:: MArX'' Frustrated communist, card-carrying geek.

GNS: Route redistribution example

Nowadays I'm Cisco CCNA, and I plan to take the CCNP certification during this year. The first test I decided to do is the BSCI. A important topic for this test is route redistribution, so I made this GNS Project to explore some aspects of this feature, and I would like to share with anyone interested.

This is the scenario:

• Routers running RIP: R1, R2, R4 and R5
• Routers running OSPF (Area 0): R1, R3 and R5
• R1 has both routing protocols and it is the responsible to redistribute they.
• R4 and R5 are interconnected through RIP too, and the default behavior of R5 is try to reach R4's networks through OSPF routes (longer path), because OSPF has a better administrative distance than RIP.

The lab is fully functional, with routing redistribution working. It's possible to check the cust increment for each redistributed route received on R4 and R5 (OSPF just increment the cust when usint external type 1). But the biggest trick to observe in this lab is the administrative distance manipulaton on R5, that is what fix the suboptimal routing decision.

You can download and enjoy the project here: GNS3 LAB - Route redistibution between RIP and OSPF .
By the way I've used the Cisco IOS c2600-i-mz.123-22.bin

I hope you liked it!