• Troubleshooting OSPFv21 Configure a physical interface. Assign an IP address, physical or Loopback, to the interface to enable Layer 3 routing.2 Enable OSPF globally. Assign network area and neighbors.3 Add interfaces or configure other attributes.4 Set the time interval between when the switch receives a topology change and starts a shortest path first (SPF) calculation.Use timers spf delay holdtimeNOTE: To set the interval time between the reception of topology changes and calculation of SPF in milli seconds, usethe timers spf delay holdtime msec command.ExampleDell#Dell#confDell(conf)#router ospf 1Dell(conf-router_ospf-1)#timer spf 2 5 msecDell(conf-router_ospf-1)#Dell(conf-router_ospf-1)#show config!router ospf 1timers spf 2 5 msecDell(conf-router_ospf-1)#Dell(conf-router_ospf-1)#endDell#For a complete list of the OSPF commands, refer to the OSPF section in the Dell Networking OS Command Line Reference Guidedocument.Enabling OSPFv2To enable Layer 3 routing, assign an IP address to an interface (physical or Loopback). By default, OSPF, similar to all routing protocols, isdisabled.You must configure at least one interface for Layer 3 before enabling OSPFv2 globally.If implementing multi-process OSPF, create an equal number of Layer 3 enabled interfaces and OSPF process IDs. For example, if youcreate four OSPFv2 process IDs, you must have four interfaces with Layer 3 enabled.1 Assign an IP address to an interface.CONFIG-INTERFACE modeip address ip-address maskThe format is A.B.C.D/M.If you are using a Loopback interface, refer to Loopback Interfaces.2 Enable the interface.CONFIG-INTERFACE modeno shutdown3 Return to CONFIGURATION mode to enable the OSPFv2 process globally.CONFIGURATION moderouter ospf process-id [vrf {vrf name}]• vrf name: enter the keyword VRF and the instance name to tie the OSPF instance to the VRF. All network commands under thisOSPF instance are later tied to the VRF instance.The range is from 0 to 65535.630 Open Shortest Path First (OSPFv2 and OSPFv3)
