Enabling multicast forwarding on a non-querier interface
Typically, only IGMP queriers can forward multicast traffic and non-queriers cannot. This prevents multicast data from being repeatedly forwarded. If a router interface on an IGMP proxy device failed in the querier election, enable multicast forwarding on the interface to forward multicast data to attached receiver hosts.
Configuration restrictions and guidelines
A shared-media network might have multiple IGMP proxies, including one proxy acting as a querier. To avoid duplicate multicast traffic, do not enable multicast forwarding on any of the non-querier IGMP proxies for the network.
Configuration procedure
To enable multicast forwarding on a non-querier interface:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. | interface interface-type interface-number | N/A |
3. Enable multicast forwarding on the interface. | igmp proxy forwarding | By default, multicast forwarding is disabled on a non-querier interface. |