E-Lab 9.1.5 - Administrative Distance
In this lab, you will analyze the effects of using two routing protocols.
Assume that IP addressing, hostnames, and the RIP routing protocol are configured according to the topology, and that basic connectivity has been established.
Step 1
Login to the router in privileged EXEC mode.
Step 2
Using the show ip protocols command, verify that RIP is configured properly.
Step 3
What is the administrative distance for RIP?
What would happen if both IGRP and RIP were used?
Why does this happen?
To enable IGRP, first enter global configuration mode.
Step 4.1
Add IGRP to both routers using AS 1.
Enter into router configuration mode for IGRP AS 1.
Step 4.2
Add the network 192.168.1.0 into the routing process.
Step 4.3
Add the network 192.168.2.0 into the routing process.
Step 4.4
Exit into privileged EXEC mode with the command end.
Step 5.1
Login to the router in privileged EXEC mode.
Step 5.2
Enter global configuration mode.
Step 5.3
Now do the same thing on router Apia.
Enter into router configuration mode for IGRP AS 1.
Step 5.4
Add the network 192.168.2.0 into the routing process.
Step 5.5
Add the network 192.168.3.0 into the routing process.
Step 5.6
Exit into privileged EXEC mode with the command end.
Step 6
Using the command show ip protocols, check if IGRP is correctly configured on both routers.
Step 7
View the routing table.
Step 8
Consider the following question:
Routes from which routing protocol were placed in the routing table?
Due to network migration reasons, Suva needs to use and advertise RIP routes as the preferred routing protocol.
Modify RIP on Suva to have an administrative distance of 75.
Enter into global configuration mode.
Step 9.1
Enter into router configuration mode for RIP.
Step 9.2
Specify the administrative distance of this routing protocol to be 75.
Step 9.3
Exit into privileged EXEC mode with the command end.
Step 10.1
View the routing table and notice the changes.
Why did the RIP route replace the IGRP route in the routing table?
Step 10.2
Enter the command that proves that RIP administrative distance changes are in effect.