Routing simulation tool

I am looking for good simulation tool for routing. I want to make routing plan and want to analyse the performance. It would be nice that if i can get with graphic.

It all depends, most of the routers they have thier own simulation tools. Are you trying any particular routing alogorithms?.

Try this. you might me intrested on it.

https://www.gambitcommunications.com...lab_ccna.shtml