By Chad Altman
Boson NetSim Network Simulator is an application that simulates Cisco Systems' networking hardware and software and is designed to help you learn the Cisco IOS command structure. That alone is pretty cool, but it gets better. NetSim uses its Virtual Packet Technology® engine to create individual packets that are routed and switched through the simulated network, to build an appropriate virtual routing table and to simulate true networking. NetSim doesn't just look like a real network, it acts like one too -- same telnet window, same shortcut commands, same hands-on experience.
