Enable Inverse Mask; Fast-Convergence - Dell Force10 S4810P Reference Manual

Usage The distribute-list out command applies to routes being redistributed by
Information autonomous system boundary routers (ASBRs) into OSPF. It can be applied to external type 2
and external type 1 routes, but not to intra-area and inter-area routes.

enable inverse mask

By default, FTOS allows you to input the OSPF network command with a net-mask. This command provides a choice
between inverse-mask or net-mask (the default).
C-Series, E-Series, Z-Series
Syntax enable inverse mask
To return to the default net-mask, use the no enable inverse mask command.
Defaults net-mask
Command Modes CONFIGURATION
Command History
Version 8.3.11.1
Version 7.5.1.0
pre-Version
6.1.1.1

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.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax fast-convergence {number}
To cancel fast-convergence, use the no fast convergence command.
Parameters
number
Defaults none.
Command Modes ROUTER OSPF
Command History
Version 8.3.11.1
Version 8.3.7.0
Version 7.8.1.0
Usage
The higher this parameter is set, the faster OSPF converge takes place.
Information
1158
Introduced on the Z9000.
Introduced on the C-Series.
Introduced on the E-Series.
Enter the convergence level desired. The higher this parameter is set,
the faster OSPF converge takes place. The range is 1 to 4.
Introduced on the Z9000.
Introduced on the S4810.
Introduced on all platforms.
NOTE: The faster the convergence, the more frequent the route calculations and updates.
This impacts CPU utilization and may impact adjacency stability in larger topologies.