Configuring Ospf Gr; Configuring The Ospf Gr Restarter - HPE FlexNetwork HSR6800 Configuration Manual

Step
Enter OSPF view.
3.
Enable OSPF FRR to
4.
automatically calculate a
backup next hop.
Configuring OSPF FRR to designate a backup next hop with a routing policy
Before configuring this task, you need to 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:
Step
Enter system view.
1.
Configure the source
2.
address of echo packets.
Enter OSPF view.
3.
Enable OSPF FRR to
4.
designate a backup next hop
by using a routing policy.

Configuring OSPF GR

GR ensures the continuity of packet forwarding when a routing protocol restarts, an active/standby
MPU switchover occurs in standalone mode, or a global active/standby MPU switchover occurs in
IRF mode.
•
GR restarter—Graceful restarting router. It must have GR capability.
•
GR helper—A neighbor of the GR restarter. It helps the GR restarter to complete the GR
process.
OSPF GR involves:
•
IETF standard GR—Uses Opaque LSAs to implement GR.
•
Non IETF standard GR—Uses link local signaling (LLS) to advertise GR capability and uses
out of band synchronization to synchronize the LSDB.
A device can act as a GR restarter and GR helper at the same time.

Configuring the OSPF GR restarter

You can configure the IETF standard or non IETF standard OSPF GR restarter.
IMPORTANT:
Do not configure OSPF NSR on a device acting as GR restarter.
Command
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
fast-reroute auto [ abr-only ]
Command
system-view
bfd echo-source-ip ip-address
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
fast-reroute route-policy
route-policy-name
83
Remarks
N/A
Not configured by default.
If abr-only is specified, the route to
the ABR is selected as the backup
path.
Remarks
N/A
Not configured by default.
N/A
Not configured by default.