| 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 a single, well-organized volume that
you'll find refreshingly user-friendly.
This handy, two-part reference covers IOS configuration for
the TCP/IP protocol family. The first section includes
chapters on the user interface, configuring lines and
interfaces, access lists, routing protocols, and
dial-on-demand routing and security. A brief, example-filled
tutorial shows you how to accomplish common tasks.
The second part is a classic O'Reilly quick reference to all
the commands for working with TCP/IP and the lower-level
protocols on which it relies. Brief descriptions and lists
of options help you zero in on the commands you for the task
at hand. Updated to cover Cisco IOS Software Major Release
12.3, this second edition includes lots of examples of the
most common configuration steps for the routers themselves.
It's a timely guide that any network administrator will come
to rely on.
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Biting the hand that feeds IT 
Published by: O'REILLY & ASSOCIATES