Operation Manual – IPv4 Routing
H3C S3610&S5510 Series Ethernet Switches
Chapter 3 OSPF Configuration
3-43
To do…
Use the command…
Remarks
Enable the use of
link-local signaling
enable link-local-signaling
Required
Disabled by default
Enable out-of-band
re-synchronization
enable
out-of-band-resynchronizat
ion
Required
Disabled by default
Enable non IETF
standard Graceful
Restart capability
for OSPF
graceful-restart
[
nonstandard
]
Optional
Disabled by default
Configure Graceful
Restart interval for
OSPF
graceful-restart interval
timer
Optional
120 seconds by default
Note:
z
A device configured with the
graceful-restart ietf
command can act as a GR
Restarter and GR Helper at the same time.
z
A device not configured with the
graceful-restart ietf
command can act as a GR
Helper only.
3.8.2 Configuring the OSPF GR Helper
Follow these steps to configure the OSPF GR Helper:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter OSPF view
ospf
[
process-id
|
router-id
router-id
|
vpn-instance
instance-name
] *
—
Enable OSPF link-local
signaling
enable link-local-signaling
Required
Disabled by default
Enable OSPF
out-of-band
resynchronization
enable
out-of-band-resynchronizat
ion
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.