HP Integrity rx4640 Server - Manual (Page 47)

5 IGMP support
Internet Group Management Protocol (IGMP) is used to register dynamic multicast group
membership. It can register a router to receive specific multicast traffic. IGMP traffic is only be
sent to those team members that are part of a multicast group.
When a server runs an application that wants to join a multicast group, the join message is sent
out to the aggregation and only those ports in the multicast group. During a failover situation,
the NCU maintains connectivity with the multicast group and responds with IGMP reports.
The HP NCU supports IGMP in this release, but this support does not require any user input in
the NCU; therefore, no windows or controls exist for it.
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