Graceful-Restart Mode - Dell Z9500 Command Reference Manual

Table of Contents

graceful-restart mode

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

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

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

planned-only

OSPFv3 graceful restart supports both planned and unplanned failures.

ROUTER OSPFv3

This guide is platform-specific. For command information about other platforms,

refer to the relevant Dell Networking OS Command Line Reference Guide.

The following is a list of the Dell Networking OS version history for this command.

OSPFv3 graceful restart supports planned-only and/or unplanned-only restarts.

The default is support for both planned and unplanned restarts.

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.

Open Shortest Path First (OSPFv2 and OSPFv3)

(OPTIONAL) Enter the keywords planned-only to indicate

graceful restart is supported in a planned restart condition

(OPTIONAL) Enter the keywords unplanned-only to

indicate graceful restart is supported in an unplanned restart

condition only.

Introduced on the Z9500.

Introduced on the S4810 and Z9000.

Introduced on the E-Series TeraScale.

Introduced on the S4820T.

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.