Administrator Guide

Defaults None.
Command Modes ROUTER OSPF
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
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 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
Species 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.
S3048–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 species the duration of the restart process before OSPF
terminates the process. The range is from 40 to 1800 seconds.
Defaults Not Congured
Command Modes ROUTER OSPF
1086 Open Shortest Path First (OSPFv2 and OSPFv3)