Administrator Guide

Version Description
9.2(1.0) Introduced on the Z9500.
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 all platforms.
Usage Information
The higher this parameter is set, the faster OSPF converge takes place.
NOTE: The faster the convergence, the more frequent the route calculations and updates. This
behavior impacts CPU utilization and may impact adjacency stability in larger topologies.
Generally, convergence level 1 meets most convergence requirements. Higher convergence levels should only be
selected following consultation with Dell 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.
C9000 Series
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, 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.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
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.
6.1.1.1 Introduced on the E-Series.
Open Shortest Path First (OSPFv2 and OSPFv3) 1091