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
Context
By default, the router does not check whether IGMP messages contain the Router-Alert option and sends all the IGMP messages to the upper-layer routing protocol. To improve device performance, reduce transmission cost, and enhance protocol security, configure the router to discard IGMP messages without the Router-Alert option.
By default, the router sends IGMP messages with the Router-Alert option.
For details about the Router-Alert option, see RFC 2113.
Procedure
- Run system-view
The system view is displayed.
- Run vlan vlan-id
The VLAN view is displayed.
- Run igmp-snooping require-router-alert
The device is configured to check whether IGMP messages contain the Router-Alert option.
- Run igmp-snooping send-router-alert
The device is configured to send only IGMP messages with the Router-Alert option.