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.


Configuration Guide - IP Multicast

S7700 and S9700 V200R010C00

This document describes IP multicast basics and how to configure IP multicast features, including IGMP/MLD, PIM (IPv4&IPv6), MSDP, multicast VPN, Layer 3 multicast CAC, Layer 2 multicast CAC, IGMP/MLD snooping, and multicast VLAN, IPv4&IPv6 multicast route management, static multicast MAC address, multicast network.
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).
Sending Query Messages upon Network Topology Change

Sending Query Messages upon Network Topology Change


When the topology of a Layer 2 network changes, forwarding paths of multicast packets may change. You can configure the switch to send MLD Query messages upon link failures. When the switch receives MLD Report messages from group members, it updates member port information according to messages. This enables multicast traffic to be quickly switched to new forwarding paths.


  1. Run:


    The system view is displayed.

  2. Run:

    mld-snooping send-query enable

    The switch is configured to send MLD General Query messages when network topology changes.

    By default, the switch does not send MLD General Query messages when network typology changes.

    This command enables the switch to detect Layer 2 network topology changes and send MLD General Query messages. The switch can then quickly update group member port information to prevent interruption of multicast data forwarding.

  3. (Optional) Run:

    mld-snooping send-query source-address ipv6-address

    The source IPv6 address of the MLD General Query message is configured.

    By default, the source IPv6 address of MLD General Query messages is a link local address, an IPv6 address starting with FE80::. If another device on the network is using the default source IPv6 address, run this command to change the source IP address.

Updated: 2019-08-21

Document ID: EDOC1000141903

Views: 153216

Downloads: 111

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