Dell S4048-ON, Руководство по настройке

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Internet Address 10.1.1.23/24, Area 2.2.2.2
Process ID 34, Router ID 10.1.2.100, Network Type LOOPBACK, Cost: 1
Enabling Fast-Convergence
The fast-convergence CLI sets the minimum origination and arrival LSA parameters to zero (0), allowing rapid route calculation.
When you disable fast-convergence, origination and arrival LSA parameters are set to 5 seconds and 1 second, respectively.
Setting the convergence parameter (from 1 to 4) indicates the actual convergence level. Each convergence setting adjusts the LSA
parameters to zero, but the
fast-convergence
parameter setting allows for even finer tuning of the convergence speed. The
higher the number, the faster the convergence.
To enable or disable fast-convergence, use the following command.
• Enable OSPF fast-convergence and specify the convergence level.
CONFIG-ROUTEROSPF- id mode
fast-convergence { number }
The parameter range is from 1 to 4.
The higher the number, the faster the convergence.
When disabled, the parameter is set at 0.
NOTE: A higher convergence level can result in occasional loss of OSPF adjacency. Generally, convergence level 1
meets most convergence requirements. Only select higher convergence levels following consultation with Dell
Technical Support.
Examples of the
fast-converge
Command
In the following examples,
Convergence Level
shows the fast-converge parameter setting and
Min LSA origination
shows the LSA parameters (shown in bold).
Dell(conf-router_ospf-1)#fast-converge 2
Dell(conf-router_ospf-1)#ex
Dell(conf)#ex
Dell#show ip ospf 1
Routing Process ospf 1 with ID 192.168.67.2
Supports only single TOS (TOS0) routes
SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
Convergence Level 2
Min LSA origination 0 secs, Min LSA arrival 0 secs
Number of area in this router is 0, normal 0 stub 0 nssa 0
Dell#
The following examples shows how to disable fast-convergence.
Dell#(conf-router_ospf-1)#no fast-converge
Dell#(conf-router_ospf-1)#ex
Dell#(conf)#ex
Dell##show ip ospf 1
Routing Process ospf 1 with ID 192.168.67.2
Supports only single TOS (TOS0) routes
SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
Convergence Level 0
Min LSA origination 5 secs, Min LSA arrival 1 secs
Number of area in this router is 0, normal 0 stub 0 nssa 0
Dell#
Changing OSPFv2 Parameters on Interfaces
In Dell Networking OS, you can modify the OSPF settings on the interfaces.
Some interface parameter values must be consistent across all interfaces to avoid routing errors. For example, set the same time
interval for the hello packets on all routers in the OSPF network to prevent misconfiguration of OSPF neighbors.
Open Shortest Path First (OSPFv2 and OSPFv3)
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