OSPF IPv4 Lab Open Shortest Path First

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
  • Explicitly set the router-id of R2 to 2.2.2.2
  • 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
  • No other routers are attached to the ethernet interfaces on R2 and R3. Ensure that no OSPF adjacencies are formed on these interfaces

Initial Configuration (Already applied to devices in console)

R1 R2 R3
!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

R1 R2 R3
!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 50
 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 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 20
 router-id 2.2.2.2
 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 30
 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


R1#
R2#
R3#

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