Cisco Single Area OSPF Configuration

OSPF Cisco Configuration

  OSPF (Open Shortest Path First) protocol is a well-known routing protocol that is widely used today. To configure a network for OSPF properly there are some steps. For basic OSPF Cisco Configuration, the following scenario will be a good example.   Single Area OSPF Configuration Topology

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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 do OSPF Cisco Configuration, follow the below steps:  

Enabling OSPF Process

  In the router A, we will enable OSPF Process, with Process Number “1“. A(config)# router ospf 1 A(config-router)#  

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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  

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Saving OSPF Config

  A # copy running-config startup-config  

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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  

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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   [sc name=”ContentRMessage”] You can download “Cisco Packet Tracer” in Tools section.