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5-4-6. Filter Database
5-4-6-1. IGMP Snooping
The switch supports IP multicasting. You can enable IGMP via the web
management’s configuration screen. In addition, you can view different
multicast groups, VIDs and member ports, and IP multicast addresses that
range from 224.0.0.0 through 239.255.255.255.
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 has three fundamental types of messages.
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.