H3C Technologies H3C S5560 Series Switches - Manual (Page 398)

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IMPORTANT:
You cannot enable OSPFv3 NSR on a device that acts as GR restarter.
To configure GR restarter:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter OSPFv3 view.
ospfv3 [ process-id | vpn-instance
vpn-instance-name ] *
N/A
3. Enable the GR
capability. graceful-restart enable [ global |
planned-only ] * By default, OSPFv3 GR restarter
capability is disabled.
4. (Optional.) Configure
the GR interval. graceful-restart interval
interval-value By default, the GR interval is 120
seconds.
Configuring GR helper
You can configure the GR helper capability on a GR helper.
To configure GR helper:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter OSPFv3 view.
ospfv3 [ process-id | vpn-instance
vpn-instance-name ] *
N/A
3. Enable the GR helper
capability. graceful-restart helper enable
[ planned-only ] By default, the GR helper capability is
enabled.
4. Enable strict LSA
checking. graceful-restart helper
strict-lsa-checking By default, strict LSA checking is
disabled.
Triggering OSPFv3 GR
OSPFv3 GR is triggered by an active/standby switchover or when the following command is executed.
To trigger OSPFv3 GR, perform the following command in user view:
Task Command
Trigger OSPFv3 GR. reset ospfv3 [ process-id ] process graceful-restart
Configuring OSPFv3 NSR
Nonstop routing (NSR) backs up OSPFv3 link state information from the active process to the standby
process. After an active/standby switchover, NSR can complete link state recovery and route
regeneration without tearing down adjacencies or impacting forwarding services.