IDMR Working Group Keith McCloghrie INTERNET-DRAFT Dino Farinacci Expires August 1995 Cisco Systems 4 February 1995 Internet Group Management Protocol MIB 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 February 1995 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. Expires August 1995 [Page 2] Draft IGMP MIB February 1995 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 "9502042359Z" 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 } Expires August 1995 [Page 3] Draft IGMP MIB February 1995 -- -- 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." Expires August 1995 [Page 4] Draft IGMP MIB February 1995 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 } Expires August 1995 [Page 5] Draft IGMP MIB February 1995 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 Expires August 1995 [Page 6] Draft IGMP MIB February 1995 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 } Expires August 1995 [Page 7] Draft IGMP MIB February 1995 -- 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 } Expires August 1995 [Page 8] Draft IGMP MIB February 1995 igmpRouterMIBGroup OBJECT-GROUP OBJECTS { igmpCacheUpTime, igmpCacheExpiryTime, igmpInterfaceQueryInterval } STATUS current DESCRIPTION "A collection of additional objects for management of IGMP in routers." ::= { igmpMIBGroups 2 } END Expires August 1995 [Page 9] Draft IGMP MIB February 1995 5. 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 (PIM): Protocol Specification", January 1995. 6. Security Considerations Security issues are not discussed in this memo. 7. Author's Address Keith McCloghrie cisco Systems, Inc. 1525 O'Brien Dr. Expires August 1995 [Page 10] Draft IGMP MIB February 1995 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 Expires August 1995 [Page 11] Draft IGMP MIB February 1995 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 References ...................................................... 10 6 Security Considerations ......................................... 10 7 Author's Address ................................................ 10 Expires August 1995 [Page 12]