rfc2932.txt
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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: +1 425 703 8835
EMail: dthaler@microsoft.com"
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)."
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