Cisco Single Area OSPF Configuration

single area ospf

Cisco Single Area OSPF 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
First of all, we will configure the routers’ interfaces. After that we will configure the 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) In the router A, enable OSPF with process number 1. Then, give the ospf interface addresses with their wildcard masks.

A(config)# router ospf 1
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
A # copy running-config startup-config

2) In the router B, enable OSPF with process number 1. Then, give the ospf interface addresses with their wildcard masks.

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

3) In the router C, enable OSPF with process number 1. Then, give the ospf interface addresses with their wildcard masks.

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

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For this post, it is over. For more information about OSPF, check the below posts ;)

Routing with OSPF – Part 1
Routing with OSPF – Part 2 (OSPF Adjacency)
Routing with OSPF – Part 3 (OSPF Packet Types)
Routing with OSPF – Part 4 (OSPF LSA Types)
Routing with OSPF – Part 5 (OSPF Area Types)
Routing with OSPF – Part 6 (OSPF Network Types, Virtual Links, Summarization)

You can download “Packet Tracer” in Tools section.

You can check some of the other Packet Tracer Examples below:

Common Cisco Router Configuration Example on Packet Tracer
Router DHCP Configuration Example on Packet Tracer
VTP Configuration Example on Packet Tracer
VLAN Configuration Example on Packet Tracer
STP Configuration Example on Packet Tracer
BGP Configuration Example on Packet Tracer
Port Security Configuration Example on Packet Tracer
RIP Configuration Example on Packet Tracer
CDP Configuration Example on Packet Tracer
OSPF Single Area Configuration on Cisco
OSPF Area Types Example on Packet Tracer (Standard and Backbone Areas)
OSPF External Routes Example on Packet Tracer
OSPF Area Types Example on Packet Tracer (Stub, NSSA, Totally Stubby, Totally NSSA Areas)

3 Responses to “Cisco Single Area OSPF Configuration”


  • Abdoulaye Thiam / Reply

    i want to contact you for the network cisco et juniper.

    i am working for IBM

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  • Aribeth / Reply

    Thank you!! I’m learning how to configure ospf and I found this very usefull

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