IDMR Working Group Keith McCloghrie
INTERNET-DRAFT Dino Farinacci
Expires January 1995 Cisco Systems
15 July 1994
Internet Group Management Protocol MIB
<draft-ietf-idmr-igmp-mib-00.txt>
Status of this Memo
This document is an Internet Draft. Internet Drafts are working
documents of the Internet Engineering Task Force (IETF), its Areas, and
its Working Groups. Note that other groups may also distribute working
documents as Internet Drafts.
Internet Drafts are valid for a maximum of six months and may be
updated, replaced, or obsoleted by other documents at any time. It is
inappropriate to use Internet Drafts as reference material or to cite
them other than as a "work in progress".
1. Introduction
This memo defines an experimental 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 the Internet Group Management Protocol (IGMP). All of this MIB
module is applicable to IP multicast routers [6,7]; a subset is
applicable to hosts implementing IGMP [5].
Draft IGMP MIB July 1994
2. The SNMPv2 Network Management Framework
The SNMPv2 Network Management Framework consists of four major
components. They are:
o RFC 1442 [1] which defines the SMI, the mechanisms used for
describing and naming objects for the purpose of management.
o STD 17, RFC 1213 [2] defines MIB-II, the core set of managed
objects for the Internet suite of protocols.
o RFC 1445 [3] which defines the administrative and other
architectural aspects of the framework.
o RFC 1448 [4] which defines the protocol used for network access to
managed objects.
The Framework permits new objects to be defined for the purpose of
experimentation and evaluation.
2.1. Object Definitions
Managed objects are accessed via a virtual information store, termed the
Management Information Base or MIB. Objects in the MIB are defined
using the subset of Abstract Syntax Notation One (ASN.1) defined in the
SMI. In particular, each object type is named by an OBJECT IDENTIFIER,
an administratively assigned name. The object type together with an
object instance serves to uniquely identify a specific instantiation of
the object. For human convenience, we often use a textual string,
termed the descriptor, to refer to the object type.
3. Overview
This MIB module contains two tables:
(1) the IGMP Interface Table which contains one row for each interface
on which IGMP is enabled, and
(2) the IGMP Cache Table which contains one row for each IP multicast
group for which there are members on a particular interface.
Both tables are intended to be implemented by hosts and routers, but
some columnar objects in each table apply only to routers.
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4. Definitions
IGMP-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, experimental,
Integer32, IpAddress, TimeTicks FROM SNMPv2-SMI
RowStatus, TruthValue FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF;
igmpMIB MODULE-IDENTITY
LAST-UPDATED "9407152359Z"
ORGANIZATION "IETF IDMR Working Group."
CONTACT-INFO
" Keith McCloghrie
cisco Systems, Inc.
1525 O'Brien Dr.
Menlo Park, CA 94025
EMail: kzm@cisco.com"
DESCRIPTION
"The MIB module for IGMP Management."
::= { experimental xx } -- to be assigned by IANA
igmpMIBObjects OBJECT IDENTIFIER ::= { igmpMIB 1 }
igmp OBJECT IDENTIFIER ::= { igmpMIBObjects 1 }
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--
-- The IGMP Interface Table
--
igmpInterfaceTable OBJECT-TYPE
SYNTAX SEQUENCE OF IgmpInterfaceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing the interfaces on which IGMP
is enabled."
::= { igmp 1 }
igmpInterfaceEntry OBJECT-TYPE
SYNTAX IgmpInterfaceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) representing an interface on
which IGMP is enabled."
INDEX { igmpInterfaceIfIndex }
::= { igmpInterfaceTable 1 }
IgmpInterfaceEntry ::= SEQUENCE {
igmpInterfaceIfIndex Integer32,
igmpInterfaceQueryInterval Integer32,
igmpInterfaceStatus RowStatus
}
igmpInterfaceIfIndex OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The interface for which IGMP is enabled."
::= { igmpInterfaceEntry 1 }
igmpInterfaceQueryInterval OBJECT-TYPE
SYNTAX Integer32
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The frequency at which IGMP Host-Query packets are
transmitted on this interface."
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DEFVAL { 60 }
::= { igmpInterfaceEntry 2 }
igmpInterfaceStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The activation of a row enables IGMP on the interface. The
destruction of a row disables IGMP on the interface."
::= { igmpInterfaceEntry 3 }
--
-- The IGMP Cache Table
--
igmpCacheTable OBJECT-TYPE
SYNTAX SEQUENCE OF IgmpCacheEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing the IP multicast groups for
which there are members on a particular interface."
::= { igmp 2 }
igmpCacheEntry OBJECT-TYPE
SYNTAX IgmpCacheEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the igmpCacheTable."
INDEX { igmpCacheAddress, igmpCacheIfIndex }
::= { igmpCacheTable 1 }
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IgmpCacheEntry ::= SEQUENCE {
igmpCacheAddress IpAddress,
igmpCacheIfIndex Integer32,
igmpCacheSelf TruthValue,
igmpCacheLastReporter IpAddress,
igmpCacheUpTime TimeTicks,
igmpCacheExpiryTime TimeTicks,
igmpCacheStatus RowStatus
}
igmpCacheAddress OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP multicast group address for which this entry
contains information."
::= { igmpCacheEntry 1 }
igmpCacheIfIndex OBJECT-TYPE
SYNTAX Integer32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The interface for which this entry contains information for
an IP multicast group address."
::= { igmpCacheEntry 2 }
igmpCacheSelf OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"An indication of whether the local system is a member of
this group address on this interface."
DEFVAL { true }
::= { igmpCacheEntry 3 }
igmpCacheLastReporter OBJECT-TYPE
SYNTAX IpAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The IP address of the source of the last membership report
received for this IP Multicast group address on this
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interface. If no membership report has been received, this
object has the value 0.0.0.0."
::= { igmpCacheEntry 4 }
igmpCacheUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time since the system joined this group address, or
zero if the system is not currently a member."
::= { igmpCacheEntry 5 }
igmpCacheExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum amount of time remaining before this entry will
be aged out."
::= { igmpCacheEntry 6 }
igmpCacheStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this entry."
::= { igmpCacheEntry 7 }
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-- conformance information
igmpMIBConformance
OBJECT IDENTIFIER ::= { igmpMIB 2 }
igmpMIBCompliances
OBJECT IDENTIFIER ::= { igmpMIBConformance 1 }
igmpMIBGroups OBJECT IDENTIFIER ::= { igmpMIBConformance 2 }
-- compliance statements
igmpHostMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for hosts implementing the IGMP
MIB."
MODULE -- this module
MANDATORY-GROUPS { igmpBaseMIBGroup }
::= { igmpMIBCompliances 1 }
igmpRouterMIBCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for routers implementing the IGMP
MIB."
MODULE -- this module
MANDATORY-GROUPS { igmpBaseMIBGroup,
igmpRouterMIBGroup
}
::= { igmpMIBCompliances 2 }
-- units of conformance
igmpBaseMIBGroup OBJECT-GROUP
OBJECTS { igmpCacheSelf, igmpCacheLastReporter,
igmpCacheStatus, igmpInterfaceStatus
}
STATUS current
DESCRIPTION
"The basic collection of objects providing management of
IGMP."
::= { igmpMIBGroups 1 }
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igmpRouterMIBGroup OBJECT-GROUP
OBJECTS { igmpCacheUpTime, igmpCacheExpiryTime,
igmpInterfaceQueryInterval
}
STATUS current
DESCRIPTION
"A collection of additional objects for management of IGMP
in routers."
::= { igmpMIBGroups 2 }
END
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5. Acknowledgements
This MIB module will be presented to the IETF's Inter-Domain Multicast
Routing (IDMR) Working Group.
6. References
[1] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Structure
of Management Information for version 2 of the Simple Network
Management Protocol (SNMPv2)", RFC 1442, SNMP Research,Inc., Hughes
LAN Systems, Dover Beach Consulting, Inc., Carnegie Mellon
University, April 1993.
[2] McCloghrie, K., and M. Rose, Editors, "Management Information Base
for Network Management of TCP/IP-based internets: MIB-II", STD 17,
RFC 1213, Hughes LAN Systems, Performance Systems International,
March 1991.
[3] Galvin, J., and K. McCloghrie, "Administrative Model for version 2
of the Simple Network Management Protocol (SNMPv2)", RFC 1445,
Trusted Information Systems, Hughes LAN Systems, April 1993.
[4] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser, "Protocol
Operations for version 2 of the Simple Network Management Protocol
(SNMPv2)", RFC 1448, SNMP Research,Inc., Hughes LAN Systems, Dover
Beach Consulting, Inc., Carnegie Mellon University, April 1993.
[5] Deering, S., "Host Extensions for IP Multicasting", RFC 1112,
August 1989.
[6] Waitzman, D., Partridge, C., and S.E. Deering, "Distance Vector
Multicast Routing Protocol", RFC 1075, November 1988.
[7] Deering, S., Estrin, D., Farinacci, D., Jacobson, V., Liu, G., and
L. Wei, "Protocol Independent Multicast, Sparse Mode Protocol
Specification", March 1994.
7. Security Considerations
Security issues are not discussed in this memo.
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8. Author's Address
Keith McCloghrie
cisco Systems, Inc.
1525 O'Brien Dr.
Menlo Park, CA 94025
Phone: (415) 324-5260
EMail: kzm@cisco.com
Dino Farinacci
cisco Systems, Inc.
1525 O'Brien Dr.
Menlo Park, CA 94025
Phone: (415) 688-4696
EMail: dino@cisco.com
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Table of Contents
1 Introduction .................................................... 1
2 The SNMPv2 Network Management Framework ......................... 2
2.1 Object Definitions ............................................ 2
3 Overview ........................................................ 2
4 Definitions ..................................................... 3
5 Acknowledgements ................................................ 10
6 References ...................................................... 10
7 Security Considerations ......................................... 10
8 Author's Address ................................................ 11
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