Day 48 Lab – OSPF

Topology

 Instructions

Connect two routers together with a serial or crossover cable:

1. Add IP addresses to the routers and a Loopback interface on Router A and Router B, according to the diagram
2. Ping between Router A and Router B to test the serial line (remember clock rates)
3. Configure OSPF on both routers
4. Ensure that you add all the correct wildcard masks
5. Double-check the WAN wildcard mask and subnet: it ISN’T 172.16.1.0 0.0.0.3!!
6. Put all networks into an area, but put 192.168.2.0/24 into Area 1 and 10.2.2.0 into Area 2
7. Check the routing table
8. Check the router ID for each router
9. How would you change the router ID for each router?

Solution Hints and Commands

• Use the router ospf x command to enter OSPF Configuration mode
• Use the network x.x.x.x y.y.y.y area z command to configure a network in an area
• Use the show ip route command to view the routing table
• Use the router-id x.x.x.x command to change the OSPF router id under the OSPF Process Configuration mode