LevelOne MSL-3S79 - Manual (Page 51)

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SNTP Configuration interface
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6.6.6 IGMP
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.
Join Group
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.
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6.6.6.1 IGMP Configuration
The switch support IP multicast, user can enable IGMP protocol on web
management’s switch setting advanced page, then display the IGMP snooping