Viewing IGMP snoop information

View information about IGMP snoop to see the current configuration.

About this task

You can configure IGMP on a VRF instance the same way you configure the Global Router except that you must first launch the appropriate VRF context.

Procedure

In the navigation pane, expand the following folders: Configuration > IP.
Click IGMP.
Click the Snoop tab.

Snoop field descriptions

Use the data in the following table to use the Snoop tab.


Name	Description
Interface	Shows the VLAN ID for the VLAN.
SnoopEnable	Shows the status of IGMP snoop. IGMP snoop works only if a multicast router exists in the VLAN.
SsmSnoopEnable	Shows the status of SSM snoop.
ProxySnoopEnable	Indicates whether the IGMP report proxy feature is enabled. If you enable this feature, the switch forwards reports from hosts to the multicast router once for each group for each query interval, or after new group information is available. If you disable this feature, the switch forwards all reports from different hosts to multicast routers, and can forward more than one group report for the same multicast group for each query interval. The default is enabled.
FastLeaveEnable	Shows the status of fast leave for this port.
FastLeavePortMembers	Lists ports that are enabled for fast leave.
SnoopMRouterPorts	Shows the configuration of ports as multicast router ports. Such ports attach to a multicast router, and forward multicast data and group reports to the router. Important: Configure this variable only if you use multiple multicast routers that do not attach to one another, but attach to the VLAN (technically, an invalid configuration). If multicast routers use a route between them (the valid configuration) and you configure this variable, a multicast loop forms.
SnoopActiveMRouterPorts	Shows the active multicast router ports. Active multicast router ports are ports that directly attach to a multicast router. These ports include the querier port and all ports in the forwarding state that you configure as well as those that were dynamically learned through receiving queries.
SnoopMRouterExpiration	Indicates the time that remains before the multicast router ages out. If the switch does not receive queries before this time expires, it flushes out all group memberships known to the VLAN. The query maximum response interval (obtained from the queries received) is used as the timer resolution.