Enable the Fast Leave Process

1. Enter the configuration mode for the VLAN interface.

   SEFOS# configure terminal
   SEFOS(config)# vlan 4
   

2. Enable the fast leave process.

   SEFOS(config-vlan)# ip igmp snooping fast-leave
   SEFOS(config-vlan)# end
   

3. Review the configuration.

   SEFOS# show ip igmp snooping
    
   Snooping VLAN Configuration for the VLAN 4
     IGMP Snooping enabled
     IGMP configured version is V3
     Fast leave is enabled
     Snooping switch is configured as Non-Querier
     Snooping switch is acting as Non-Querier
     Query interval is 125 seconds
     Port Purge Interval is 260 seconds
     Max Response Code is 100, Time is 10 seconds