Cluster ID in avoid the LOOP

[sriraj2009]

Hi,

understood the working concept of Cluster ID when having multiple RR's with multiple clusters, but Could you pl provide the practical scenario where there is a chance of loop and how cluster ID will help in avoiding the loops..

Thanks,

Rajesh.M

[John Blakley]

Rajesh,

Here's a scenario:

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800c95bb.shtml#multrr

[Stephane Bonnet]

Hi Rajesh,

You can build you own with GNS3, simply build a kind of triangle.

You just need to memorize that the goal to reach is to reflect back a route to its originator.

Imagine & draw an AS with 3 Clusters of 2 RRs each interconnected, each of them by well placed links.

Inject some prefix in BGP in a specific Cluster and look the result.

Mother of learning is practicing good luck in your study!

Stephane