# Cisco IOS OSPF Protocol

#### Network Topology

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/5tsimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/5tsimage.png)

#### Router0 Configuration Commands

Router0>enable  
Router0#configure terminal  
Router0(config)#interface serial 0/0/0  
Router0(config-if)#ip address 172.16.1.2 255.255.255.248  
Router0(config-if)#no shutdown  
Router0(config-if)#interface gigabitEthernet 0/0  
Router0(config-if)#ip address 192.168.10.1 255.255.255.0  
Router0(config-if)#no shutdown  
Router0(config-if)#exit  
Router0(config)#router ospf 1  
Router0(config-router)#network 192.168.10.0 0.0.0.255 area 0  
Router0(config-router)#network 172.16.1.0 0.0.0.7 area 0  
Router0(config-router)#end

#### Router1 Configuration Commands

Router1>enable  
Router1#configure terminal  
Router1(config)#interface serial 0/0/0  
Router1(config-if)#ip address 172.16.1.1 255.255.255.248  
Router1(config-if)#no shutdown  
Router1(config)#interface serial 0/0/1  
Router1(config-if)#ip address 172.16.2.1 255.255.255.248  
Router1(config-if)#no shutdown  
Router1(config-if)#interface gigabitEthernet 0/0  
Router1(config-if)#ip address 192.168.20.1 255.255.255.0  
Router1(config-if)#no shutdown  
Router1(config-if)#exit  
Router1(config)#router ospf 1  
Router1(config-router)#network 192.168.20.0 0.0.0.255 area 0  
Router1(config-router)#network 172.16.1.0 0.0.0.7 area 0  
Router1(config-router)#network 172.16.2.0 0.0.0.7 area 0  
Router1(config-router)#end

#### Router2 Configuration Commands

Router2>enable  
Router2#configure terminal  
Router2(config)#interface serial 0/0/0  
Router2(config-if)#ip address 172.16.2.2 255.255.255.248  
Router2(config-if)#no shutdown  
Router2(config-if)#interface gigabitEthernet 0/0  
Router2(config-if)#ip address 192.168.30.1 255.255.255.0  
Router2(config-if)#no shutdown  
Router2(config-if)#exit  
Router2(config)#router ospf 1  
Router2(config-router)#network 192.168.30.0 0.0.0.255 area 0  
Router2(config-router)#network 172.16.2.0 0.0.0.7 area 0  
Router2(config-router)#end

#### PC Configurations

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/H7Qimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/H7Qimage.png)

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/PNjimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/PNjimage.png)

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/7Ffimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/7Ffimage.png)

#### Verify OSPF Configuration

Router0#show ip route

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/rCnimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/rCnimage.png)

Router1#show ip route

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/wJOimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/wJOimage.png)

Router2#show ip route

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/Pwzimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/Pwzimage.png)

Router0# show ip ospf neighbor

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/GBCimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/GBCimage.png)

Router1#show ospf neighbor

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/ihaimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/ihaimage.png)

Router2#show ip ospf neighbor

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/fTVimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/fTVimage.png)

Router0#show ip ospf

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/xtyimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/xtyimage.png)

Router1#show ip ospf

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/yNoimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/yNoimage.png)

Router2#show ip ospf

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/Egdimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/Egdimage.png)

#### Ping and Tracert Checks

[![image.png](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/scaled-1680-/TAAimage.png)](https://bookstack.taylorhome.run/uploads/images/gallery/2023-01/TAAimage.png)

#### Cisco Packet Tracer File

[net15 ospf.pkt](https://bookstack.taylorhome.run/attachments/10)