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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.
Assigning a Router ID
In CONFIGURATION ROUTER OSPF mode, assign the router ID.
The router ID is not required to be the router’s IP address. However, Dell EMC Networking recommends using the IP address as
the router ID for easier management and troubleshooting. Optional process-id commands are also described.
● Assign the router ID for the OSPFv2 process.
CONFIG-ROUTER-OSPF-id mode
router-id ip address
● Disable OSPF.
CONFIGURATION mode
no router ospf process-id
● Reset the OSPFv2 process.
EXEC Privilege mode
clear ip ospf process-id
● View the current OSPFv2 status.
EXEC mode
show ip ospf process-id
DellEMC#show ip ospf 55555
Routing Process ospf 55555 with ID 10.10.10.10
Supports only single TOS (TOS0) routes
SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
Number of area in this router is 0, normal 0 stub 0 nssa 0
DellEMC#
Assigning an OSPFv2 Area
After you enable OSPFv2, assign the interface to an OSPF area. Set up OSPF areas and enable OSPFv2 on an interface with
the network command.
You must have at least one AS area: Area 0. This is the backbone area. If your OSPF network contains more than one area,
configure a backbone area (Area ID 0.0.0.0). Any area besides Area 0 can have any number ID assigned to it.
Open Shortest Path First (OSPFv2 and OSPFv3)
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