Enables Internet Group Management Protocol (IGMP) snooping fast-leave processing for a VLAN. This allows the removal of an interface from the forwarding table without sending out group-specific queries to the interface.
By default, fast-leave processing is enabled.
VLAN configuration mode.
Use the no ip igmp snooping fast-leave form of the command to disable this function.
To enable snooping fast-leave for a specific VLAN:
device(config)# vlan 1 device(config-Vlan-1)# ip igmp snooping fast-leave