3Com Switch 8800 Advanced Software V5 Configuration Guide

798 CHAPTER 55: GR CONFIGURATION
Configuring OSPF-based GR Helper
Follow these steps to configure OSPF-based GR Helper:
Restarting OSPF Graceful Restart
You can perform the following configuration on a routing switch to restart the GR
process for OSPF protocol, but ensure that the routing switch has been enabled
with the following capabilities first:
■ LLS (link local signaling)
■ OOB (out of band resynchronization)
■ Opaque LSA
Following the step to restart the OSPF GR process:
To do... Use the command... Remarks
Enter system view system-view -
Enable OSPF and enter its
view
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
Required
Disabled by default
Enable opaque LSA capability opaque-capability enable Required
Disabled by default.
Enable the use of link-local
signaling
enable link-local-signaling Required
Disabled by default
Enable out-of-band
resynchronization
enable
out-of-band-resynchroniza
tion
Required
Disabled by default
Enable GR for OSPF graceful-restart Required
Disabled by default
To do... Use the command... Remarks
Enter system view system-view -
Enable OSPF, and enter OSPF
view
ospf [ process-id | router-id
router-id | vpn-instance
instance-name ] *
Required
Disabled by default
Enable the use of link-local
signaling
enable link-local-signaling Required
Disabled by default
Enable out-of-band
resynchronization
enable
out-of-band-resynchroniza
tion
Required
Disabled by default
Configure for which OSPF
neighbors the current router
can serve as a GR Helper
graceful-restart help {
acl-number | prefix prefix-list
}
Optional
The router can server as a GR
Helper for any OSPF neighbor
by default.
To do... Use the command... Remarks
Restart OSPF Graceful Restart reset ospf [ process-id ]
process graceful-restart
Required
Available in user view