No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.


CLI-based Configuration Guide - IP Multicast

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
(Optional) Configuring the Router-Alert Option

(Optional) Configuring the Router-Alert Option


By default, the router does not check whether Multicast Listener Discovery (MLD) packets contain the Router-Alert option and sends all the MLD packets to the upper-layer routing protocol no matter whether the packets contain the Router-Alert option. Checking the Router-Alert option can improve system performance, reduce route costs, and increase network security. When the received MLD packets do not contain the Router-Alert option, the router discards the packets.

By default, the router sends MLD packets with the Router-Alert option.

For details about the Router-Alert option, see RFC 2113.


  1. Run system-view

    The system view is displayed.

  2. Run vlan vlan-id

    The VLAN view is displayed.

  3. Run mld-snooping require-router-alert

    The router is configured to check the Router-Alert option in MLD packets.

  4. Run mld-snooping send-router-alert

    The Router-Alert option is added to the MLD packets sent by the router.

Updated: 2019-03-06

Document ID: EDOC1100069332

Views: 21513

Downloads: 59

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Previous Next