Enabling the Capability of Passively Creating BFD Sessions on the Egress

On a unidirectional LSP, creating a BFD session on the ingress playing the active role triggers the sending of LSP ping request messages to the egress node playing the passive role. Only after the passive role receives the ping packets, a BFD session can be automatically established.

Context

Perform the following steps on the egress:

Procedure

Run system-view
The system view is displayed.
Run bfd
The BFD view is displayed.
(Optional) Run passive-session udp-port 3784 peer peer-ip
The destination UDP port number of a specified passive BFD session is set.
(Optional) Run passive-session detect-multiplier multiplier-value peer peerip-value
The command changes the detection multiplier of a passive BFD session.
Run mpls-passive
The capability of passively creating BFD sessions is enabled.

After this command is run, a BFD session can be created only after the egress receives an LSP ping request message containing the BFD TLV from the ingress.
Run commit
The configuration is committed.