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Multicast-Router Interfaces and IGMP Snooping Proxy Mode

On multicast-router interfaces, in response to IGMP queries, IGMP snooping in proxy mode sends reports containing aggregate information on groups learned on all host-side interfaces of the bridge.

Besides replying to queries, IGMP snooping in proxy mode forwards all queries, reports, and leaves received on a multicast-router interface to other multicast-router interfaces. IGMP snooping keeps the membership information learned on this interface but does not send a group-specific query for leave messages received on this interface. It simply times out the groups learned on this interface if there are no reports for the same group within the timer duration.

Note: For the hosts on all the multicast-router interfaces, it is the IGMP router, not the IGMP snooping proxy, that generates general and group-specific queries.

Published: 2013-08-13

Supported Platforms

Published: 2013-08-13