Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.112.1P1 - Page 619

• Troubleshooting OSPFv2 1 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 holdtime NOTE: To set the interval time between the reception of topology changes and calculation of SPF in milli seconds, use the timers spf delay holdtime msec command. Example Dell# Dell#conf Dell(conf)#router ospf 1 Dell(conf-router_ospf-1)#timer spf 2 5 msec Dell(conf-router_ospf-1)# Dell(conf-router_ospf-1)#show config ! router ospf 1 timers spf 2 5 msec Dell(conf-router_ospf-1)# Dell(conf-router_ospf-1)#end Dell# For a complete list of the OSPF commands, refer to the OSPF section in the Dell Networking OS Command Line Reference Guide document. Enabling OSPFv2 To enable Layer 3 routing, assign an IP address to an interface (physical or Loopback). By default, OSPF, similar to all routing protocols, is disabled. 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 you create four OSPFv2 process IDs, you must have four interfaces with Layer 3 enabled. 1 Assign an IP address to an interface. CONFIG-INTERFACE mode ip address ip-address mask The format is A.B.C.D/M. If you are using a Loopback interface, refer to Loopback Interfaces. 2 Enable the interface. CONFIG-INTERFACE mode no shutdown 3 Return to CONFIGURATION mode to enable the OSPFv2 process globally. CONFIGURATION mode router 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 this OSPF instance are later tied to the VRF instance. The range is from 0 to 65535. Open Shortest Path First (OSPFv2 and OSPFv3) 619