
Three cheers for the Nutshell format! There may be no better printed
style for command-line environments, like the Internetwork Operating
System (IOS) that runs on Cisco Systems routers.
Cisco IOS in a Nutshell documents the most important bits of the frequently arcane IOS command line from
aaa accounting to
write,
thereby providing a valuable resource to everyone who works with IOS.
The reference section--which makes up about 60 percent of this
book--summarizes each command (again, they're not all covered, but the
ones that aren't are pretty obscure) with a statement of its scope
(global, interface, line, or whatever), followed by generalized syntax
summaries in the style of Unix man pages (these indicate the legal
combinations of switches and parameters). Then, a detailed discussion
of each switch and parameter clarifies what each is for. The whole
reference section is alphabetical, with lettered dark boxes on the
pages' outer edges that are easy to scan while flipping pages rapidly.
Prior to the reference section, the author explains how the IOS
interface refers to and controls aspects of routers, such as lines and
interfaces. He does a great job of it, too--you could do far worse than
to read his explanations before going to work under IOS for the first
time. The other great value of this early section is in the author's
discussion of how to configure a new router by bringing interfaces,
data-communication protocols (like TCP/IP), routing protocols (like
Border Gateway Protocol, or BGP), and services like Domain Name Service
(DNS) online. This book is a tremendous value for Cisco engineers. --David Wall
Topics covered:
How to configure a Cisco Systems router with the Internetwork Operating
System (IOS). The most popular commands are documented, and there's a
tutorial section that familiarizes readers with the Cisco way of
thinking about a router's work. The author uses IOS 12.x as his
baseline, though users of older versions will find his work valuable.