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VDSL SERIES
CTC Union
30
4-4-6. Filter Database
4-4-6-1. IGMP Snooping
The VRM01/24 supports IP multicast, you can enable IGMP protocol on web management’s
switch setting advanced page, then display the IGMP snooping information in this page, you can
view difference multicast group ,VID and member port in here, IP multicast addresses range
from 224.0.0.0 through239.255.255.255.
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 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
m ember of a specific multicast group.
Содержание VRM01/24
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