The Multi-Chassis Link Aggregation (MLAG) Active-Standby for Virtual Private LAN Service (VPLS) feature facilitates the implementation of the MLAG Active-Standby between the VPLS PE devices, enhancing the reliability of VPLS by providing redundancy. During the failure of the Active MLAG link, the Stabdy link becomes Active, changing the topology. The change in the topology requires MAC flush in the peer devices. This feature supports the automatic forwarding of MAC flush messages to the peer devices by configuring mac flush send on mlag switchover command.

For more information, refer to the MLAG Active-Standby for VPLS section in OcNOS Multi-Protocol Label Switching Guide, Release 6.6.0.