Enabling The Logging Of Neighbor State Changes; Configuring Ospfv3 Gr; Configuring Gr Restarter; Configuring Gr Helper - HPE 5800 Series Configuration Manual

Enabling the logging of neighbor state changes

Step
Enter system view.
1.
Enter OSPFv3 view.
2.
Enable the logging of
3.
neighbor state changes.

Configuring OSPFv3 GR

Graceful Restart ensures the continuity of packet forwarding when a routing protocol restarts or an
active/standby switchover occurs:
•
GR Restarter—Graceful restarting router. It must be Graceful Restart capable.
•
GR Helper—The neighbor of the GR Restarter. It helps the GR Restarter to complete the GR
process.
To prevent service interruption after a master/backup switchover, a GR Restarter running OSPFv3
must complete the following tasks:
•
Keep the GR Restarter forwarding entries stable during reboot.
•
Establish all adjacencies and obtain complete topology information after reboot.
After the active/standby switchover, the GR Restarter sends a Grace-LSA to tell its neighbors that it
performs a GR. Upon receiving the Grace-LSA, the neighbors with the GR Helper capability enter
the helper mode (and are called "GR Helpers"). Then, the GR Restarter retrieves its adjacencies and
LSDB with the help of the GR Helpers.
IMPORTANT:
You cannot configure OSPFv3 GR after configuring OSPFv3 virtual links, because they are not
supported at the same time.

Configuring GR Restarter

Step
Enter system view.
1.
Enter OSPFv3 view.
2.
Enable the GR
3.
capability.
Configure the GR
4.
interval.

Configuring GR Helper

Command
system-view
ospfv3 [ process-id ]
log-peer-change
Command
system-view
ospfv3 [ process-id ]
graceful-restart enable
graceful-restart interval
interval-value
280
Remarks
N/A
N/A
Enabled by default.
Remarks
N/A
N/A
Disabled by default.
Optional.
120 seconds by default.