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.
