Reference Guide

Open Shortest Path First (OSPFv2 and OSPFv3) | 1069
graceful-restart mode
e
t
Specify the type of events that trigger an OSPFv3 graceful restart.
Syntax
graceful-restart mode [planned-only | unplanned-only]
To disable the configured graceful-restart mode, enter no graceful-restart mode.
Parameters
Defaults
OSPFv3 graceful restart supports both planned and unplanned failures.
Command Modes
ROUTER OSPFv3
Command
History
Usage
Information
OSPFv3 graceful restart supports planned-only and/or unplanned-only restarts. The default is support
for both planned and unplanned restarts.
• A planned restart occurs when you enter the redundancy force-failover rpm command to force
the primary RPM to switch to the backup RPM. During a planned restart, OSPF sends out a
Type-11 Grace LSA before the system switches over to the backup RPM.
• An unplanned restart occurs when an unplanned event causes the active RPM to switch to the
backup RPM, such as when an active process crashes, the active RPM is removed, or a power
failure happens. During an unplanned restart, OSPF sends out a Grace LSA when the backup RPM
comes online.
By default, both planned and unplanned restarts trigger an OSPFv3 graceful restart. Selecting one or
the other mode restricts OSPFv3 to the single selected mode.
ipv6 ospf area
c e
Enable IPv6 OSPF on an interface.
Syntax
ipv6 ospf process-id area area-id
To disable OSPFv6 routing for an interface, use the no ipv6 ospf process-id area area-id
command.
Parameters
Defaults
No default values or behavior
Command Modes
INTERFACE
planned-only (OPTIONAL) Enter the keywords planned-only to indicate graceful
restart is supported in a planned restart condition only.
unplanned-only (OPTIONAL) Enter the keywords unplanned-only to indicate graceful
restart is supported in an unplanned restart condition only.
Version 8.4.2.2 Introduced on E-Series TeraScale.
process-id
Enter the process identification number.
area area-id
Specify the OSPF area.
Range: 0 to 65535