`graceful-restart` (OSPFv2)

Enables the OSPF Graceful Restart (GR) capability.

Syntax

graceful-restart [ helper-disable | restart-time seconds ]

no graceful-restart

Command Default

Graceful restart and graceful restart helper capabilities are enabled.

Parameters

helper-disable: Disables the GR helper capability.
restart-time: Specifies the maximum restart wait time, in seconds, advertised to neighbors. The default value is 120 seconds. The configurable range of values is from 10 through 1800 seconds.

Modes

OSPF router configuration mode

OSPF router VRF configuration mode

Usage Guidelines

Note: GR is not supported for standalone devices.

Use no graceful-restart helper-disable to re-enable the GR helper capability.

The no form of the command disables the graceful restart capability.

Examples

The following example disables the GR helper capability.

device# configure terminal
device(config)# router ospf
device(config-ospf-router)# graceful-restart helper-disable

The following example re-enables the GR helper capability.

device# configure terminal
device(config)# router ospf
device(config-ospf-router)# no graceful-restart helper-disable

The following example re-enables the GR capability.

device# configure terminal
device(config)# router ospf
device(config-ospf-router)# graceful-restart

The following example re-enables the GR capability and changes the maximum restart wait time from the default value to 240 seconds.

device# configure terminal
device(config)# router ospf
device(config-ospf-router)# graceful-restart restart-time 240

History

graceful-restart (OSPFv2)