H3C Technologies H3C SR8800 - Manual (Page 118)

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• 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 router 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.
Configuring the IETF standard OSPF GR Restarter
To configure the standard IETF OSPF GR Restarter:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable OSPF and enter its
view.
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
N/A
3. Enable opaque LSA
advertisement capability.
opaque-capability enable Disabled by default
4. Enable the IETF standard
Graceful Restart capability.
graceful-restart ietf Disabled by default
5. Configure the Graceful Restart
interval.
graceful-restart interval timer
Optional
120 seconds by default
Configuring the non-IETF standard OSPF GR Restarter
To configure non-IETF standard OSPF GR Restarter:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable OSPF and enter its
view.
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
N/A
3. Enable the link-local signaling
capability.
enable link-local-signaling Disabled by default
4. Enable the out-of-band
re-synchronization capability.
enable
out-of-band-resynchronization
Disabled by default
5. Enable non IETF standard
Graceful Restart capability for
OSPF.
graceful-restart [ nonstandard ] Disabled by default
6. Configure Graceful Restart
interval for OSPF.
graceful-restart interval timer
Optional
120 seconds by default
Configuring the OSPF GR Helper
You can configure the IETF standard or non IETF standard OSPF GR Helper.