Enabling multicast forwarding on a non-querier interface

About multicast forwarding capability of 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.

Restrictions and guidelines

A shared-media network might have multiple MLD proxies, including one proxy acting as a querier. To avoid duplicate multicast traffic, do not enable multicast forwarding on any of the non-querier MLD proxies for the network.

Procedure

  1. Enter system view.

    system-view

  2. Enter interface view.

    interface interface-type interface-number

  3. Enable multicast forwarding on the interface.

    igmp proxy forwarding

    By default, multicast forwarding is disabled on a non-querier interface.