This object turns IGMP Snooping on or off device-wide, true(1) to activate it or false(2) to stop it, defaulting to false. An admin enables this to have the switch inspect IGMP traffic and restrict multicast flooding to only the ports with interested receivers, rather than flooding multicast to every port on a VLAN. For example, an admin deploying IPTV over a switched network would set this to true(1) to prevent multicast video streams from being flooded to every port.