Configuration Guidelines; Configuration Procedure - HP FlexFabric 12900E Series Configuration Manual

Configuration guidelines

•
Do not use the fast-reroute lfa command together with the vlink-peer command.
•
When both OSPF PIC and OSPF FRR are configured, OSPF FRR takes effect.

Configuration procedure

Configuring OSPF FRR to calculate a backup next hop using the LFA algorithm
Step
1. Enter system view.
2. Enter interface view.
3. (Optional.) Enable LFA on an
interface.
4. Return to system view.
5. Enter OSPF view.
6. Enable
calculate a backup next hop
by using the LFA algorithm.
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
To configure OSPF FRR to specify a backup next hop using a routing policy:
Step
1. Enter system view.
2. Enter OSPF view.
3. Enable OSPF FRR to specify
a backup next hop by using a
routing policy.
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
1. Enter system view.
Command
system-view
interface
interface-number
ospf fast-reroute lfa-backup
quit
ospf [ process-id | router-id
router-id
vpn-instance-name ] *
OSPF FRR to
fast-reroute lfa [ abr-only ]
Command
system-view
ospf [ process-id | router-id
router-id
vpn-instance-name ] *
fast-reroute
route-policy-name
Command
system-view
Remarks
N/A
interface-type
N/A
By default, the interface is enabled
with LFA and it can be selected as a
backup interface.
N/A
| vpn-instance N/A
By default, OSPF FRR is disabled.
If abr-only is specified, the route to
the ABR is selected as the backup
path.
| vpn-instance
route-policy
101
"Configuring routing policies."
Remarks
N/A
N/A
By default, OSPF
disabled.
Remarks
N/A
FRR is