Example for Configuring Multi-hop BFD for Detecting Link Faults

Latest reply: Dec 26, 2016 08:58:37 822 2 0 0


This example applies to all versions and AR routers.

Applicable Scenario

As shown in Figure 1,RouterA is indirectly connected to RouterC. Static routes are configured so that RouterA can communicate with RouterC. Faults on the link between RouterA and RouterB need to be fast detected.

Figure 13-6  Networking diagram for configuring multi-hop BFD


  1. Configure RouterA.

  2. Configure RouterB.

  3. Configure RouterC.

  4. Verify the configuration.

    After the configuration, run the display bfd session all verbose command on RouterA and RouterC. You can see that a Multi-hop BFD session is set up and (Multi Hop) State field displays Up.

Configuration Notes

  • When creating a multi-hop BFD session for the first time, bind the BFD session to the peer IP address.

  • The local discriminator of the local system must be the same as the remote discriminator of the remote system; the remote discriminator of the local system must be the same as the local discriminator of the remote system.


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Created Dec 26, 2016 08:50:56 Helpful(0) Helpful(0)

  • x
  • convention:

Created Dec 26, 2016 08:58:37 Helpful(0) Helpful(0)

  • x
  • convention:


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