModeIdTC ::= TEXTUAL-CONVENTION
       STATUS       current
       DESCRIPTION
           "An index that identifies through reference to a specific
            SMF operations mode.  There are basically three styles
            of SMF operation with reduced relay sets currently
            identified:
              Independent operation 'independent(1)' -
                  SMF performs its own relay
                  set selection using information from an associated
                  MANET NHDP process.

              CDS-aware unicast routing operation 'routing(2)'-
                  a coexistent unicast routing
                  protocol provides dynamic relay
                  set state based upon its own control plane
                  Connected Dominating Set (CDS) or neighborhood
                  discovery information.

              Cross-layer operation 'crossLayer(3)' -
                  SMF operates using neighborhood
                  status and triggers from a
                  cross-layer information base for dynamic relay
                  set selection and maintenance.

            IANA MUST update this Textual Convention accordingly.

            The definition of this Textual Convention with the
            addition of newly assigned values is updated
            periodically by the IANA, in the
            IANA-maintained registries.  (The
            latest arrangements can be obtained by contacting the
            IANA.)



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            Requests for new values SHOULD be made to IANA via
            email (iana@iana.org)."
      REFERENCE
           "See Section 7.2 'Reduced Relay Set Forwarding',
            and the Appendices A, B, and C in
            RFC 6621 - 'Simplified Multicast Forwarding',
            Macker, J., Ed., May 2012."
       SYNTAX  INTEGER {
                        independent (1),
                        routing (2),
                        crossLayer (3)
                        -- future (4-255)
       }

   IANAsmfRssaIdTC ::= TEXTUAL-CONVENTION
       STATUS       current
       DESCRIPTION
           "An index that identifies through reference to specific
            RSSAs.  Several are currently defined
            in the Appendices A, B, and C of RFC 6621.

            Examples of RSSAs already identified within
            this Textual Convention (TC) are:

              Classical Flooding (cF(1)) - is the standard
                 flooding algorithm where each node in the next
                 retransmits the information on each of its interfaces.

              Source-Based Multipoint Relay (sMPR(2)) -
                 this algorithm is used by Optimized Link State Routing
                 (OLSR) and OLSR version 2 (OLSRv2) protocols for the
                 relay of link state updates and other control
                 information (RFC 3626, RFC 7181).  Since each router
                 picks its neighboring relays independently, sMPR
                 forwarders depend upon previous hop information
                 (e.g., source Media Access Control (MAC) address) to
                 operate correctly.

              Essential Connected Dominating Set (eCDS(3)) -
                 defined in RFC 5614, this algorithm forms a single
                 CDS mesh for the SMF operating region.  Its
                 packet-forwarding rules are not dependent upon
                 previous hop knowledge in contrast to sMPR.

              Multipoint Relay Connected Dominating Set (mprCDS(4)) -
                 This algorithm is an extension to the basic sMPR
                 election algorithm that results in a shared
                 (non-source-specific) SMF CDS.  Thus, its forwarding



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                 rules are not dependent upon previous hop information,
                 similar to eCDS.

            IANA MUST update this Textual Convention accordingly.

            The definition of this Textual Convention with the
            addition of newly assigned values is updated
            periodically by the IANA, in the
            IANA-maintained registries.  (The
            latest arrangements can be obtained by contacting the
            IANA.)

            Requests for new values SHOULD be made to IANA via
            email (iana@iana.org)."
       REFERENCE
          "For example, see:

           Section 8.1.1. 'SMF Message TLV Type' and the Appendices
           A, B, and C in
           RFC 6621 - 'Simplified Multicast Forwarding',
           Macker, J., Ed., May 2012.

           RFC 3626 - Clausen, T., Ed., and P. Jacquet, Ed., 'Optimized
           Link State Routing Protocol (OLSR)', October 2003.

           RFC 5614 - Ogier, R. and P. Spagnolo, 'Mobile Ad Hoc
           Network (MANET) Extension of OSPF Using Connected
           Dominating Set (CDS) Flooding', August 2009.

           RFC 7181 - Clausen, T., Dearlove, C., Jacquet, P., and
           U. Herberg, 'The Optimized Link State Routing Protocol
           Version 2', April 2014."
       SYNTAX      INTEGER {
                           cF(1),
                           sMPR(2),
                           eCDS(3),
                           mprCDS(4)
                           -- future(5-127)
                           -- noStdAction(128-239)
                           -- experimental(240-255)
                   }

   END








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9.  Security Considerations

   This section discusses security implications of the choices made in
   this SMF-MIB module.

   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  'smfCfgAdminStatus' - this writable configuration object controls
      the operational status of the SMF process.  If this setting is
      configured inconsistently across the MANET multicast domain, then
      delivery of multicast data may be inconsistent across the domain;
      some nodes may not receive multicast data intended for them.

   o  'smfCfgRouterIDAddrType' and 'smfCfgRouterID' - these writable
      configuration objects define the ID of the SMF process.  These
      objects should be configured with a routable address defined on
      the local SMF device.  The smfCfgRouterID is a logical
      identification that MUST be configured as unique across
      interoperating SMF neighborhoods, and it is RECOMMENDED to be
      chosen as the numerically largest address contained in a node's

      'Neighbor Address List' as defined in NHDP.  A smfCfgRouterID MUST
      be unique within the scope of the operating MANET network
      regardless of the method used for selecting it.  If these objects
      are misconfigured or configured inconsistently across the MANET,
      then the ability of various RSSAs, e.g., eCDS, may be compromised.
      This would potentially result in some routers within the MANET not
      receiving multicast packets destine to them.  Hence, intentionally
      misconfiguring these objects could pose a form of Denial-of-
      Service (DoS) attack against the MANET.

   o  'smfCfgOpMode' - this writable configuration object defines the
      operational mode of the SMF process.  The operational mode defines
      how the SMF process receives its data to form its local estimate
      of the CDS.  It is recommended that the value for this object be
      set consistently across the MANET to ensure proper operation of
      the multicast packet forwarding.  If the value for this object is
      set inconsistently across the MANET, the result may be that
      multicast packet delivery will be compromised within the MANET.
      Hence, intentionally misconfiguring this object could pose a form
      DoS attack against the MANET.




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   o  'smfCfgRssa' - this writable configuration object sets the
      specific RSSA for the SMF process.  If this object is set
      inconsistently across the MANET domain, multicast delivery of data
      will likely fail.  Hence, intentionally misconfiguring this object
      could pose a form DoS attack against the MANET.

   o  'smfCfgRssaMember' - this writable configuration object sets the
      'interest' of the local SMF node in participating in the CDS.
      Setting this object to 'never(3)' on a highly connected device
      could lead to frequent island formation.  Setting this object to
      'always(2)' could support data ex-filtration from the MANET
      domain.

   o  'smfCfgIpv4Dpd' - this writable configuration object sets the
      duplicate packet detection method, i.e., H-DPD or I-DPD, for
      forwarding of IPv4 multicast packets.  Forwarders may operate with
      mixed H-DPD and I-DPD modes as long as they consistently perform
      the appropriate DPD routines outlined in [RFC6621].  However, it
      is RECOMMENDED that a deployment be configured with a common mode
      for operational consistency.

   o  'smfCfgIpv6Dpd' - this writable configuration object sets the
      duplicate packet detection method for the forwarding of IPv6
      multicast packets.  Since IPv6 SMF does specify an option header,
      the interoperability constraints are not as loose as in the IPv4
      version, and forwarders SHOULD NOT operate with mixed H-DPD and
      I-DPD modes.  Hence, the value for this object SHOULD be
      consistently set within the forwarders comprising the MANET, else
      inconsistent forwarding may result unnecessary multicast packet
      dropping.

   o  'smfCfgMaxPktLifetime' - this writable configuration object sets
      the estimate of the network packet traversal time.  If set too
      small, this could lead to poor multicast data delivery ratios
      throughout the MANET domain.  This could serve as a form of DoS
      attack if this object value is set too small.

   o  'smfCfgDpdEntryMaxLifetime' - this writable configuration object
      sets the maximum lifetime (in seconds) for the cached DPD records
      for the combined IPv4 and IPv6 methods.  If the memory is running
      low prior to the MaxLifetime being exceeded, the local SMF devices
      should purge the oldest records first.  If this object value is
      set too small, then the effectiveness of the SMF DPD algorithms
      may become greatly diminished causing a higher than necessary
      packet load on the MANET.






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   o  'smfCfgNhdpRssaMesgTLVIncluded' - this writable configuration
      object indicates whether or not the associated NHDP messages
      include the RSSA Message TLV.  It is highly RECOMMENDED that this
      object be set to 'true(1)' when the SMF operation mode is set to
      independent as this information will inform the local forwarder of
      the RSSA implemented in neighboring forwarders and is used to
      ensure consistent forwarding across the MANET.  While it is
      possible that SMF neighbors MAY be configured differently with
      respect to the RSSA and still operate cooperatively, but these
      cases will vary dependent upon the algorithm types designated and
      this situation SHOULD be avoided.

   o  'smfCfgNhdpRssaAddrBlockTLVIncluded' - this writable configuration
      object indicates whether or not the associated NHDP messages
      include the RSSA Address Block TLV.  The
      smfNhdpRssaAddrBlockTLVIncluded is optional in all cases as it
      depends on the existence of an address block that may not be
      present.  If this SMF device is configured with NHDP, then this
      object should be set to 'true(1)' as this TLV enables CDS relay
      algorithm operation and configuration to be shared among 2-hop
      neighborhoods.  Some relay algorithms require 2-hop neighbor
      configuration in order to correctly select relay sets.

   o  'smfCfgAddrForwardingTable' - the writable configuration objects
      in this table indicate which multicast IP addresses are to be
      forwarded by this SMF node.  Misconfiguration of rows within this
      table can limit the ability of this SMF device to properly forward
      multicast data.

   o  'smfCfgInterfaceTable' - the writable configuration objects in
      this table indicate which SMF node interfaces are participating in
      the SMF packet forwarding process.  Misconfiguration of rows
      within this table can limit the ability of this SMF device to
      properly forward multicast data.

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

   o  'smfNodeRsStatusIncluded' - this readable state object indicates
      whether or not this SMF node is part of the CDS.  Being part of
      the CDS makes this node a distinguished device.  It could be
      exploited for data ex-filtration, or DoS attacks.




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   o  'smfStateNeighborTable' - the readable state objects in this table
      indicate current neighbor nodes to this SMF node.  Exposing this
      information to an attacker could allow the attacker easier access
      to the larger MANET domain.

   The remainder of the objects in the SMF-MIB module are performance
   counter objects.  While these give an indication of the activity of
   the SMF process on this node, it is not expected that exposing these
   values poses a security risk to the MANET network.

   SNMP versions prior to SNMPv3 did not include adequate security.
   Even if the network itself is secure (for example by using IPsec),
   even then, 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.

   Implementations SHOULD provide the security features described by the
   SNMPv3 framework (see [RFC3410]), and implementations claiming
   compliance to the SNMPv3 standard MUST include full support for
   authentication and privacy via the User-based Security Model (USM)
   [RFC3414] with the AES cipher algorithm [RFC3826].  Implementations
   MAY also provide support for the Transport Security Model (TSM)
   [RFC5591] in combination with a secure transport such as SSH
   [RFC5592] or TLS/DTLS [RFC6353].

   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.

10.  Applicability Statement

   This document describes objects for configuring parameters of the
   Simplified Multicast Forwarding [RFC6621] process on a Mobile Ad Hoc
   Network (MANET) router.  This MIB module, denoted SMF-MIB, also
   reports state and performance information and notifications.  This
   section provides some examples of how this MIB module can be used in
   MANET network deployments.  A fuller discussion of MANET network
   management use cases and challenges is out of scope for this
   document.

   SMF is designed to allow MANET routers to forward IPv4 and IPv6
   packets over the MANET and cover the MANET nodes through the
   automatic discovery of efficient estimates of the Minimum Connected
   Dominating Set (MCDS) of nodes within the MANET.  The MCDS is



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   estimated using the Relay Set Selection Algorithms (RSSAs) discussed
   within this document.  In the following, three scenarios are listed
   where this MIB module is useful:

   o  For a Parking Lot Initial Configuration Situation - it is common
      for the vehicles comprising the MANET being forward deployed at a
      remote location, e.g., the site of a natural disaster, to be off-
      loaded in a parking lot where an initial configuration of the
      networking devices is performed.  The configuration is loaded into
      the devices from a fixed-location Network Operations Center (NOC)
      at the parking lot, and the vehicles are stationary at the parking
      lot while the configuration changes are made.  Standards-based
      methods for configuration management from the co-located NOC are
      necessary for this deployment option.  The set of interesting
      configuration objects for the SMF process are listed within this
      MIB module.

   o  For Mobile vehicles with Low Bandwidth Satellite Link to a Fixed
      NOC - Here the vehicles carrying the MANET routers carry multiple
      wireless interfaces, one of which is a relatively low-bandwidth
      on-the-move satellite connection that interconnects a fix NOC to
      the nodes of the MANET.  Standards-based methods for monitoring
      and fault management from the fixed NOC are necessary for this
      deployment option.

   o  For Fixed NOC and Mobile Local Manager in Larger Vehicles - for
      larger vehicles, a hierarchical network management arrangement is
      useful.  Centralized network management is performed from a fixed
      NOC while local management is performed locally from within the
      vehicles.  Standards-based methods for configuration, monitoring,
      and fault management are necessary for this deployment option.

   Here we provide an example of the simplest of configurations to
   establish an operational multicast forwarding capability in a MANET.
   This discussion only identifies the configuration necessary through
   the SMF-MIB module and assumes that other configuration has occurred.
   Assume that the MANET is to support only IPv4 addressing and that the
   MANET nodes are to be configured in the context of the Parking Lot
   Initialization case above.  Then, the SMF-MIB module defines ten
   configuration OIDs and two configuration tables, i.e., the
   smfCfgAddrForwardingTable and the smfCfgInterfaceTable.  Of the ten
   OIDs defined, all but one, i.e., the smfCfgRouterID, have DEFVAL
   clauses that allow for a functional configuration of the SMF process
   within the MANET.  The smfCfgRouterIDType defaults to 'ipv4' so the
   smfCfgRouterID can be set as, e.g., (assuming the use of the Net-SNMP
   toolkit),:

   snmpset [options] <smfCfgRouterID_OID>.0 a 192.0.2.100



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   If the smfCfgAddrForwardingTable is left empty, then the SMF local
   forwarder will forward all multicast addresses.  So this table does
   not require configuration if you want to have the MANET forward all
   multicast addresses.

   All that remains is to configure at least one row in the
   smfCfgInterfaceTable.  Assume that the node has a wireless interface
   with an <ifName>='wlan0' and an <ifIndex>='1'.  All of the objects in
   the rows of the smfCfgInterfaceTable have a DEFVAL clause; hence,
   only the RowStatus object needs to be set.  So the SMF process will
   be activated on the 'wlan0' interface by the following network
   manager snmpset command:

   snmpset [options] <smfCfgIfRowStatus>.1 i active(1)

   At this point, the configured forwarder will begin a Classical
   Flooding algorithm to forward all multicast addresses IPv4 packets it
   receives.

   To provide a more efficient multicast forwarding within the MANET,
   the network manager could walk the smfCapabilitiesTable to identify
   other SMF Operational Modes, for example:

   snmpwalk [options] <smfCapabilitiesTable>

   SMF-MIB::smfCapabilitiesIndex.1 = INTEGER: 1

   SMF-MIB::smfCapabilitiesIndex.2 = INTEGER: 2

   SMF-MIB::smfCapabilitiesOpModeID.1 = INTEGER: cfOnly(1)

   SMF-MIB::smfCapabilitiesOpModeiD.2 = INTEGER: independent(2)

   SMF-MIB::smfCapabilitiesRssaID.1 = INTEGER: cF(1)

   SMF-MIB::smfCapabilitiesRssaID.2 = INTEGER: eCDS(3)

   In this example, the forwarding device also supports the Essential
   Connected Dominating Set (eCDS) RSSA with the forwarder in the
   'independent(2)' operational mode.  If the network manager were to
   then issue an snmpset, for example:

   snmpset [options] <smfCfgOperationalMode>.0 i 2

   then the local forwarder would switch its forwarding behavior from
   Classical Flooding to the more efficient eCDS flooding.





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11.  IANA Considerations

   This document defines two MIB modules:

   1.  SMF-MIB is defined in Section 7 and is an experimental MIB
       module.

   2.  IANA-SMF-MIB is defined in Section 8 and is an IANA MIB module
       that IANA maintains.

   Thus, IANA has completed three actions:

   IANA has allocated an OBJECT IDENTIFIER value and recorded it in the
   SMI Numbers registry in the subregistry called "SMI Experimental
   Codes" under the experimental branch (1.3.6.1.3).

              Decimal | Name    | Description   | Reference
              --------+---------+---------------+------------
               126    | smfMib  | SMF-MIB       | [RFC7367]

   IANA has allocated an OBJECT IDENTIFIER value and recorded it in the
   SMI Numbers registry in the subregistry called "SMI Network
   Management MGMT Codes Internet-standard MIB" under the mib-2 branch
   (1.3.6.1.2.1).

              Decimal | Name          | Description     | Reference
              --------+---------------+-----------------+------------
               225    | ianaSmfMIB    | IANA-SMF-MIB    | [RFC7367]
   IANA maintains a MIB module called ianaSmfMIB and has populated it
   with the initial MIB module defined in Section 8 of this document by
   creating a new entry in the registry "IANA Maintained MIBs" called
   "IANA-SMF-MIB".

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,
              <http://www.rfc-editor.org/info/rfc2119>.

   [RFC2578]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Structure of Management Information
              Version 2 (SMIv2)", STD 58, RFC 2578, April 1999,
              <http://www.rfc-editor.org/info/rfc2578>.






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   [RFC2579]  McCloghrie, K., Ed., Perkins, D., Ed., and J.
              Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD
              58, RFC 2579, April 1999,
              <http://www.rfc-editor.org/info/rfc2579>.

   [RFC2580]  McCloghrie, K., Perkins, D., and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999, <http://www.rfc-editor.org/info/rfc2580>.

   [RFC2863]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group
              MIB", RFC 2863, June 2000,
              <http://www.rfc-editor.org/info/rfc2863>.

   [RFC3410]  Case, J., Mundy, R., Partain, D., and B. Stewart,
              "Introduction and Applicability Statements for Internet-
              Standard Management Framework", RFC 3410, December 2002,
              <http://www.rfc-editor.org/info/rfc3410>.

   [RFC3411]  Harrington, D., Presuhn, R., and B. Wijnen, "An
              Architecture for Describing Simple Network Management
              Protocol (SNMP) Management Frameworks", STD 62, RFC 3411,
              December 2002, <http://www.rfc-editor.org/info/rfc3411>.

   [RFC3414]  Blumenthal, U. and B. Wijnen, "User-based Security Model
              (USM) for version 3 of the Simple Network Management
              Protocol (SNMPv3)", STD 62, RFC 3414, December 2002,
              <http://www.rfc-editor.org/info/rfc3414>.

   [RFC3418]  Presuhn, R., "Management Information Base (MIB) for the
              Simple Network Management Protocol (SNMP)", STD 62, RFC
              3418, December 2002,
              <http://www.rfc-editor.org/info/rfc3418>.

   [RFC3626]  Clausen, T. and P. Jacquet, "Optimized Link State Routing
              Protocol (OLSR)", RFC 3626, October 2003,
              <http://www.rfc-editor.org/info/rfc3626>.

   [RFC3826]  Blumenthal, U., Maino, F., and K. McCloghrie, "The
              Advanced Encryption Standard (AES) Cipher Algorithm in the
              SNMP User-based Security Model", RFC 3826, June 2004,
              <http://www.rfc-editor.org/info/rfc3826>.

   [RFC4001]  Daniele, M., Haberman, B., Routhier, S., and J.
              Schoenwaelder, "Textual Conventions for Internet Network
              Addresses", RFC 4001, February 2005,
              <http://www.rfc-editor.org/info/rfc4001>.





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   [RFC5591]  Harrington, D. and W. Hardaker, "Transport Security Model
              for the Simple Network Management Protocol (SNMP)", STD
              78, RFC 5591, June 2009,
              <http://www.rfc-editor.org/info/rfc5591>.

   [RFC5592]  Harrington, D., Salowey, J., and W. Hardaker, "Secure
              Shell Transport Model for the Simple Network Management
              Protocol (SNMP)", RFC 5592, June 2009,
              <http://www.rfc-editor.org/info/rfc5592>.

   [RFC5614]  Ogier, R. and P. Spagnolo, "Mobile Ad Hoc Network (MANET)
              Extension of OSPF Using Connected Dominating Set (CDS)
              Flooding", RFC 5614, August 2009,
              <http://www.rfc-editor.org/info/rfc5614>.

   [RFC5742]  Alvestrand, H. and R. Housley, "IESG Procedures for
              Handling of Independent and IRTF Stream Submissions", BCP
              92, RFC 5742, December 2009,
              <http://www.rfc-editor.org/info/rfc5742>.

   [RFC6353]  Hardaker, W., "Transport Layer Security (TLS) Transport
              Model for the Simple Network Management Protocol (SNMP)",
              STD 78, RFC 6353, July 2011,
              <http://www.rfc-editor.org/info/rfc6353>.

   [RFC6621]  Macker, J., "Simplified Multicast Forwarding", RFC 6621,
              May 2012, <http://www.rfc-editor.org/info/rfc6621>.

   [RFC7181]  Clausen, T., Dearlove, C., Jacquet, P., and U. Herberg,
              "The Optimized Link State Routing Protocol Version 2", RFC
              7181, April 2014,
              <http://www.rfc-editor.org/info/rfc7181>.

12.2.  Informative References

   [RFC4293]  Routhier, S., "Management Information Base for the
              Internet Protocol (IP)", RFC 4293, April 2006,
              <http://www.rfc-editor.org/info/rfc4293>.

   [RFC5132]  McWalter, D., Thaler, D., and A. Kessler, "IP Multicast
              MIB", RFC 5132, December 2007,
              <http://www.rfc-editor.org/info/rfc5132>.









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Acknowledgements

   The authors would like to acknowledge the valuable comments from Sean
   Harnedy in the early phases of the development of this MIB module.
   The authors would like to thank Adrian Farrel, Dan Romascanu, Juergen
   Shoenwaelder, Stephen Hanna, and Brian Haberman for their careful
   review of this document and their insightful comments.  We also wish
   to thank the entire MANET WG for many reviews of this document.
   Further, the authors would like to thank James Nguyen for his careful
   review and comments on this MIB module and his work on the
   definitions of the follow-on MIB modules to configure specific RSSAs
   related to SMF.  Further, the authors would like to acknowledge the
   work of James Nguyen, Brian Little, Ryan Morgan, and Justin Dean on
   their software development of the SMF-MIB.

Contributors

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

Authors' Addresses

   Robert G. Cole
   US Army CERDEC
   6010 Frankford Road
   Aberdeen Proving Ground, Maryland  21005
   United States

   Phone: +1 443 395 8744
   EMail: robert.g.cole@us.army.mil


   Joseph Macker
   Naval Research Laboratory
   Washington, D.C.  20375
   United States

   EMail: macker@itd.nrl.navy.mil


   Brian Adamson
   Naval Research Laboratory
   Washington, D.C.  20375
   United States

   EMail: adamson@itd.nrl.navy.mil




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