HP-SN-IGMP-MIB

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Category: Technology: Multicast, Vendor: HP/HPE

Description: HP ServerNet (Foundry-heritage) SNMP MIB for IGMP multicast group membership management on HP SN routing switches.

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What Is HP-SN-IGMP-MIB?

HP-SN-IGMP-MIB is an HP ServerNet (Foundry Networks-heritage 'SN' line) MIB for managing IGMP multicast group membership on HP SN-series routing switches. It exposes global IGMP timers (query interval, group membership time) and a per-interface table recording the multicast group address learned on each port, its age, and the port number, giving a live view of IGMP snooping/multicast group state. Its monitoring value is centered on multicast software/protocol status - confirming which multicast groups are active on which ports and whether membership timers are behaving as expected - rather than hardware sensors. It implements IGMP (RFC 2236 and related) concepts as a vendor enterprise MIB rather than depending on a specific standard IGMP MIB, though it parallels the IETF IGMP MIB's general approach. It is typically deployed on HP SN-series (Foundry-heritage) routing switches in networks running IP multicast applications such as video distribution. Engineers can download the HP-SN-IGMP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HP-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

HP SN-series (Foundry-heritage) routing switch

Monitoring Examples

An operator would check snIgmpQueryInterval and snIgmpGroupMembershipTime for the configured IGMP timers, then walk snIgmpIfTable/snIgmpIfEntry via snIgmpIfPortNumber to see snIgmpIfGroupAddress and snIgmpIfGroupAge for each learned multicast group. If a group's snIgmpIfGroupAge approaches snIgmpGroupMembershipTime without a refresh, that signals the group membership is about to time out, potentially interrupting a multicast stream to that port. This lets multicast administrators confirm receivers are actively refreshing their group memberships.

What Can Be Monitored

IGMP query interval
group membership timeout
learned multicast group address per port
group membership age
IGMP-enabled port number

Imported Objects

From HP-SN-ROOT-MIB

snIgmp

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

IpAddress

OIDs

OID symbolic	OID numeric	Type	Access	Description
snIgmpMIBObjects	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1
INT snIgmpQueryInterval	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.1	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.
INT snIgmpGroupMembershipTime	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.2	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.
snIgmpIfTable	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.3		not-accessible	This table comprises of a list of IGMP interface entries.
snIgmpIfEntry	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.3.1		not-accessible	An entry (conceptual row) contains the group membership information for that port.
INT snIgmpIfEntryIndex	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.3.1.1	INTEGER	read-only	The table entry index.
INT snIgmpIfPortNumber	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.3.1.2	INTEGER	read-only	This is the interface on which the group was learnt.
IP snIgmpIfGroupAddress	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.3.1.3	IpAddress	read-only	The group address learnt from the interface.
INT snIgmpIfGroupAge	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.3.1.4	INTEGER	read-only	This is the interval (seconds) after which the group information will be aged out.
snIgmpStaticGroupTable	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.4		not-accessible	This table comprises of a list of IGMP static group entries.
snIgmpStaticGroupEntry	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.4.1		not-accessible	An entry (conceptual row) contains the IGMP static group membership information.
INT snIgmpStaticGroupIfIndex	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.4.1.1	INTEGER	read-only	The interface of which the static group was configured.
IP snIgmpStaticGroupAddress	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.4.1.2	IpAddress	read-only	The group address of which the static group was configured.
OCT snIgmpStaticGroupPortList	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.4.1.3	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	1.3.6.1.4.1.11.2.3.7.11.12.2.6.1.4.1.4	INTEGER	read-write	To create or delete a static group entry.

RFC description

HP vendor-private MIB extending IGMP (Internet Group Management Protocol) monitoring on HP managed switches with HP-specific objects.

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Download HP-SN-IGMP-MIB

What Is HP-SN-IGMP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description