Lantech 2204F Series, User Manual

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5.20 Multicast Support
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, report
packets, and manage IP multicast traffic through the switch. IGMP have three
fundamental types of message shown 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 being a member of a specific multicast group.
6.20.1 IGMP Snooping
The switch
support IP multicast, you can enable IGMP protocol on web management’s
switch setting advanced page, then the IGMP snooping information displays. IP
multicast addresses range are from 224.0.0.0 through 239.255.255.255.

IGMP Protocol: enable or disable the IGMP protocol.

IGMP Query: enable or disable the IGMP query function. The IGMP query
information will be displayed in IGMP status section.

IGMP Unregister Stream: let the switch know how to process the Multicast data
stream which was unregistered with IGMP Query.

Click
Apply
.