CLI Guide

To cancel fast-convergence, use the no fast convergence command.
Parameters
number Enter the convergence level desired. The higher this
parameter is set, the faster OSPF converge takes place. The
range is from 1 to 4.
Defaults None.
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(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
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.
1210
Open Shortest Path First (OSPFv2 and OSPFv3)