Cisco routers are everywhere that networks are. They come in all sizes, from inexpensive units for homes and small offices to equipment costing well over $100,000 and capable of routing at gigabit speeds. A fixture in today"s networks, Cisco claims roughly 70% of the router market, producing high-end switches, hubs, and other network hardware. One unifying thread runs through the product line: virtually all of Cisco"s products run the Internetwork Operating System, or IOS. If you work with Cisco routers, it"s likely that you deal with Cisco"s IOS software--an extremely powerful and complex operating system, with an equally complex configuration language. With a cryptic command-line interface and thousands of commands--some of which mean different things in different situations--it doesn"t have a reputation for being user-friendly. Fortunately, there"s help. This second edition of Cisco IOS in a Nutshell consolidates the most important commands and features of IOS into...