Dynamips

How To Set Up A Cisco Lab On Linux (CentOS 5.2) | HowtoForge - Linux Howtos and Tutorials

http://www.howtoforge.com/how-to-set-up-a-cisco-lab-on-linux-centos5.2

How To Set Up A Cisco Lab On Linux (CentOS 5.2) | HowtoForge - Linux Howtos and Tutorials

http://www.howtoforge.com/how-to-set-up-a-cisco-lab-on-linux-centos5.2

Dynamips / Dynagen Tutorial

http://dynagen.org/tutorial.htm Dynamips is a Cisco router emulator written by Christophe Fillot. It emulates 1700, 2600, 3600, 3700, and 7200 hardware platforms, and runs standard IOS images. In Chris’ own words: