CertExams.com Simulator Lab Exercises Answers

OSPF troubleshooting lab scenario-2

Console Based  |  GUI Based 

Console Based :

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

Instructions:

1. Assign IP address of all the devices as per the above table and bring all the interfaces to up state (except R3-s0/0)

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 192.168.1.0, 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 0/0 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. 

GUI Based :

Instructions:

1. Select R1 from Select Device drop down box.

2. Choose configure > Interface Management > Interface and Connections.

3. In Edit Interface connections tab select the S0/0 interface and click edit button

4. Configure the IP address as 192.168.1.1 255.255.255.0 and enable the interface status.

5. Choose Router > Dynamic Routing select OSPF from the protocol list and click Edit button.

6. In the Edit IP dynamic routing window enter OSPF process id 1 and click add button to add a network.

7. Enter 192.168.1.0 as network address , wildcard mask 0.0.0.255 and area 200 and click OK button.

8. Select device R2 from Select Device drop down box.

9. Repeat steps 2 – 7 for configuring R2 S0/0 interface ip address as 192.168.1.2 255.255.255.0 , S0/1 interface ip address as 192.168.2.1 255.255.255.0 and S1/0 interface ip address as 192.168.3.1 255.255.255.0 and network addresses 192.168.1.0 ,192.168.2.0 , 192.168.3.0 and wildcard mask as 0.0.0.255 and area 200 

10. Select R3 from Select Device drop down box.

11. Repeat steps 2 – 7 for configuring R3 S0/0 interface ip address as 192.168.2.2 255.255.255.0 and select disable from interface status drop down box, and network addresses 192.168.2.0 , wildcard mask as 0.0.0.255 and area 200.

12. Select R4 from Select Device drop down box.

13. Repeat steps 2 – 7 for configuring R4 S0/0 interface ip address as 192.168.3.2 255.255.255.0 and network addresses 192.168.3.0 , wildcard mask as 0.0.0.255 and area 200

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

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

16. Issue “show ip ospf interface” command on R3 to see OSPF interfaces status

17. You will see that serial 0/0 is down so bring it to up state using Interface Management > Interface and Connections this displays Interface and Connections screen. Click Edit Interface Connection tab. Select S0/0 interface from the list and click Edit button. In the interface feature edit screen select Enable from the interface status drop down box and click OK button.

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

Note: You need to assign the IP addresses and make the interfaces up (by issuing no shutdown commands at appropriate interfaces) for all the devices before proceeding with the following commands