GNS3 – Graphical Network Simulator Train for CCNA, CCNP, CCIP, CCIE, JNCIA, JNCIS, JNCIE
GNS3 is a graphical network simulator that allows simulation of complex networks. To allow complete simulations, GNS3 is strongly linked with : Dynamips, the core program that allows Cisco IOS emulation. Dynagen, a text-based front-end for Dynamips. Qemu, a generic…