Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

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.

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.
   The OSPF process ID is the identifying number assigned to the OSPF process. The router ID is the IP address associated with the OSPF process.
   After the OSPF process and the VRF are tied together, the OSPF process ID cannot be used again in the system.
   If you try to enter an OSPF process ID, or if you try to enable more OSPF processes than available Layer 3 interfaces, prior to assigning an IP address to an interface and setting the no shutdown command, the following message displays:

   DellEMC(conf)#router ospf 1
   % Error: No router ID available.