Networks Network Design Software

I'm looking for some software for designing network topologies/architecture diagrams. My distro is CentOS4.4 (RHL4 based). Any ideas ?

 

http://www.google.co.uk/search?hl=en&q=linux+network+diagram+software&btnG=Google+Search&meta= is what you want.

I know its old, but it should give you a starting point. http://www.linuxdevcenter.com/pub/a/linux/2001/02/15/LinuxAdmin.html

 

I use dia, works on Windows and Linux

 

I use Kivio on Linux, and Visio (I know) whenever I'm forced on Windows

 

Viso for me

 

I hate to be rude, but there really was no need for this post. He is looking for software that will run on CentOS, plus Glider has already mentioned Visio(and spell it correctly hehe)
But just keep that in mind next time you post, thanks!

 

Well, as a means to continue this topic, Does anyone know any free SW that helps with the design (not only "drawing" the network)? For example, ip adressing, subnetting or supernetting, router configuration, etc???