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fast-convergence
c e s
This command sets the minimum LSA origination and arrival times to zero (0), allowing more rapid
route computation so that convergence takes less time.
Syntax
fast-convergence {number}
To cancel fast-convergence, enter no fast convergence.
Parameters
number
Defaults
None.
Command Modes
ROUTER OSPF
Command
Version 7.8.1.0
History
Usage
The higher this parameter is set, the faster OSPF converge takes place. Note that the faster the
Information
convergence, the more frequent the route calculations and updates. This will impact 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 Force10 technical support.
flood-2328
c e s
Enable RFC-2328 flooding behavior.
Syntax
flood-2328
To disable, use the no flood-2328 command.
Defaults
Disabled
Command Modes
ROUTER OSPF
Command
Version 7.8.1.0
History
Version 7.6.1.0
Version 7.5.1.0
Usage
In OSPF, flooding is the most resource-consuming task. The flooding algorithm, described in
Information
RFC-2328, requires that OSPF flood LSAs (Link State Advertisements) on all interfaces, as governed
by LSA's flooding scope (see Section 13 of the RFC). When multiple direct links connect two routers,
the RFC-2328 flooding algorithm generates significant redundant information across all links.
By default, FTOS implements an enhanced flooding procedure that dynamically and intelligently
determines when to optimize flooding. Whenever possible, the OSPF task attempts to reduce flooding
overhead by selectively flooding on a subset of the interfaces between two routers.
Enter the convergence level desired. The higher this parameter is set, the
faster OSPF converge takes place.
Range: 1-4
Introduced on all platforms.
Introduced support for Multi-Process OSPF.
Introduced on S-Series
Introduced on C-Series and E-Series
Open Shortest Path First (OSPFv2 and OSPFv3) | 1019
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