The evpn reserve-interface enhancement command enables the device to deliver backup leaf node information to the standby interface board, which helps improve the switching performance of broadcast traffic if the master board fails.
The undo evpn reserve-interface enhancement command restores the default configuration.
By default, the device do not deliver backup leaf node information to the standby interface board.
Usage Scenario
When packets enter a public network from an EVPN or BD EVPN for BUM forwarding, board selection for internal loopback is performed based on a main control board, run the evpn reserve-interface enhancement command, this configuration allows primary and backup leaf nodes to be delivered to different boards for protection, after a board is removed, the PST down event on the reserved interface triggers a primary/backup leaf node switchover, improving the link switching performance.