Users Guide

graceful-restart grace-period
Specifies the time duration, in seconds, that the router’s neighbors continue to advertise the router as fully adjacent regardless of the
synchronization state during a graceful restart.
NOTE: This command enables OSPFv2 graceful restart globally by setting the grace period (in seconds) that an OSPFv2
router’s neighbors continues to advertise the router as adjacent during a graceful restart.
Syntax
graceful-restart grace-period seconds
To disable the grace period, use the no graceful-restart grace-period command.
Parameters
seconds Time duration, in seconds, that specifies the duration of the restart process before OSPF
terminates the process. The range is from 40 to 1800 seconds.
Defaults Not Configured
Command Modes ROUTER OSPF
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series. Added support for Multi-Process OSPF.
7.5.1.0 Introduced on the C-Series.
pre- 6.1.1.1 Introduced on the E-Series.
Usage Information The Helper mode is enabled by default on the device. To enable the restart mode also on the device, you must
configure the grace period using this command. After you enable restart mode the router advertises the neighbor
as fully adjacent during a restart.
graceful-restart helper-reject
Specify the OSPF router to not act as a helper during graceful restart.
Syntax
graceful-restart helper-reject ip-address
To return to default value, use the no graceful-restart helper-reject command.
Parameters
ip-address Enter the OSPF router-id, in IP address format, of the restart router that will not act as a
helper during graceful restart.
Defaults Not configured.
Command Modes ROUTER OSPF
Open Shortest Path First (OSPFv2 and OSPFv3) 917