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CLI-based Configuration Guide - IP Multicast

AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R007

This document describes the principles and configurations of IP multicast, and provides configuration examples.
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Configuring Fast Leave for Member Ports

Configuring Fast Leave for Member Ports


When the router receives IGMP Leave messages from a member port, the fast leave function allows the router to immediately delete forwarding entries of the member port but not reset the aging timer.

  • Enable fast leave for member ports in the VLAN only when each interface in a VLAN is connected to one receiver host.

  • Prompt leave takes effect for member ports in a VLAN only when the router can process IGMPv2 or IGMPv3 messages.


  1. Run:


    The system view is displayed.

  2. Run:

    vlan vlan-id

    The VLAN view is displayed.

  3. Run:

    igmp-snooping prompt-leave [ group-policy acl-number ]

    Prompt leave is configured on the member port.

    By default, no member port is allowed to fast leave a multicast group.

    You can limit the number of member ports that fast leave a multicast group by using the group-policy parameter. In this case, create an access control list (ACL) and configure an ACL rule. The default ACL rule permit is applicable to all multicast groups. Therefore, to enable the member ports to fast leave a specified multicast group, run the rule deny source any command. For details on how to configure an ACL, see "ACL Configuration" in the Huawei AR Series Access Routers Configuration Guide - Security.

Updated: 2019-06-12

Document ID: EDOC1000097181

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