Configuring BFD for P2MP TE

BFD for P2MP TE rapidly monitors P2MP TE tunnels, which helps speed up responses to faults and improve network reliability.

Usage Scenario

If P2MP TE tunnels are established to transmit NG MVPN and multicast VPLS services, BFD for P2MP TE can be configured to rapidly detect faults in P2MP TE tunnels, which improves network reliability. To configure BFD for P2MP TE, run the bfd enable command in the P2MP tunnel template view so that BFD sessions for P2MP TE can be automatically established while P2MP TE tunnels are being established.

Context

Before configuring BFD for P2MP TE, configure an automatic P2MP TE tunnel.

Procedure

Configure the ingress.
1. Run system-view
  The system view is displayed.
2. Run bfd
  BFD is enabled.
3. Run quit
  Return to the system view.
4. Run mpls te p2mp-template template-name
  A P2MP tunnel template is created, and the P2MP tunnel template view is displayed.
5. Run bfd enable
  BFD for P2MP TE is enabled.
6. (Optional) Run bfd { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier } ^*
  BFD for P2MP TE parameters are set.
7. Run commit
  The configuration is committed.
Configure each leaf node.
1. Run system-view
  The system view is displayed.
2. Run bfd
  BFD is enabled, and the BFD view is displayed.
3. Run mpls-passive
  The egress is enabled to create a BFD session passively.
  
  The egress has to receive an LSP ping request carrying a BFD TLV before creating a BFD session.
4. Run commit
  The configuration is committed.

Checking the Configurations

Run the display bfd multicast session { all | p2mp-te [ p2mp-id p2mp-id ingress-lsr-id tunnel-id tunnel-id ] } command to check BFD for P2MP TE session information.