R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)
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Configuration procedure
Configuring OSPF FRR to calculate a backup next hop using the LFA algorithm
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. 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.
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 not configured.
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 configure this task, use the apply fast-reroute backup-interface command to specify a backup
next hop in the routing policy to be referenced. 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:
Ste
p
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 not
configured.
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 single-hop echo detection for OSPF FRR to detect primary link failures.
To configure BFD for OSPF FRR:
Ste
p
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.
3. Enter interface view.
interface interface-type interface-number N/A