Related Specifications; Configuring Igmp - H3C S3610 Series Operation Manual

Operation Manual – Multicast Protocol
H3C S3610&S5510 Series Ethernet Switches
When IGMPv3 is running between the hosts and routers, Host B can request to join the
multicast group G corresponding to Source 1, or request to leave the multicast group G
corresponding to Source 2. Thus, only multicasts from Source 1 can reach Host B.
II. Enhancements in query and report capabilities
1) Query message carrying the source address
IGMPv3 supports not only general queries (feature of IGMPv1) and group-specific
queries (feature of IGMPv2), but also group-and-source-specific queries.
A general query does not carry a group address, nor a source addresses;
A group-specific query carries a group address, but no source addresses;
A group-and-source-specific query carries a group address and one or more
source addresses.
2) Reports containing multiple group records
In IGMPv3, the destination address of a report is 224.0.0.22, and a report can contain
one or more group records. Each group record contains a multicast group address and
an uncertain number of source addresses.
Group record types include:
3) Current-state record: Sent in response to a query received on an interface, a
current-state record reports the current reception state of that interface, which can
be either of these two types: Include (the interface has a filter mode of Include for
the specified multicast address list) and Exclude (the interface has a filter mode of
Exclude for the specified multicast address list).
4) Filter-mode-change record: A filter-mode-change record indicates that the
interface filter mode has changed from Include to Exclude or from Include to
Exclude for the specified multicast address list.
5) Source-list-change record: A source-list-change record indicates that new source
addresses are allowed or old source addresses are blocked.

5.1.5 Related Specifications

The following documents describe different IGMP versions:
RFC 1112: Host Extensions for IP Multicasting
RFC 2236: Internet Group Management Protocol, Version 2
RFC 3376: Internet Group Management Protocol, Version 3

5.2 Configuring IGMP

Complete these tasks to configure IGMP:
5-5
Chapter 5 IGMP Configuration