Transition Networks MIL-SM2401MAF - Manual (Page 71)

Transition Networks MIL-SM2401MAF
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Forwarding and Filtering
IGMP Snooping
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.
The switch supports IP multicast. You can enable IGMP protocol via setting the IGMP
Configuration page to see the IGMP snooping information. IP multicast addresses are
in the range of 224.0.0.0 through 239.255.255.255.
IGMP Protocol: Enable or disable the IGMP protocol.
IGMP Query: Select the IGMP query function as Enable or Auto to set the switch
as a querier for IGMP version 2 multicast networks.
Click Apply button.