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CLI-based Configuration Guide - IP Multicast

AR500, AR510, AR531, AR550, AR1500, and AR2500 V200R010

This document describes the concepts and configuration procedures of IP Service features on the device, and provides the configuration examples.
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Configuring Fast Leave for Member Ports

Configuring Fast Leave for Member Ports


When the industrial switch router receives IGMP Leave messages from a member interface, the fast leave function allows the industrial switch router immediately deletes forwarding entries of the member interface 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 industrial switch router can process IGMPv2 or IGMPv3 messages.


  1. Run system-view

    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 IOT Gateway Configuration Guide - Security.

Updated: 2019-08-09

Document ID: EDOC1100034230

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