Enabling Auto TE FRR

Procedure

1. Run system-view

   The system view is displayed.

2. Run mpls

   The MPLS view is displayed.

3. Run mpls te auto-frr

   Auto TE FRR is enabled globally.

   After auto TE FRR is enabled globally, link protection is enabled on all interfaces enabled with MPLS TE.

4. (Optional) Configure MPLS TE Auto FRR in the interface view.
   1. Run quit

      Return to the system view.

   2. Run interface interface-type interface-number

      The interface view of the outbound interface of the primary tunnel is displayed.

   3. (Optional) On an Ethernet interface, run undo portswitch

      The interface is switched to Layer 3 mode.

      By default, an Ethernet interface works in Layer 2 mode.

      

      Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support switching between Layer 2 and Layer 3 modes.

   4. Run mpls te auto-frr { link | node | default }

      Auto TE FRR is enabled on the outbound interface on the ingress node of the primary tunnel.

      To implement link protection, specify link. If link is not specified, the system provides only node protection.

      By default, after auto TE FRR is enabled globally, all the MPLS TE interfaces are automatically configured with the mpls te auto-frr default command. To disable auto TE FRR on some interfaces, run the mpls te auto-frr block command on these interfaces. Then, these interfaces no longer have auto TE FRR capability even if auto TE FRR is enabled or is to be re-enabled globally.

      

      After mpls te auto-frr is used in the MPLS view, the mpls te auto-frr default or mpls te auto-frr node command used on an interface protects only nodes. When the topology does not meet the requirement to set up an automatic bypass tunnel for node protection, the penultimate hop (but not other hops) on the primary tunnel attempts to set up an automatic bypass tunnel for link protection.