Network Working Group K. McCloghrie

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

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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.

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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.

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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: [email protected]"
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

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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 }

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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

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"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)."
::= { ipMRouteEntry 5 }

ipMRouteUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time since the multicast routing information
represented by this entry was learned by the router."
::= { ipMRouteEntry 6 }

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ipMRouteExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum amount of time remaining before this entry will
be aged out. The value 0 indicates that the entry is not
subject to aging."
::= { ipMRouteEntry 7 }

ipMRoutePkts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets which this router has received from
these sources and addressed to this multicast group
address."
::= { ipMRouteEntry 8 }

ipMRouteDifferentInIfPackets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets which this router has received from
these sources and addressed to this multicast group address,
which were dropped because they were not received on the
interface indicated by ipMRouteInIfIndex. Packets which are
not subject to an incoming interface check (e.g., using CBT)
are not counted."
::= { ipMRouteEntry 9 }

ipMRouteOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets contained in IP datagrams which were
received from these sources and addressed to this multicast
group address, and which were forwarded by this router."
::= { ipMRouteEntry 10 }

ipMRouteProtocol OBJECT-TYPE
SYNTAX IANAipMRouteProtocol
MAX-ACCESS read-only
STATUS current
DESCRIPTION

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"The multicast routing protocol via which this multicast
forwarding entry was learned."
::= { ipMRouteEntry 11 }

ipMRouteRtProto OBJECT-TYPE
SYNTAX IANAipRouteProtocol
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The routing mechanism via which the route used to find the
upstream or parent interface for this multicast forwarding
entry was learned. Inclusion of values for routing
protocols is not intended to imply that those protocols need
be supported."
::= { ipMRouteEntry 12 }

ipMRouteRtAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address portion of the route used to find the upstream
or parent interface for this multicast forwarding entry."
::= { ipMRouteEntry 13 }

ipMRouteRtMask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The mask associated with the route used to find the upstream
or parent interface for this multicast forwarding entry."
::= { ipMRouteEntry 14 }

ipMRouteRtType OBJECT-TYPE
SYNTAX INTEGER {
unicast (1), -- Unicast route used in multicast RIB
multicast (2) -- Multicast route
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The reason the given route was placed in the (logical)
multicast Routing Information Base (RIB). A value of
unicast means that the route would normally be placed only
in the unicast RIB, but was placed in the multicast RIB
(instead or in addition) due to local configuration, such as
when running PIM over RIP. A value of multicast means that

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RFC 2932 IPv4 Multicast Routing MIB October 2000

the route was explicitly added to the multicast RIB by the
routing protocol, such as DVMRP or Multiprotocol BGP."
::= { ipMRouteEntry 15 }

ipMRouteHCOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets contained in IP datagrams which were
received from these sources and addressed to this multicast
group address, and which were forwarded by this router.
This object is a 64-bit version of ipMRouteOctets."
::= { ipMRouteEntry 16 }

--
-- The IP Multicast Routing Next Hop Table
--

ipMRouteNextHopTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMRouteNextHopEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table containing information on the next-
hops on outgoing interfaces for 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."
::= { ipMRoute 3 }

ipMRouteNextHopEntry OBJECT-TYPE
SYNTAX IpMRouteNextHopEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the list of next-hops on
outgoing interfaces to which IP multicast datagrams from
particular sources to a IP multicast group address are
routed. Discontinuities in counters in this entry can be
detected by observing the value of ipMRouteUpTime."
INDEX { ipMRouteNextHopGroup, ipMRouteNextHopSource,
ipMRouteNextHopSourceMask, ipMRouteNextHopIfIndex,
ipMRouteNextHopAddress }
::= { ipMRouteNextHopTable 1 }

IpMRouteNextHopEntry ::= SEQUENCE {
ipMRouteNextHopGroup IpAddress,

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ipMRouteNextHopSource IpAddress,
ipMRouteNextHopSourceMask IpAddress,
ipMRouteNextHopIfIndex InterfaceIndex,
ipMRouteNextHopAddress IpAddress,
ipMRouteNextHopState INTEGER,
ipMRouteNextHopUpTime TimeTicks,
ipMRouteNextHopExpiryTime TimeTicks,
ipMRouteNextHopClosestMemberHops Integer32,
ipMRouteNextHopProtocol IANAipMRouteProtocol,
ipMRouteNextHopPkts Counter32
}

ipMRouteNextHopGroup OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP multicast group for which this entry specifies a
next-hop on an outgoing interface."
::= { ipMRouteNextHopEntry 1 }

ipMRouteNextHopSource OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The network address which when combined with the
corresponding value of ipMRouteNextHopSourceMask identifies
the sources for which this entry specifies a next-hop on an
outgoing interface."
::= { ipMRouteNextHopEntry 2 }

ipMRouteNextHopSourceMask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The network mask which when combined with the corresponding
value of ipMRouteNextHopSource identifies the sources for
which this entry specifies a next-hop on an outgoing
interface."
::= { ipMRouteNextHopEntry 3 }

ipMRouteNextHopIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION

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"The ifIndex value of the interface for the outgoing
interface for this next-hop."
::= { ipMRouteNextHopEntry 4 }

ipMRouteNextHopAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The address of the next-hop specific to this entry. For
most interfaces, this is identical to ipMRouteNextHopGroup.
NBMA interfaces, however, may have multiple next-hop
addresses out a single outgoing interface."
::= { ipMRouteNextHopEntry 5 }

ipMRouteNextHopState OBJECT-TYPE
SYNTAX INTEGER { pruned(1), forwarding(2) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An indication of whether the outgoing interface and next-
hop represented by this entry is currently being used to
forward IP datagrams. The value 'forwarding' indicates it
is currently being used; the value 'pruned' indicates it is
not."
::= { ipMRouteNextHopEntry 6 }

ipMRouteNextHopUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time since the multicast routing information
represented by this entry was learned by the router."
::= { ipMRouteNextHopEntry 7 }

ipMRouteNextHopExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum amount of time remaining before this entry will
be aged out. If ipMRouteNextHopState is pruned(1), the
remaining time until the prune expires and the state reverts
to forwarding(2). Otherwise, the remaining time until this
entry is removed from the table. The time remaining may be
copied from ipMRouteExpiryTime if the protocol in use for
this entry does not specify next-hop timers. The value 0

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RFC 2932 IPv4 Multicast Routing MIB October 2000

indicates that the entry is not subject to aging."
::= { ipMRouteNextHopEntry 8 }

ipMRouteNextHopClosestMemberHops OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum number of hops between this router and any
member of this IP multicast group reached via this next-hop
on this outgoing interface. Any IP multicast datagrams for
the group which have a TTL less than this number of hops
will not be forwarded to this next-hop."
::= { ipMRouteNextHopEntry 9 }

ipMRouteNextHopProtocol OBJECT-TYPE
SYNTAX IANAipMRouteProtocol
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The routing mechanism via which this next-hop was learned."
::= { ipMRouteNextHopEntry 10 }

ipMRouteNextHopPkts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of packets which have been forwarded using this
route."
::= { ipMRouteNextHopEntry 11 }

--
-- The Multicast Routing Interface Table
--

ipMRouteInterfaceTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMRouteInterfaceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table containing multicast routing
information specific to interfaces."
::= { ipMRoute 4 }

ipMRouteInterfaceEntry OBJECT-TYPE
SYNTAX IpMRouteInterfaceEntry
MAX-ACCESS not-accessible

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STATUS current
DESCRIPTION
"An entry (conceptual row) containing the multicast routing
information for a particular interface."
INDEX { ipMRouteInterfaceIfIndex }
::= { ipMRouteInterfaceTable 1 }

IpMRouteInterfaceEntry ::= SEQUENCE {
ipMRouteInterfaceIfIndex InterfaceIndex,
ipMRouteInterfaceTtl Integer32,
ipMRouteInterfaceProtocol IANAipMRouteProtocol,
ipMRouteInterfaceRateLimit Integer32,
ipMRouteInterfaceInMcastOctets Counter32,
ipMRouteInterfaceOutMcastOctets Counter32,
ipMRouteInterfaceHCInMcastOctets Counter64,
ipMRouteInterfaceHCOutMcastOctets Counter64
}

ipMRouteInterfaceIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The ifIndex value of the interface for which this entry
contains information."
::= { ipMRouteInterfaceEntry 1 }

ipMRouteInterfaceTtl OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The datagram TTL threshold for the interface. Any IP
multicast datagrams with a TTL less than this threshold will
not be forwarded out the interface. The default value of 0
means all multicast packets are forwarded out the
interface."
::= { ipMRouteInterfaceEntry 2 }

ipMRouteInterfaceProtocol OBJECT-TYPE
SYNTAX IANAipMRouteProtocol
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The routing protocol running on this interface."
::= { ipMRouteInterfaceEntry 3 }

ipMRouteInterfaceRateLimit OBJECT-TYPE

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SYNTAX Integer32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The rate-limit, in kilobits per second, of forwarded
multicast traffic on the interface. A rate-limit of 0
indicates that no rate limiting is done."
DEFVAL { 0 }
::= { ipMRouteInterfaceEntry 4 }

ipMRouteInterfaceInMcastOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have arrived
on the interface, including framing characters. This object
is similar to ifInOctets in the Interfaces MIB, except that
only multicast packets are counted."
::= { ipMRouteInterfaceEntry 5 }

ipMRouteInterfaceOutMcastOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have been
sent on the interface."
::= { ipMRouteInterfaceEntry 6 }

ipMRouteInterfaceHCInMcastOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have arrived
on the interface, including framing characters. This object
is a 64-bit version of ipMRouteInterfaceInMcastOctets. It
is similar to ifHCInOctets in the Interfaces MIB, except
that only multicast packets are counted."
::= { ipMRouteInterfaceEntry 7 }

ipMRouteInterfaceHCOutMcastOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of octets of multicast packets that have been

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sent on the interface. This object is a 64-bit version of
ipMRouteInterfaceOutMcastOctets."
::= { ipMRouteInterfaceEntry 8 }

--
-- The IP Multicast Scope Boundary Table
--

ipMRouteBoundaryTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMRouteBoundaryEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing the router's scoped
multicast address boundaries."
::= { ipMRoute 5 }

ipMRouteBoundaryEntry OBJECT-TYPE
SYNTAX IpMRouteBoundaryEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the ipMRouteBoundaryTable
representing a scoped boundary."
INDEX { ipMRouteBoundaryIfIndex, ipMRouteBoundaryAddress,
ipMRouteBoundaryAddressMask }
::= { ipMRouteBoundaryTable 1 }

IpMRouteBoundaryEntry ::= SEQUENCE {
ipMRouteBoundaryIfIndex InterfaceIndex,
ipMRouteBoundaryAddress IpAddress,
ipMRouteBoundaryAddressMask IpAddress,
ipMRouteBoundaryStatus RowStatus
}

ipMRouteBoundaryIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IfIndex value for the interface to which this boundary
applies. Packets with a destination address in the
associated address/mask range will not be forwarded out this
interface."
::= { ipMRouteBoundaryEntry 1 }

ipMRouteBoundaryAddress OBJECT-TYPE
SYNTAX IpAddress

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MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The group address which when combined with the
corresponding value of ipMRouteBoundaryAddressMask
identifies the group range for which the scoped boundary
exists. Scoped addresses must come from the range 239.x.x.x
as specified in RFC 2365."
::= { ipMRouteBoundaryEntry 2 }

ipMRouteBoundaryAddressMask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The group address mask which when combined with the
corresponding value of ipMRouteBoundaryAddress identifies
the group range for which the scoped boundary exists."
::= { ipMRouteBoundaryEntry 3 }

ipMRouteBoundaryStatus 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."
::= { ipMRouteBoundaryEntry 4 }

--
-- The IP Multicast Scope Name Table
--

ipMRouteScopeNameTable OBJECT-TYPE
SYNTAX SEQUENCE OF IpMRouteScopeNameEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing the multicast scope names."
::= { ipMRoute 6 }

ipMRouteScopeNameEntry OBJECT-TYPE
SYNTAX IpMRouteScopeNameEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the ipMRouteScopeNameTable
representing a multicast scope name."

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INDEX { ipMRouteScopeNameAddress,
ipMRouteScopeNameAddressMask,
IMPLIED ipMRouteScopeNameLanguage }
::= { ipMRouteScopeNameTable 1 }

IpMRouteScopeNameEntry ::= SEQUENCE {
ipMRouteScopeNameAddress IpAddress,
ipMRouteScopeNameAddressMask IpAddress,
ipMRouteScopeNameLanguage LanguageTag,
ipMRouteScopeNameString SnmpAdminString,
ipMRouteScopeNameDefault TruthValue,
ipMRouteScopeNameStatus RowStatus
}

ipMRouteScopeNameAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The group address which when combined with the
corresponding value of ipMRouteScopeNameAddressMask
identifies the group range associated with the multicast
scope. Scoped addresses must come from the range
239.x.x.x."
::= { ipMRouteScopeNameEntry 1 }

ipMRouteScopeNameAddressMask OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The group address mask which when combined with the
corresponding value of ipMRouteScopeNameAddress identifies
the group range associated with the multicast scope."
::= { ipMRouteScopeNameEntry 2 }

ipMRouteScopeNameLanguage OBJECT-TYPE
SYNTAX LanguageTag
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The RFC 1766-style language tag associated with the scope
name."
::= { ipMRouteScopeNameEntry 3 }

ipMRouteScopeNameString OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-create

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RFC 2932 IPv4 Multicast Routing MIB October 2000

STATUS current
DESCRIPTION
"The textual name associated with the multicast scope. The
value of this object should be suitable for displaying to
end-users, such as when allocating a multicast address in
this scope. When no name is specified, the default value of
this object should be the string 239.x.x.x/y with x and y
replaced appropriately to describe the address and mask
length associated with the scope."
::= { ipMRouteScopeNameEntry 4 }

ipMRouteScopeNameDefault OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If true, indicates a preference that the name in the
following language should be used by applications if no name
is available in a desired language."
DEFVAL { false }
::= { ipMRouteScopeNameEntry 5 }

ipMRouteScopeNameStatus 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."
::= { ipMRouteScopeNameEntry 6 }

-- conformance information

ipMRouteMIBConformance
OBJECT IDENTIFIER ::= { ipMRouteStdMIB 2 }
ipMRouteMIBCompliances
OBJECT IDENTIFIER ::= { ipMRouteMIBConformance 1 }
ipMRouteMIBGroups OBJECT IDENTIFIER ::= { ipMRouteMIBConformance 2 }

-- compliance statements

ipMRouteMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for the IP Multicast MIB."
MODULE -- this module
MANDATORY-GROUPS { ipMRouteMIBBasicGroup,

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RFC 2932 IPv4 Multicast Routing MIB October 2000

ipMRouteMIBRouteGroup}

GROUP ipMRouteMIBBoundaryGroup
DESCRIPTION
"This group is mandatory if the router supports
administratively-scoped multicast address boundaries."

OBJECT ipMRouteBoundaryStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT ipMRouteScopeNameStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

GROUP ipMRouteMIBHCInterfaceGroup
DESCRIPTION
"This group is mandatory only for those network interfaces
for which the value of the corresponding instance of ifSpeed
is greater than 20,000,000 bits/second."

::= { ipMRouteMIBCompliances 1 }

-- units of conformance

ipMRouteMIBBasicGroup OBJECT-GROUP
OBJECTS { ipMRouteEnable, ipMRouteEntryCount,
ipMRouteUpstreamNeighbor, ipMRouteInIfIndex,
ipMRouteUpTime, ipMRouteExpiryTime,
ipMRouteNextHopState,
ipMRouteNextHopUpTime,
ipMRouteNextHopExpiryTime,
ipMRouteNextHopProtocol,
ipMRouteNextHopPkts,
ipMRouteInterfaceTtl,
ipMRouteInterfaceProtocol, ipMRouteInterfaceRateLimit,
ipMRouteInterfaceInMcastOctets,
ipMRouteInterfaceOutMcastOctets,
ipMRouteProtocol
}
STATUS current
DESCRIPTION
"A collection of objects to support basic management of IP
Multicast routing."
::= { ipMRouteMIBGroups 1 }

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ipMRouteMIBHopCountGroup OBJECT-GROUP
OBJECTS { ipMRouteNextHopClosestMemberHops }
STATUS current
DESCRIPTION
"A collection of objects to support management of the use of
hop counts in IP Multicast routing."
::= { ipMRouteMIBGroups 2 }

ipMRouteMIBBoundaryGroup OBJECT-GROUP
OBJECTS { ipMRouteBoundaryStatus, ipMRouteScopeNameString,
ipMRouteScopeNameDefault, ipMRouteScopeNameStatus }
STATUS current
DESCRIPTION
"A collection of objects to support management of scoped
multicast address boundaries."
::= { ipMRouteMIBGroups 3 }

ipMRouteMIBPktsOutGroup OBJECT-GROUP
OBJECTS { ipMRouteNextHopPkts }
STATUS current
DESCRIPTION
"A collection of objects to support management of packet
counters for each outgoing interface entry of a route."
::= { ipMRouteMIBGroups 4 }

ipMRouteMIBHCInterfaceGroup OBJECT-GROUP
OBJECTS { ipMRouteInterfaceHCInMcastOctets,
ipMRouteInterfaceHCOutMcastOctets,
ipMRouteHCOctets }
STATUS current
DESCRIPTION
"A collection of objects providing information specific to
high speed (greater than 20,000,000 bits/second) network
interfaces."
::= { ipMRouteMIBGroups 5 }

ipMRouteMIBRouteGroup OBJECT-GROUP
OBJECTS { ipMRouteRtProto, ipMRouteRtAddress,
ipMRouteRtMask, ipMRouteRtType }
STATUS current
DESCRIPTION
"A collection of objects providing information on the
relationship between multicast routing information, and the
IP Forwarding Table."
::= { ipMRouteMIBGroups 6 }

ipMRouteMIBPktsGroup OBJECT-GROUP
OBJECTS { ipMRoutePkts, ipMRouteDifferentInIfPackets,

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ipMRouteOctets }
STATUS current
DESCRIPTION
"A collection of objects to support management of packet
counters for each forwarding entry."
::= { ipMRouteMIBGroups 7 }

END

5. IANA Considerations

The ipMRouteRtProto, ipMRouteNextHopProtocol,
ipMRouteInterfaceProtocol, and ipMRouteProtocol use textual
conventions imported from the IANA-RTPROTO-MIB. The purpose of
defining these textual conventions in a separate MIB module is to
allow additional values to be defined without having to issue a new
version of this document. The Internet Assigned Numbers Authority
(IANA) is responsible for the assignment of all Internet numbers,
including various SNMP-related numbers; it will administer the values
associated with these textual conventions.

The rules for additions or changes to the IANA-RTPROTO-MIB are
outlined in the DESCRIPTION clause associated with its MODULE-
IDENTITY statement.

The current versions of the IANA-RTPROTO-MIB can be accessed from the
IANA home page at: "http://www.iana.org/".

6. Security Considerations

This MIB contains readable objects whose values provide information
related to multicast routing, including information on what machines
are sending to which groups. There are also a number of objects that
have a MAX-ACCESS clause of read-write and/or read-create, such as
those which allow an administrator to configure multicast boundaries.

While unauthorized access to the readable objects is relatively
innocuous, unauthorized access to the write-able objects could cause
a denial of service, or could cause wider distribution of packets
intended only for local distribution. Hence, the support for SET
operations in a non-secure environment without proper protection can
have a negative effect on network operations.

SNMPv1 by itself is such an insecure environment. 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 SET (change/create/delete) the objects in this MIB.

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RFC 2932 IPv4 Multicast Routing MIB October 2000

It is recommended that the implementers consider the security
features as provided by the SNMPv3 framework. Specifically, the use
of the User-based Security Model RFC 2574 [12] and the View-based
Access Control Model RFC 2575 [15] is recommended.

It is then a customer/user responsibility to ensure that the SNMP
entity giving access to this MIB, is properly configured to give
access to those objects only to those principals (users) that have
legitimate rights to access them.

7. Intellectual Property Notice

The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and
standards-related documentation can be found in BCP-11. Copies of
claims of rights made available for publication and any assurances of
licenses to be made available, or the result of an attempt made to
obtain a general license or permission for the use of such
proprietary rights by implementers or users of this specification can
be obtained from the IETF Secretariat.

The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights which may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director.

8. Acknowledgements

This MIB module was updated based on feedback from the IETF's Inter-
Domain Multicast Routing (IDMR) Working Group.

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RFC 2932 IPv4 Multicast Routing MIB October 2000

9. Authors' Addresses

Keith McCloghrie
cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706

Phone: +1 408 526 5260
EMail: [email protected]

Dino Farinacci
Procket Networks
3850 North First Street
San Jose, CA 95134

Phone: +1 408-954-7909
Email: [email protected]

Dave Thaler
Microsoft Corporation
One Microsoft Way
Redmond, WA 98052-6399

Phone: +1 425 703 8835
EMail: [email protected]

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RFC 2932 IPv4 Multicast Routing MIB October 2000

10. References

[1] Wijnen, B., Harrington, D. and R. Presuhn, "An Architecture for
Describing SNMP Management Frameworks", RFC 2571, April 1999.

[2] Rose, M. and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based Internets", STD 16, RFC
1155, May 1990.

[3] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
RFC 1212, March 1991.

[4] Rose, M., "A Convention for Defining Traps for use with the
SNMP", RFC 1215, March 1991.

[5] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Structure of Management Information
Version 2 (SMIv2)", STD 58, RFC 2578, STD 58, April 1999.

[6] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Textual Conventions for SMIv2", STD 58,
RFC 2579, April 1999.

[7] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
M. and S. Waldbusser, "Conformance Statements for SMIv2", STD
58, RFC 2580, April 1999.

[8] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
Network Management Protocol", STD 15, RFC 1157, May 1990.

[9] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
"Introduction to Community-based SNMPv2", RFC 1901, January
1996.

[10] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Transport
Mappings for Version 2 of the Simple Network Management Protocol
(SNMPv2)", RFC 1906, January 1996.

[11] Case, J., Harrington D., Presuhn R. and B. Wijnen, "Message
Processing and Dispatching for the Simple Network Management
Protocol (SNMP)", RFC 2572, April 1999.

[12] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM)
for version 3 of the Simple Network Management Protocol
(SNMPv3)", RFC 2574, April 1999.

McCloghrie, et al. Standards Track [Page 25]

RFC 2932 IPv4 Multicast Routing MIB October 2000

[13] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol
Operations for Version 2 of the Simple Network Management
Protocol (SNMPv2)", RFC 1905, January 1996.

[14] Levi, D., Meyer, P. and B. Stewart, "SNMPv3 Applications", RFC
2573, April 1999.

[15] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access
Control Model (VACM) for the Simple Network Management Protocol
(SNMP)", RFC 2575, April 1999.

[16] Deering, S., "Multicast Routing in a Datagram Internetwork", PhD
thesis, Electrical Engineering Dept., Stanford University,
December 1991.

[17] Waitzman, D., Partridge, C. and S. Deering, "Distance Vector
Multicast Routing Protocol", RFC 1075, November 1988.

[18] Estrin, D., Farinacci, D., Helmy, A., Thaler, D., Deering, S.,
Handley, M., Jacobson, V., Liu, C., Sharma, P. and L. Wei,
"Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol
Specification", RFC 2362, June 1998.

[19] Deering, S., Estrin, D., Farinacci, D., Jacobson, V., Helmy, A.
and L. Wei, "Protocol Independent Multicast Version 2, Dense
Mode Specification", Work in Progress.

[20] Moy, J., "Multicast Extensions to OSPF", RFC 1584, March 1994.

[21] Ballardie, A., "Core Based Trees (CBT version 2) Multicast
Routing", RFC 2189, September 1997.

[22] Meyer, D., "Administratively Scoped IP Multicast", BCP 23, RFC
2365, July 1998.

McCloghrie, et al. Standards Track [Page 26]

RFC 2932 IPv4 Multicast Routing MIB October 2000

11. Full Copyright Statement

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

This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.

The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.

This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgement

Funding for the RFC Editor function is currently provided by the
Internet Society.

McCloghrie, et al. Standards Track [Page 27]