rfc2932.txt

来自「<VC++网络游戏建摸与实现>源代码」· 文本 代码 · 共 1,516 行 · 第 1/4 页

Network Working Group                                      K. McCloghrie
Request for Comments: 2932                                 cisco Systems
Category: Standards Track                                   D. Farinacci
                                                        Procket Networks
                                                               D. Thaler
                                                               Microsoft
                                                            October 2000


                       IPv4 Multicast Routing MIB

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

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 managed objects used for managing IP
   Multicast Routing for IPv4, independent of the specific multicast
   routing protocol in use.

Table of Contents

    1 Introduction .................................................  2
    2 The SNMP Management Framework ................................  2
    3 Overview .....................................................  3
    4 Definitions ..................................................  4
    5 IANA Considerations .......................................... 22
    6 Security Considerations ...................................... 22
    7 Intellectual Property Notice ................................. 23
    8 Acknowledgements ............................................. 23
    9 Authors' Addresses ........................................... 24
   10 References ................................................... 25
   11 Full Copyright Statement ..................................... 27







McCloghrie, et al.          Standards Track                     [Page 1]

RFC 2932               IPv4 Multicast Routing MIB           October 2000


1.  Introduction

   This MIB describes objects used for managing IP Multicast Routing
   [16], independent of the specific multicast routing protocol [17-21]
   in use.  Managed objects specific to particular multicast routing
   protocols are specified elsewhere.  Similarly, this MIB does not
   support management of multicast routing for other address families,
   including IPv6.  Such management may be supported by other MIBs.

2.  The SNMP Management Framework

   The SNMP Management Framework presently consists of five major
   components:

   o    An overall architecture, described in RFC 2571 [1].

   o    Mechanisms for describing and naming objects and events for the
        purpose of management. The first version of this Structure of
        Management Information (SMI) is called SMIv1 and described in
        STD 16, RFC 1155 [2], STD 16, RFC 1212 [3] and RFC 1215 [4].
        The second version, called SMIv2, is described in STD 58, RFC
        2578 [5], STD 58, RFC 2579 [6] and STD 58, RFC 2580 [7].

   o    Message protocols for transferring management information.  The
        first version of the SNMP message protocol is called SNMPv1 and
        described in STD 15, RFC 1157 [8].  A second version of the SNMP
        message protocol, which is not an Internet standards track
        protocol, is called SNMPv2c and described in RFC 1901 [9] and
        RFC 1906 [10].  The third version of the message protocol is
        called SNMPv3 and described in RFC 1906 [10], RFC 2572 [11] and
        RFC 2574 [12].

   o    Protocol operations for accessing management information.  The
        first set of protocol operations and associated PDU formats is
        described in STD 15, RFC 1157 [8].  A second set of protocol
        operations and associated PDU formats is described in RFC 1905
        [13].

   o    A set of fundamental applications described in RFC 2573 [14] and
        the view-based access control mechanism described in RFC 2575
        [15].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the mechanisms defined in the SMI.






McCloghrie, et al.          Standards Track                     [Page 2]

RFC 2932               IPv4 Multicast Routing MIB           October 2000


   This memo specifies a MIB module that is compliant to the SMIv2.  A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations.  The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (use of Counter64).  Some machine readable
   information in SMIv2 will be converted into textual descriptions in
   SMIv1 during the translation process.  However, this loss of machine
   readable information is not considered to change the semantics of the
   MIB.

3.  Overview

   This MIB module contains one scalar and five tables.  The tables are:

   (1)  the IP Multicast Route Table containing multicast routing
        information for IP datagrams sent by particular sources to the
        IP multicast groups known to a router.

   (2)  the IP Multicast Routing Next Hop Table containing information
        on the next-hops for the routing IP multicast datagrams.  Each
        entry is one of a list of next-hops on outgoing interfaces for
        particular sources sending to a particular multicast group
        address.

   (3)  the IP Multicast Routing Interface Table containing multicast
        routing information specific to interfaces.

   (4)  the IP Multicast Scope Boundary Table containing the boundaries
        configured for multicast scopes [22].

   (5)  the IP Multicast Scope Name Table containing human-readable
        names of multicast scope.



















McCloghrie, et al.          Standards Track                     [Page 3]

RFC 2932               IPv4 Multicast Routing MIB           October 2000


4.  Definitions

IPMROUTE-STD-MIB DEFINITIONS ::= BEGIN

IMPORTS
    MODULE-IDENTITY, OBJECT-TYPE, mib-2,
    Integer32, Counter32, Counter64, Gauge32,
    IpAddress, TimeTicks             FROM SNMPv2-SMI
    RowStatus, TEXTUAL-CONVENTION,
    TruthValue                       FROM SNMPv2-TC
    MODULE-COMPLIANCE, OBJECT-GROUP  FROM SNMPv2-CONF
    SnmpAdminString                  FROM SNMP-FRAMEWORK-MIB
    InterfaceIndexOrZero,
    InterfaceIndex                   FROM IF-MIB
    IANAipRouteProtocol,
    IANAipMRouteProtocol             FROM IANA-RTPROTO-MIB;

ipMRouteStdMIB MODULE-IDENTITY
    LAST-UPDATED "200009220000Z" -- September 22, 2000
    ORGANIZATION "IETF IDMR Working Group"
    CONTACT-INFO
            " Dave Thaler
              Microsoft Corporation
              One Microsoft Way
              Redmond, WA  98052-6399
              US

              Phone: [phone]
              EMail: [e-mail]"
    DESCRIPTION
            "The MIB module for management of IP Multicast routing, but
            independent of the specific multicast routing protocol in
            use."
    REVISION     "200009220000Z" -- September 22, 2000
    DESCRIPTION
            "Initial version, published as RFC 2932."
    ::= { mib-2 83 }

-- Textual Conventions

LanguageTag ::= TEXTUAL-CONVENTION

   DISPLAY-HINT "100a"
   STATUS       current
   DESCRIPTION
            "An RFC 1766-style language tag, with all alphabetic
            characters converted to lowercase.  This restriction is
            intended to make the lexical ordering imposed by SNMP useful



McCloghrie, et al.          Standards Track                     [Page 4]

RFC 2932               IPv4 Multicast Routing MIB           October 2000


            when applied to language tags.  Note that it is
            theoretically possible for a valid language tag to exceed
            the allowed length of this syntax, and thus be impossible to
            represent with this syntax.  Sampling of language tags in
            current use on the Internet suggests that this limit does
            not pose a serious problem in practice."
   SYNTAX       OCTET STRING (SIZE (1..100))


-- Top-level structure of the MIB

ipMRouteMIBObjects OBJECT IDENTIFIER ::= { ipMRouteStdMIB 1 }

ipMRoute      OBJECT IDENTIFIER ::= { ipMRouteMIBObjects 1 }

-- the IP Multicast Routing MIB-Group
--
-- a collection of objects providing information about
-- IP Multicast Groups


ipMRouteEnable OBJECT-TYPE
    SYNTAX     INTEGER { enabled(1), disabled(2) }
    MAX-ACCESS read-write
    STATUS     current
    DESCRIPTION
            "The enabled status of IP Multicast routing on this router."
    ::= { ipMRoute 1 }

ipMRouteEntryCount OBJECT-TYPE
    SYNTAX     Gauge32
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The number of rows in the ipMRouteTable.  This can be used
            to monitor the multicast routing table size."
    ::= { ipMRoute 7 }

ipMRouteTable OBJECT-TYPE
    SYNTAX     SEQUENCE OF IpMRouteEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The (conceptual) table containing multicast routing
            information for IP datagrams sent by particular sources to
            the IP multicast groups known to this router."
    ::= { ipMRoute 2 }




McCloghrie, et al.          Standards Track                     [Page 5]

RFC 2932               IPv4 Multicast Routing MIB           October 2000


ipMRouteEntry OBJECT-TYPE
    SYNTAX     IpMRouteEntry
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "An entry (conceptual row) containing the multicast routing
            information for IP datagrams from a particular source and
            addressed to a particular IP multicast group address.
            Discontinuities in counters in this entry can be detected by
            observing the value of ipMRouteUpTime."
    INDEX      { ipMRouteGroup,
                 ipMRouteSource,
                 ipMRouteSourceMask }
    ::= { ipMRouteTable 1 }

IpMRouteEntry ::= SEQUENCE {
    ipMRouteGroup                 IpAddress,
    ipMRouteSource                IpAddress,
    ipMRouteSourceMask            IpAddress,
    ipMRouteUpstreamNeighbor      IpAddress,
    ipMRouteInIfIndex             InterfaceIndexOrZero,
    ipMRouteUpTime                TimeTicks,
    ipMRouteExpiryTime            TimeTicks,
    ipMRoutePkts                  Counter32,
    ipMRouteDifferentInIfPackets  Counter32,
    ipMRouteOctets                Counter32,
    ipMRouteProtocol              IANAipMRouteProtocol,
    ipMRouteRtProto               IANAipRouteProtocol,
    ipMRouteRtAddress             IpAddress,
    ipMRouteRtMask                IpAddress,
    ipMRouteRtType                INTEGER,
    ipMRouteHCOctets              Counter64
}

ipMRouteGroup OBJECT-TYPE
    SYNTAX     IpAddress
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The IP multicast group address for which this entry
            contains multicast routing information."
    ::= { ipMRouteEntry 1 }

ipMRouteSource OBJECT-TYPE
    SYNTAX     IpAddress
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION



McCloghrie, et al.          Standards Track                     [Page 6]

RFC 2932               IPv4 Multicast Routing MIB           October 2000


            "The network address which when combined with the
            corresponding value of ipMRouteSourceMask identifies the
            sources for which this entry contains multicast routing
            information."
    ::= { ipMRouteEntry 2 }

ipMRouteSourceMask OBJECT-TYPE
    SYNTAX     IpAddress
    MAX-ACCESS not-accessible
    STATUS     current
    DESCRIPTION
            "The network mask which when combined with the corresponding
            value of ipMRouteSource identifies the sources for which
            this entry contains multicast routing information."
    ::= { ipMRouteEntry 3 }

ipMRouteUpstreamNeighbor OBJECT-TYPE
    SYNTAX     IpAddress
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The address of the upstream neighbor (e.g., RPF neighbor)
            from which IP datagrams from these sources to this multicast
            address are received, or 0.0.0.0 if the upstream neighbor is
            unknown (e.g., in CBT)."
    ::= { ipMRouteEntry 4 }

ipMRouteInIfIndex OBJECT-TYPE
    SYNTAX     InterfaceIndexOrZero
    MAX-ACCESS read-only
    STATUS     current
    DESCRIPTION
            "The value of ifIndex for the interface on which IP
            datagrams sent by these sources to this multicast address
            are received.  A value of 0 indicates that datagrams are not
            subject to an incoming interface check, but may be accepted
            on multiple interfaces (e.g., in CBT)."