Configuration procedure
Configuring OSPF FRR to calculate a backup next hop using the LFA algorithm
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. | interface interface-type interface-number | N/A |
3. (Optional.) Enable LFA on an interface. | ospf fast-reroute lfa-backup | By default, the interface is enabled with LFA and it can be selected as a backup interface. |
4. Return to system view. | quit | N/A |
5. Enter OSPF view. | ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * | N/A |
6. Enable OSPF FRR to calculate a backup next hop by using the LFA algorithm. | fast-reroute lfa [ abr-only ] | By default, OSPF FRR is disabled. If abr-only is specified, the route to the ABR is selected as the backup path. |
Configuring OSPF FRR to specify a backup next hop using a routing policy
Before you perform this task, use the apply fast-reroute backup-interface command to specify a backup next hop in the routing policy to be used. For more information about the apply fast-reroute backup-interface command and routing policy configuration, see "Configuring routing policies."
To configure OSPF FRR to specify a backup next hop using a routing policy:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter OSPF view. | ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * | N/A |
3. Enable OSPF FRR to specify a backup next hop by using a routing policy. | fast-reroute route-policy route-policy-name | By default, OSPF FRR is disabled. |
Configuring BFD for OSPF FRR
By default, OSPF FRR does not use BFD to detect primary link failures. To speed up OSPF convergence, enable BFD for OSPF FRR to detect primary link failures.
To configure BFD control packet mode for OSPF FRR:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. | interface interface-type interface-number | N/A |
3. Enable BFD control packet mode for OSPF FRR. | ospf primary-path-detect bfd ctrl | By default, BFD control packet mode for OSPF FRR is disabled. |
To configure BFD echo packet mode for OSPF FRR:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Configure the source IP address of BFD echo packets. | bfd echo-source-ip ip-address | By default, the source IP address of BFD echo packets is not configured. The source IP address cannot be on the same network segment as any local interface's IP address. For more information about this command, see High Availability Command Reference. |
3. Enter interface view. | interface interface-type interface-number | N/A |
4. Enable BFD echo packet mode for OSPF FRR. | ospf primary-path-detect bfd echo | By default, BFD echo packet mode for OSPF FRR is disabled. |