OSPF Practice

Lab Diagram

172.16.1.0\24

172.16.3.0\24

172.16.2.0\24

209.168.1.0\30

192.168.2.0\24

192.168.3.0\24

Lab Objectives

  • Cable a network in accordance with the diagram given
  • Configure the hostname and interface IP addresses, or paste the initial configuration onto all devices
  • Explicitly set the router-id of R1 to 1.1.1.1
  • Configure R2's router-id (2.2.2.2) using a loopback interface
  • Change the router-id of R3 to 3.3.3.3 without using the router-id command, and ensure that it will always be set to this on start up
  • Enable OSPF on all interfaces
  • NOTE: R1's Fa0/0 interface should not be a part of the OSPF process at all
  • Adjacencies should not be formed on any ethernet interfaces, but their networks should still be advertised by OSPF

Initial Configuration

Show/Hide
R1R2R3
  • !Configuration generated by CCNAPractice.com
  • !
  • !
  • hostname R1
  • !
  • !
  • !
  • !
  • interface Serial0/0
  •  ip address 172.16.1.1 255.255.255.0
  •  clock rate 64000
  •  no shutdown
  • !
  • interface Serial0/1
  •  ip address 172.16.3.1 255.255.255.0
  •  no shutdown
  • !
  • interface FastEthernet0/0
  •  ip address 209.168.1.1 255.255.255.252
  •  no shutdown
  • !
  • !
  • line con 0
  • !
  • end
  •  
  • !Configuration generated by CCNAPractice.com
  • !
  • !
  • hostname R2
  • !
  • !
  • !
  • !
  • interface Serial0/0
  •  ip address 172.16.2.1 255.255.255.0
  •  clock rate 64000
  •  no shutdown
  • !
  • interface Serial0/1
  •  ip address 172.16.1.2 255.255.255.0
  •  no shutdown
  • !
  • interface FastEthernet0/0
  •  ip address 192.168.2.1 255.255.255.0
  •  no shutdown
  • !
  • !
  • line con 0
  • !
  • end
  •  
  • !Configuration generated by CCNAPractice.com
  • !
  • !
  • hostname R3
  • !
  • !
  • !
  • !
  • interface Serial0/0
  •  ip address 172.16.3.2 255.255.255.0
  •  clock rate 64000
  •  no shutdown
  • !
  • interface Serial0/1
  •  ip address 172.16.2.2 255.255.255.0
  •  no shutdown
  • !
  • interface FastEthernet0/0
  •  ip address 192.168.3.1 255.255.255.0
  •  no shutdown
  • !
  • !
  • line con 0
  • !
  • end
  •  

Final Configuration

Show/Hide
R1R2R3
  • !Configuration generated by CCNAPractice.com
  • !
  • !
  • hostname R1
  • !
  • !
  • !
  • !
  • interface Serial0/0
  •  ip address 172.16.1.1 255.255.255.0
  •  clock rate 64000
  •  no shutdown
  • !
  • interface Serial0/1
  •  ip address 172.16.3.1 255.255.255.0
  •  no shutdown
  • !
  • interface FastEthernet0/0
  •  ip address 209.168.1.1 255.255.255.252
  •  no shutdown
  • !
  • !
  • router ospf 20
  •  router-id 1.1.1.1
  •  network 172.16.1.0 0.0.0.255 area 0
  •  network 172.16.3.0 0.0.0.255 area 0
  • !
  • line con 0
  • !
  • end
  •  
  • !Configuration generated by CCNAPractice.com
  • !
  • !
  • hostname R2
  • !
  • !
  • !
  • !
  • interface Loopback1
  •  ip address 2.2.2.2 255.255.255.255
  •  no shutdown
  • !
  • interface Serial0/0
  •  ip address 172.16.2.1 255.255.255.0
  •  clock rate 64000
  •  no shutdown
  • !
  • interface Serial0/1
  •  ip address 172.16.1.2 255.255.255.0
  •  no shutdown
  • !
  • interface FastEthernet0/0
  •  ip address 192.168.2.1 255.255.255.0
  •  no shutdown
  • !
  • !
  • router ospf 10
  •  passive-interface FastEthernet0/0
  •  network 172.16.2.0 0.0.0.255 area 0
  •  network 172.16.1.0 0.0.0.255 area 0
  •  network 192.168.2.0 0.0.0.255 area 0
  • !
  • line con 0
  • !
  • end
  •  
  • !Configuration generated by CCNAPractice.com
  • !
  • !
  • hostname R3
  • !
  • !
  • !
  • !
  • interface Loopback1
  •  ip address 3.3.3.3 255.255.255.255
  •  no shutdown
  • !
  • interface Serial0/0
  •  ip address 172.16.3.2 255.255.255.0
  •  clock rate 64000
  •  no shutdown
  • !
  • interface Serial0/1
  •  ip address 172.16.2.2 255.255.255.0
  •  no shutdown
  • !
  • interface FastEthernet0/0
  •  ip address 192.168.3.1 255.255.255.0
  •  no shutdown
  • !
  • !
  • router ospf 10
  •  passive-interface FastEthernet0/0
  •  network 172.16.3.0 0.0.0.255 area 0
  •  network 172.16.2.0 0.0.0.255 area 0
  •  network 192.168.3.0 0.0.0.255 area 0
  • !
  • line con 0
  • !
  • end
  •  

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