CertExams.com Simulator Lab Exercises Answers

Description: In OSPF single area, you configure OSPF network with an area ID.The configuration example uses four routers working in area 200.

IP Address Assignment Table

R1-s0	192.168.1.1	255.255.255.0
R2-w0/s0	192.168.1.2	255.255.255.0
R2-w0/s1	192.168.2.1	255.255.255.0
R2-w1/s0	192.168.3.1	255.255.255.0
R3-s0	192.168.2.2	255.255.255.0
R4-s0	192.168.3.2	255.255.255.0

Instructions:

1. Assign IP address of all the devices as per the above table and bring all the interfaces to up state (except R3-s0)

2. On R1 enable OSPF routing with process 1 and area as 200 for the network 192.168.1.0

3. On R2 enable OSPF routing with process 1 and area as 200 for the network  192.168.2.0, 192.168.2.0 and 192.168.3.0

4. On R3 enable OSPF routing with process 1 and area as 200 for the network 192.168.2.0

5. On R4 enable OSPF routing with process 1 and area as 200 for the network 192.168.3.0

6. Ping R3 from R1, you will see ping failure

7. Ping R2 from R1, you will see ping success (This implies connectivity failure from R1 to R3) 

8. Issue command on R3 to see OSPF interfaces status

9. You will see that serial 0 is down so bring it to up state

10. Ping R3 from R1, you will see ping success

Note: Please refer to the CertExams.com Network Simulator software for complete lab with commands.