cisco bgp case study

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craigjelfs asked a question.

Does anyone have the answers for the BGP case study in the CCNP Route Lab Manual?

Question 6 asks you to advertise the 192.168.14.0 and 192.168.34.0 networks into both EIGRP autonomous systems. Then question 7 asks you to not send EIGRP packets, which is guess means use the passive-interface command.

Why would they ask you to configure EIGRP and advertise these networks and then turn around and say don't allow EIGRP packets on these interfaces.

Am i missing something really obviously?

Thanks in advance

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Wild guess...they may want you to show how to stop unwanted routes to come in..route filtering...

I agree with Deepak here.  Not only do you need to know how to advertise route, you need to know how to control what you are advertising and what routes you reveive. If you try and redistribute BGP in EIGRP with no filtering, you're probably going to crash the EIGRP router. EIGRP was not designed to handle 350,000 routes.  That's one of the many reasons to understand how to both advertise and filter routes.  That's just my guess on why the lab manual would have you do that.

I didn't use that lab manual, but it sounds interesting!

Happy Studying.

Message was edited by: ErickB

The point is those two subnets connect two BGP autonomous systems. You want the subnets advertised because you need to tell other routers within the EIGRP domain how to reach them. You want to filter the EIGRP packets because they are not needed as the routers are in different AS's and won't become neighbors anyway.

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