Enabling an MPLS Device to Dynamically Establish a BGP BFD Session

Procedure

• Perform the following steps on the ingress of an E2E BGP tunnel:
  1. Run system-view

     The system view is displayed.

  2. Run bfd

     BFD is enabled globally.

  3. Run quit

     Return to the system view.

  4. Run mpls

     The MPLS view is displayed.

  5. Run mpls bgp bfd enable

     The ability to dynamically establish BGP BFD sessions is enabled on the ingress.

     The mpls bgp bfd enable command does not create a BFD session. A BGP BFD session can only be dynamically established only after a policy for dynamically establish BGP BFD session is configured.

  6. Run commit

     The configuration is committed.

• Perform the following steps on the egress of an E2E BGP tunnel:
  1. Run system-view

     The system view is displayed.

  2. Run bfd

     BFD is enabled globally, and the BFD view is displayed.

  3. Run mpls-passive

     The capability of passively creating a BFD session is configured on the egress.

     The mpls-passive command does not create a BFD session. The egress has to receive an LSP ping request carrying a BFD TLV before creating a BFD session with the ingress.

  4. Run commit

     The configuration is committed.