FORE-IGMP-MIB :: ipmcPortGroup

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › FORE-IGMP-MIB › ipmcPortGroup

ipmcPortGroup

Module: FORE-IGMP-MIB

OID (symbolic): FORE-IGMP-MIB::ipmcPortGroup

OID (numeric): 1.3.6.1.4.1.326.1.8.3.1.1.2

Node type: OBJECT-TYPE

Type: DisplayString

Access: read-only

Description: The port group for which this entry contains IP multicast info.

What is ipmcPortGroup?

This object holds a text representation of the port group associated with a specific IP multicast address entry, listing which switch ports are members receiving that multicast stream. An administrator reads this to see exactly which physical ports are currently forwarding a given multicast group's traffic, useful when troubleshooting a client not receiving an expected stream. It might contain a value like "1,3,5-8" listing the specific ports currently in that multicast group's forwarding set.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.326.1.8.3.1.1.2
snmpwalk -v2c -c public <target> FORE-IGMP-MIB::ipmcPortGroup

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.326.1.8.3.1.1.2.1
snmpget -v2c -c public <target> FORE-IGMP-MIB::ipmcPortGroup.1

Start monitoring Fore Systems (later Marconi) ATM switch/router (IGMP multicast over ATM) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the FORE-IGMP-MIB::ipmcPortGroup OID value, configure state conditions and alerts, and monitor any Fore Systems (later Marconi) ATM switch/router (IGMP multicast over ATM) from a single console.

OID Breakdown

Upper-level ancestors (9 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.326foreCOMMON-GOLF-MIB
1.3.6.1.4.1.326.1adminFore-Common-MIB
1.3.6.1.4.1.326.1.8preDot1qVlanMIBFore-Common-MIB
Numeric OIDNameModule
1.3.6.1.4.1.326.1.8.3foreIgmpModuleFORE-IGMP-MIB
1.3.6.1.4.1.326.1.8.3.1igmpIpmcTableFORE-IGMP-MIB
1.3.6.1.4.1.326.1.8.3.1.1igmpIpmcEntryFORE-IGMP-MIB
1.3.6.1.4.1.326.1.8.3.1.1.2ipmcPortGroupFORE-IGMP-MIB