FOUNDRY-SN-IGMP-MIB

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Organization: Brocade Communications Systems, Inc.

Last Updated: 2010-06-02

Category: Technology: Multicast, Vendor: Foundry/Brocade

Description: Brocade Foundry IGMP MIB providing Internet Group Management Protocol configuration, group membership, and multicast routing objects.

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What Is FOUNDRY-SN-IGMP-MIB?

FOUNDRY-SN-IGMP-MIB is a Brocade (formerly Foundry Networks) vendor MIB for managing IGMP on Foundry/Brocade switches and routers, covering multicast group membership and IGMP snooping/routing configuration. It exposes per-interface IGMP configuration such as query interval and group membership timeout, dynamic and static multicast group membership tables, and per-interface group address/age tracking. It supports monitoring of multicast software/protocol state -- specifically which multicast groups are active on which interface and the age of each membership entry -- helping operators verify multicast forwarding is correctly tracking receiver interest and detect stale or missing group memberships. It is part of Foundry/Brocade's "SN" enterprise MIB family and depends on the broader IGMP protocol standard (RFC 2236/3376) it manages, alongside other Foundry SN MIBs for interface indexing. It is deployed on Foundry/Brocade switches and routers in networks running IP multicast applications, such as video streaming or financial market data feeds, where IGMP group membership must be tracked per interface. Engineers can download the FOUNDRY-SN-IGMP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in FOUNDRY-SN-IGMP-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Brocade/Foundry Networks switches and routers

Monitoring Examples

An operator would poll snIgmpIfTable (snIgmpQueryInterval, snIgmpGroupMembershipTime) to confirm IGMP timers are set as expected on an interface, then check group entries (snIgmpIfGroupAddress, snIgmpIfGroupAge) to see which multicast groups are actively joined and how recently. A group's age continuously resetting well below the membership timeout confirms active receivers, whereas a group aging out with no renewed query response would flag a lost multicast receiver.

What Can Be Monitored

IGMP query interval and group membership timeout per interface
active multicast group addresses per interface
group membership age
static multicast group configuration

Imported Objects

From FOUNDRY-SN-ROOT-MIB

router

OBJECT-IDENTITY

From SNMPv2-SMI

Integer32
IpAddress
MODULE-IDENTITY
OBJECT-TYPE

OIDs

OID symbolic	OID numeric	Type	Access	Description
snIgmp	1.3.6.1.4.1.1991.1.2.6			Copyright 1996-2010 Brocade Communications Systems, Inc. All rights reserved. This Brocade Communications Systems SNMP Management Information Base Specification embodies Brocade Communications Systems' confidential and proprietary intellectual property. Brocade Communications Systems retains all title and ownership in the Specification, including any revisions. This Specification is supplied AS IS, and Brocade Communications Systems makes no warranty, either express or implied, as to the use, operation, condition, or performance of the specification, and any unintended consequence it may on the user environment.
snIgmpMIBObjects	1.3.6.1.4.1.1991.1.2.6.1
INT snIgmpQueryInterval	1.3.6.1.4.1.1991.1.2.6.1.1	INTEGER	read-write	This is the time interval at which this entity sends out IGMP host query packets. For a router, snDvmrpEnable must have been set to 'enabled' before this object is writen. For a switch, snSwGroupIpMcastMode must have been set to 'enabled' and snSwIpMcastQuerierMode must have been set to 'querier' before this object is writen. Value 0 cannot be used for SET operations. This value is returned if IGMP is not configured within the system. For FI platform the configurable range for this object is 10 .. 3600
INT snIgmpGroupMembershipTime	1.3.6.1.4.1.1991.1.2.6.1.2	INTEGER	read-write	This is the time interval after which a group is considered inactive. For a router, snDvmrpEnable must have been set to 'enabled' before this object is writen. For a switch, snSwGroupIpMcastMode must have been set to 'enabled' before this object is writen. Value 0 cannot be used for SET operations. This value is returned if IGMP is not configured within the system. For FI platform the configurable range for this object is 20 .. 7200
snIgmpIfTable	1.3.6.1.4.1.1991.1.2.6.1.3		not-accessible	This table comprises of a list of IGMP interface entries.
snIgmpIfEntry	1.3.6.1.4.1.1991.1.2.6.1.3.1		not-accessible	An entry (conceptual row) contains the group membership information for that port.
I32 snIgmpIfEntryIndex	1.3.6.1.4.1.1991.1.2.6.1.3.1.1	Integer32	read-only	The table entry index.
I32 snIgmpIfPortNumber	1.3.6.1.4.1.1991.1.2.6.1.3.1.2	Integer32	read-only	This is the interface on which the group was learnt.
IP snIgmpIfGroupAddress	1.3.6.1.4.1.1991.1.2.6.1.3.1.3	IpAddress	read-only	The group address learnt from the interface.
I32 snIgmpIfGroupAge	1.3.6.1.4.1.1991.1.2.6.1.3.1.4	Integer32	read-only	This is the interval (seconds) after which the group information will be aged out.
snIgmpStaticGroupTable	1.3.6.1.4.1.1991.1.2.6.1.4		not-accessible	This table comprises of a list of IGMP static group entries.
snIgmpStaticGroupEntry	1.3.6.1.4.1.1991.1.2.6.1.4.1		not-accessible	An entry (conceptual row) contains the IGMP static group membership information.
I32 snIgmpStaticGroupIfIndex	1.3.6.1.4.1.1991.1.2.6.1.4.1.1	Integer32	read-only	The interface of which the static group was configured.
IP snIgmpStaticGroupAddress	1.3.6.1.4.1.1991.1.2.6.1.4.1.2	IpAddress	read-only	The group address of which the static group was configured.
OCT snIgmpStaticGroupPortList	1.3.6.1.4.1.1991.1.2.6.1.4.1.3	OCTET STRING	read-write	A list of ports which are the port membership of the static group. Each port is a 16-bit integer ifIndex.
INT snIgmpStaticGroupRowStatus	1.3.6.1.4.1.1991.1.2.6.1.4.1.4	INTEGER	read-write	To create or delete a static group entry.

RFC description

Controls IGMP multicast group membership and query parameters on Brocade/Foundry network switches and routers.

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Download FOUNDRY-SN-IGMP-MIB

What Is FOUNDRY-SN-IGMP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description