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 - Security

S1720, S2700, S5700, and S6720 V200R011C10

This document describes the configurations of Security, including ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, Port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, URPF, keychain, MPAC, separating the management plane from the service plane, security risks, PKI.
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) Discarding IGMP Query Messages Sent form Users

(Optional) Discarding IGMP Query Messages Sent form Users


By default, the Switch discards IGMP Query messages sent from users in a VLAN after MFF is enabled in the VLAN. If IGMP snooping is also enabled in the VLAN, the Switch still processes IGMP Query messages sent from users because IGMP snooping takes precedence over MFF. IGMP Query messages are then broadcast in the VLAN and forwarded to network-side devices. This affects IGMP querier election on the upstream devices and causes multicast service failures.

In this scenario, configure the Switch to discard IGMP Query messages sent from users.


  1. Run system-view

    The system view is displayed.

  2. Run vlan vlan-id

    The VLAN view is displayed.

  3. Run mac-forced-forwarding igmp-query discard

    The Switch is configured to discard IGMP Query messages sent form users.

    By default, the Switch does not discard IGMP Query messages from users when both MFF and IGMP snooping are enabled in a VLAN.

Updated: 2019-09-23

Document ID: EDOC1000178177

Views: 230919

Downloads: 744

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