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    Verifying the IGMP Snooping Group Timeout Value

    Purpose

    Verify that the IGMP snooping group timeout value has been changed correctly from its default value.

    Action

    Display the IGMP snooping membership information, which contains the group timeout value that was derived from the IGMP configuration:

    user@switch> show igmp-snooping membership detail
    VLAN: v43 Tag: 43 (Index: 4)
          Group: 225.0.0.1
          Receiver count: 1, Flags: <v2–hosts>
              ge-0/0/15.0 Uptime: 00:00:05 timeout: 510

    Meaning

    The IGMP snooping group timeout value determines how long a switch waits to receive an IGMP query from a multicast router before removing a multicast group from its multicast cache table. When you enable IGMP snooping, the default IGMP snooping group timeout value of 260 seconds is applied to all VLANs, which means that the switch waits 260 seconds to receive an IGMP query before removing a multicast group from its multicast cache table. You can change the timeout value by using the robust-count option.

    Modified: 2017-09-13