By default, the switch 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 switch to discard IGMP messages without the Router-Alert option.
By default, the switch sends IGMP messages with the Router-Alert option.
The system view is displayed.
The VLAN view is displayed.
The device is configured to check whether IGMP messages contain the Router-Alert option.
The device is configured to send only IGMP messages with the Router-Alert option.