Transmit Delay is 1 sec, State DOWN, Priority 1Designated Router (ID) 10.1.2.100, Interface address 0.0.0.0Backup Designated Router (ID) 0.0.0.0, Interface address 0.0.0.0Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5Hello due in 13:39:46Neighbor Count is 0, Adjacent neighbor count is 0TenGigabitEthernet 2/1 is up, line protocol is downInternet Address 10.1.3.100/24, Area 2.2.2.2Process ID 34, Router ID 10.1.2.100, Network Type BROADCAST, Cost: 10Transmit Delay is 1 sec, State DR, Priority 1Designated Router (ID) 10.1.2.100, Interface address 10.1.3.100Backup Designated Router (ID) 0.0.0.0, Interface address 0.0.0.0Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5No Hellos (Passive interface)Neighbor Count is 0, Adjacent neighbor count is 0Loopback 45 is up, line protocol is upInternet Address 10.1.1.23/24, Area 2.2.2.2Process ID 34, Router ID 10.1.2.100, Network Type LOOPBACK, Cost: 1Enabling Fast-ConvergenceThe 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 LSAparameters to zero, but the fast-convergence parameter setting allows for even finer tuning of the convergence speed. The higherthe 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 modefast-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 meetsmost convergence requirements. Only select higher convergence levels following consultation with Dell TechnicalSupport.Examples of the fast-converge CommandIn the following examples, Convergence Level shows the fast-converge parameter setting and Min LSA origination shows theLSA parameters (shown in bold).Dell(conf-router_ospf-1)#fast-converge 2Dell(conf-router_ospf-1)#exDell(conf)#exDell#show ip ospf 1Routing Process ospf 1 with ID 192.168.67.2Supports only single TOS (TOS0) routesSPF schedule delay 5 secs, Hold time between two SPFs 10 secsConvergence Level 2Min LSA origination 0 secs, Min LSA arrival 0 secsNumber of area in this router is 0, normal 0 stub 0 nssa 0Dell#Open Shortest Path First (OSPFv2 and OSPFv3) 635
