Description: Parameter to enable or disable IGMP snooping on the device.
When enabled,  the device will examine IGMP packets and set
up filters for IGMP ports.

The Internet Group Management Protocol (IGMP) is an internal
protocol of the Internet Protocol (IP) suite. IP manages
multicast traffic by using switches,  routers,  and hosts that
support IGMP. Enabling IGMP allows the ports to detect IGMP
queries and report packets and manage IP multicast traffic
through the switch. IGMP have three fundamental types of
message as follows:

Message     Description
--------------------------------------------------------------
Query       A message sent from the querier (IGMP router or switch)
            asking for a response from each host belonging to the
            multicast group.

Report      A message sent by a host to the querier to indicate
            that the host wants to be or is a member of a given
            group indicated in the report message.

Leave Group A message sent by a host to the querier to indicate
            that the host has quit to be a member of a specific
            multicast group.

You can enable IGMP protocol and IGMP Query function. You will see
the IGMP snooping information in this section -- difference
multicast group VID and member port,  and IP multicast addresses
range from 224.0.0.0 through 239.255.255.255.