Configuring LDP Extension for Inter-Area LSPs

LDP extension for inter-area LSPs can be configured on the ingress and transit nodes.

Run system-view
The system view is displayed.
Run mpls ldp
The MPLS-LDP view is displayed.
Run longest-match
LDP is configured to search for routes based on the longest match rule to establish LSPs.

The longest-match command cannot be run during LDP GR.