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
  • Ensure that R1 has its router-id (1.1.1.1) assigned without the use of any interface
  • Configure R2's router-id (2.2.2.2) using a loopback interface
  • Ensure that R3's router-id will always be set to 3.3.3.3, without he use of the router-id command
  • Ensure that every router forms an adjacency and that every network is advertised throughout OSPF
  • NOTE: R1's Fa0/0 interface should not be a part of the OSPF process at all
  • Ensure that a malicious user cannot form a OSPF adjacency on the R2 and R3 LANs
  • Configure a default route on R1 to the ISP router (209.168.1.2)
  • Advertise the default route on R1 through the OSPF domain

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
!
ip route 0.0.0.0 0.0.0.0 209.168.1.2
!
!
!
!
!
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
 default-information originate
!
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 30
 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 40
 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#

Comments