Cisco Single Area OSPF Configuration

single area ospf

OSPF Cisco Configuration

OSPF (Open Shortest Path First) protocol is a well-know routing protocol that is widely used today.To configure a netowork for OSPF properly there are some steps. For basic OSPF Configuration, the followin scenario will be a good example.

single area ospf configuration topology with packet tracer
 

Single Area OSPF Configuration Topology

Cisco OSPF Configuration Steps

First of all, we will configure the routers’ interfaces. After that we will configure OSPF as our Routing Protocol. Here we assume that all the interfaces including loopback interfaces, their speed, duplex and descriptions have been configured.

To configure OSPF, follow the below steps:

1. Enabling OSPF Process

In the router A, we will enable OSPF Process, with Process Number “1“.

A(config)# router ospf 1
A(config-router)#

2. Adding OSPF Networks

After enabling OSPF process on our Cisco Router A, then, we will add our networks that will be in OSPF network with their wildcard masks.

A(config-router)# network 10.10.10.0 0.0.0.255 area 0
A(config-router)# network 10.10.11.0 0.0.0.255 area 0
A(config-router)# end

3. Saving OSPF Config

A # copy running-config startup-config

4. OSPF Config on Router B

We will configure Router B like Router A. We will enable OSPF and then add OSPF Networks.

B(config)# router ospf 1
B(config-router)# network 10.10.11.0 0.0.0.255 area 0
B(config-router)# network 10.10.12.0 0.0.0.255 area 0
B(config-router)# exit
B # copy running-config startup-config

5. OSPF Config on Router C

We will configure Router C like Router A. We will enable OSPF and then add OSPF Networks.

C(config)# router ospf 1
C(config-router)# network 10.10.10.0 0.0.0.255 area 0
C(config-router)# network 10.10.12.0 0.0.0.255 area 0
C(config-router)# network 10.10.13.0 0.0.0.255 area 0
C(config-router)# end
C# copy running-config startup-config

You can download “Cisco Packet Tracer” in Tools section.

Lesson tags: ospf, routing
Back to: CCNA > OSPF

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