recover delay-time

Usage Scenario

In VPLS multi-homing scenarios, if an AC interface becomes active immediately after the PE is restarted, the following problems may occur:

• The local PE immediately becomes the master device. Because the remote PE becomes the backup device only after receiving BGP Update messages carrying the local PE status from the local PE, both PEs become the master devices, forming a loop between the multi-homed CE and the PEs.
• The local PE immediately becomes the master device, but the remote PE cannot converge routes in time, causing traffic loss.
  To prevent these problems, run the recover delay-time command to configure a delay after which an AC interface becomes active. Before delay-time elapses, the AC interface remains in the blocked state. After delay-time elapses, the AC interface is unblocked and becomes active. This prevents dual master devices and traffic loss.

Prerequisites

A multi-homing site ID has been configured using the site-id site-id command.