Enable Ospfv3 Graceful Restart - Dell Force10 C150 Configuration Manual

Enable OSPFv3 graceful restart

Graceful Restart for OSPFv3 is supported only on platform
for more information on the feature.
By default, OSPFv3 graceful restart is disabled and functions only in a helper role to help restarting
neighbor routers in their graceful restarts when it receives a Grace LSA.
To enable OSPFv3 graceful restart, you must enter the
OSPFv3 configuration mode and then configure a grace period using the
command. The grace period is the length of time that OSPFv3 neighbors continue to advertise the
restarting router as though it is fully adjacent. When graceful restart is enabled (restarting role), an OSPFv3
restarting expects its OSPFv3 neighbors to help when it restarts by not advertising the broken link.
When you enable the helper-reject role on an interface with the
command, you reconfigure OSPFv3 graceful restart to function in a "restarting-only" role. OSPFv3 does
not participate in the graceful restart of a neighbor. (Note that you enter the
helper-reject
command in Interface configuration mode.)
Command Syntax
graceful-restart
grace-period seconds
ipv6 ospf graceful-restart
helper-reject
graceful-restart mode
[planned-only |
unplanned-only]
To disable OSPFv3 graceful restart when it is enabled, enter the following command:
Command Syntax
no graceful-restart grace-period
Command Mode Usage
CONF-IPV6-ROUTE Enable OSPFv3 graceful restart globally by setting the grace
R-OSPF period (in seconds). Valid values are from 40 to 1800 seconds.
INTERFACE Configure an OSPFv3 interface to not act upon the Grace LSAs
that it receives from a restarting OSPFv3 neighbor.
CONF-IPV6-ROUTE Specify the operating mode and type of events that trigger a
R-OSPF graceful restart:
•
•
Default: Both planned and unplanned restarts trigger an OSPFv3
graceful restart. Selecting one or the other mode restricts OSPFv3
to the single selected mode.
Command Mode
CONF-IPV6-ROUTE
R-OSPF
e
t . Refer to
ipv6 router ospf process-id
ipv6 ospf graceful-restart helper-reject
Planned-only. The OSPFv3 router supports graceful restart
only for planned restarts. A planned restart is when you
manually enter a redundancy force-failover rpm command to
force the primary RPM over to the secondary RPM. During a
planned restart, OSPFv3 sends out a Grace LSA before the
system switches over to the secondary RPM. OSPFv3 is
notified that a planned restart is happening.
Unplanned-only. The OSPFv3 router supports graceful-restart
only for unplanned restarts. During an unplanned restart,
OSPFv3 sends out a Grace LSA once the secondary RPM
comes online.
Usage
Disable OSPFv3 graceful-restart.
Open Shortest Path First (OSPFv2 and OSPFv3) | 731
Graceful Restart on page 700
command to enter
graceful-restart grace-period
ipv6 ospf graceful-restart