R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

412
Ste
p
Command Remarks
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:
Ste
p
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
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.
Configuring OSPFv3 NSR
The following matrix shows the feature and hardware compatibility:
Hardware OSPFv3 NSR feature com
p
atibilit
y
MSR2000 No
MSR3000 No
MSR4000 Yes
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.
NSR does not require the cooperation of neighboring devices to recover routing information, and is used
more often than GR.
IMPORTANT:
A
device that has OSPFv3 NSR enabled cannot act as GR restarter.
To enable OSPFv3 NSR:
Ste
p
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 OSPFv3 NSR.
non-stop-routing By default, OSPFv3 NSR is disabled.