Install Guide

Generally, convergence level 1 meets most convergence requirements. Higher convergence levels should
only be selected following consultation with Dell EMC Networking technical support.
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.
S4048–ON
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
EMC Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
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.
1114 Open Shortest Path First (OSPFv2 and OSPFv3)