mld-snooping send-router-alert
Function
The mld-snooping send-router-alert command configures the wireless access controller to send MLD messages with the Router-Alert option in the IP header to a VLAN.
The undo mld-snooping send-router-alert command configures the wireless access controller to send MLD messages without the Router-Alert option to a VLAN.
By default, the MLD messages sent by the wireless access controller contain the Router-Alert option.
Usage Guidelines
Usage Scenario
The Router-Alert option identifies the protocol messages that need to be processed by upper-layer routing protocols.
By default, the wireless access controller sends MLD messages with the Router-Alert option. If some devices in the same VLAN as the wireless access controller can process only the MLD messages without the Router-Alert option, use the undo igmp-snooping send-router-alert command to configure the wireless access controller to send MLD messages without the Router-Alert option.
The wireless access controller adds the Router-Alert option only to locally originated MLD messages and does not add this option to MLD messages received from other devices.
Prerequisites
MLD snooping has been enabled globally using the mld-snooping enable command.
Precautions
The configuration takes effect only after you run the mld-snooping_enable command to enable MLD snooping in the VLAN.
