Cisco IOS in a Nutshell, 2nd Edition
A Desktop Quick Reference for IOS on IP Networks
Publisher: O'Reilly Media
Final Release Date: August 2005
Pages: 798

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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New Edition?

By Ryan

from Manchester, NH

Verified Reviewer


  • Accurate
  • Concise
  • Easy to understand


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    Comments about oreilly Cisco IOS in a Nutshell, 2nd Edition:

    Excellent book when I bought it 5 years ago, just came back looking if there is an update for v12.4 or v15.x which would be extreamly helpful!

    (2 of 3 customers found this review helpful)


    If I only could give 6 stars...

    By rs232

    from Undisclosed

    Comments about oreilly Cisco IOS in a Nutshell, 2nd Edition:

    I've been in networking for many years now, with many IT certifications and dozens of books on the shelf. I seriously though I knew a lot in networking... Wrong!

    I read this book from cover to cover and I found how many lack and misconception I had in my knowledge. This is far more than a cook book.

    A MUST have for anybody intrested in understand how things work in a clear, simple and very well written way surrounded by tons of example.

    I particulary like the exceptions and specific cases linked to real life scenarios.

    The way the book is structured is perfect for reading. The chapters are quite short and each technology hs it's own section. This is ideal if you don't have lot of time.

    Possibly the best networking book I've ever read at today.

    Buy this and keep it under you pillow ;-)

    Well done!!

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