Any good library or software for queue networks simulation?

Question

I have been trying to make work EZSIM with no luck, wich is a software to build discrete event simulators in a graphical DOS environment. In this software, my simulator and many others (of the other people in the course I'm taking) don't work, but teacher's simulator (and examples of the downloaded files) does work.

So, I began to distrust of the software.

Do you know any software that resolves the same kind of problems but really works? It will be good if it is free, or I can download an evaluation copy or something like that.

If you don't know any software, do you know any library wich might work? Preferably in C#, Ansi C, Java or Delphi.

Answer 1

I used Möbius in my computer systems analysis class. It is free for educational use (which sounds like what you're doing). It's a Java GUI which generates C++ code.

Answer 2

This may be more than what you're looking for, but check out NS2. It's the standard for open source network simulations, and will allow you to simulate all kinds of network layer behavior.

I've also used JUNG in the past. It's very flexible, although it also doesn't offer much out of the box.