MPLS LDP Graceful Restart

MPLS LDP graceful restart provides for the preservation of the local forwarding state during the restart of an LDP session. MPLS LDP graceful restart has two elements to its configuration:

• Reconnect Timeout Period – The time that the local LDP sends to its graceful restart peer, indicating how long its neighbor should wait for reconnection in the event of an LDP session failure
• Hold Time Period – The time the local forwarding state is preserved (without being reclaimed) after the local LDP control plane restarts

Use the mpls ldp graceful-restart command in the global VRF global configuration mode to enable MPLS LDP graceful restart on the router.