Configuring Ospf Gr Restarter - HP 5500 EI series Configuration Manual

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Two routers are required to complete a GR process. The following are router roles in a GR process.
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 has the following types:
IETF GR—Uses Opaque LSAs to implement GR.
Non-IETF 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 OSPF GR restarter

You can configure the IETF or non IETF OSPF GR restarter.
Configuring the IETF OSPF GR restarter
Step
1.
Enter system view.
2.
Enable OSPF and enter its
view.
3.
Enable opaque LSA reception
and advertisement capability.
4.
Enable the IETF GR.
5.
(Optional.) Configure GR
interval.
Configuring the non-IETF OSPF GR restarter
Step
1.
Enter system view.
Enable OSPF and enter its
2.
view.
3.
Enable the link-local signaling
capability.
4.
Enable the out-of-band
re-synchronization capability.
5.
Enable non-IETF GR.
6.
(Optional.) Configure GR
interval.
Command
system-view
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
opaque-capability enable
graceful-restart ietf [ global |
planned-only ] *
graceful-restart interval
interval-value
Command
system-view
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
enable link-local-signaling
enable
out-of-band-resynchronization
graceful-restart [ nonstandard ]
[ global | planned-only ] *
graceful-restart interval
interval-value
89
Remarks
N/A
N/A
By default, opaque LSA reception
and advertisement capability is
enabled.
By default, the IETF GR capability is
disabled.
The default setting is 120 seconds.
Remarks
N/A
N/A
By default, the link-local signaling
capability is disabled.
By default, the out-of-band
re-synchronization capability is
disabled.
By default, non-IETF GR capability
is disabled.
The default setting is 120 seconds.

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