Enabling MPLS to Dynamically Establish BFD Sessions

Procedure

• Perform the following steps on the ingress node:
  1. Run system-view

     The system view is displayed.

  2. Run mpls

     The MPLS view is displayed.

  3. Run mpls bfd enable

     An LDP LSP is enabled with the capability of creating BFD session dynamically.

     By default, an ingress cannot dynamically create BFD sessions for monitoring LDP LSPs.

     The BFD session is not created after this command is run.

• Perform the following steps on the egress node:
  1. Run system-view

     The system view is displayed.

  2. Run bfd

     The BFD view is displayed.

  3. Run mpls-passive

     The function of creating BFD session passively is enabled.

     By default, the egress node of an LSP cannot passively create a BFD session.

     Running this command cannot create a BFD session. The BFD session is not created until the egress node receives the request packet that contains LSP ping of BFD TLV from the ingress node.