H3C S7500 Series Ethernet Switches Release 3135 DHCP Configuration Examples

Multicast Protocol Configuration Examples
H3C S7500 Series Ethernet Switches Release 3135 Chapter 1 Multicast Protocol Overview
1-2
groups. By analyzing received IGMP messages, a Layer 2 device running IGMP
Snooping establishes mappings between ports and MAC multicast groups and
forwards multicast data based on these mappings.
IV. IGMP Proxy
When a multicast routing protocol (such as PIM-DM) is deployed on a large network,
many stub networks may exist. It is tedious work to configure and manage these stub
networks.
To minimize the workload of such configuration and management without affecting the
multicast connections of the multicast networks, you can configure IGMP Proxy on a
Layer 3 switch in the edge networks, so that the Layer 3 switch forwards the IGMP join
and IGMP leave messages sent by the hosts attached to it. After the IGMP Proxy
configuration, the Layer 3 switch is no longer a PIM neighbor to the external network;
instead, it is a host. The Layer 3 switch receives multicast data for a multicast group
only when a member of that group is directly attached to it.
1.2 Configuration Guidance
The following configuration guidance describes the configuration of multicast features
based on the implementations on the S5600 series Ethernet switches. For more
information, see the corresponding operation manuals.
1.2.1 Configuring IGMP Snooping
Complete these tasks to configure IGMP Snooping:
Configuration task Remarks
Enabling IGMP Snooping
Required
Configuring IGMP-Snooping timers Optional
Configuring fast leave processing Optional
Configuring a multicast group filter Optional
Configuring the maximum number of multicast groups that
can be joined on a port
Optional
Configuring IGMP Snooping querier Optional
I. Enabling IGMP Snooping
Follow these steps to enable IGMP Snooping: