Why buy a rack of routers when you can simulate one on your PC? That’s right, that is what you can do for free with Dynamips & Dynagen. These very cool Cisco router, switch, and PIX emulation products are free. All you need to provide is the IOS and a PC to run it on. For those studying for the CCNA or CCNP, this is perfect! In this article, you can learn how to download the emulator and see how to use it, step by step. This is one of David’s most popular TechRepublic articles! To read the full article, please visit: Practice Cisco router configuration using a free emulator