Configuring OSPF FRR to calculate a backup next hop using the LFA algorithm

1. Enter system view.

system-view

N/A

2. Configure the source address of echo packets.

bfd echo-source-ip ip-address

By default, the source address of echo packets is not configured.

3. Enter interface view.

interface interface-type interface-number

N/A

4. Enable LFA calculation on an interface.

ospf fast-reroute lfa-backup

By default, the interface on which LFA calculation is enabled can be selected as a backup interface.

5. Return to system view.

quit

N/A

6. Enter OSPF view.

ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] *

N/A

7. Enable OSPF FRR to calculate a backup next hop by using the LFA algorithm.

fast-reroute lfa [ abr-only ]

By default, OSPF FRR is not configured.

If abr-only is specified, the route to the ABR is selected as the backup path.