Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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graceful-restart mode

Specify the type of events that trigger an OSPFv3 graceful restart.

Syntax

graceful-restart mode {planned-only | unplanned-only}

To disable graceful restart mode, enter no graceful-restart mode.

Parameters

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.

Defaults

OSPFv3 graceful restart supports both planned and unplanned failures.

Command Modes

ROUTER OSPFv3

Supported Modes

Full—Switch

Command History

Version	Description
9.9(0.0)	Introduced on the FN IOM.
9.2(0.0)	Introduced on the MXL 10/40GbE Switch IO Module.

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.