Administrator Guide

Version Description
pre- 6.1.1.1 Introduced on the E-Series.
fast-convergence
This command sets the minimum LSA origination and arrival times to zero (0), allowing more rapid route
computation so that convergence takes less time.
Z9000
Syntax
fast-convergence {number}
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,
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
9.7(0.0) Introduced on the S6000-ON.
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.
Open Shortest Path First (OSPFv2 and OSPFv3)
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