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Gary A. Donahue

Network Warrior: Everything you need to know that wasn't on the CCNA exam First Edition

by Gary A. Donahue (Author)

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Network Warrior: Everything You Need to Know That Wasn't on the CCNA Exam
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Written by networking veteran with 20 years of experience, Network Warrior provides a thorough and practical introduction to the entire network infrastructure, from cabling to the routers. What you need to learn to pass a Cisco certification exam such as CCNA and what you need to know to survive in the real world are two very different things. The strategies that this book offers weren 't on the exam, but they 're exactly what you need to do your job well.

Network Warrior takes you step by step through the world of hubs, switches, firewalls, and more, including ways to troubleshoot a congested network, and when to upgrade and why. Along the way, you 'll gain an historical perspective of various networking features, such as the way Ethernet evolved. Based on the author 's own experience as well as those he worked for and with, Network Warrior is a Cisco-centric book, focused primarily on the TCP/IP protocol and Ethernet networks -- the realm that Cisco Systems now dominates. The book covers:

The type of networks now in use, from LANs, WANs and MANs to CANs

The OSI Model and the layers involved in sending data
Hubs, repeaters, switches, and trunks in practice
Auto negotiation and why it 's a common problem in network slowdowns
Route maps, routing protocols, and switching algorithms in Cisco routers
The resilient Ethernet -- how to make things truly redundant
Cisco 6500 multi-layer switches and the Catalyst 3750 switch
Telecom nomenclature -- why it 's different from the data world
T1 and DS3
Firewall theory, designing access lists, authentication in Cisco devices
Server load balancing technology
Content switch module in action
Designing QOS and what QOS does not do
IP design and subnetting made easy

The book also explains how to sell your ideas to management, how networks become a mess as a company grows, and why change control is your friend. Network Warrior will help network administrators and engineers win the complex battles they face every day.

ISBN-10

0596101511
ISBN-13

978-0596101510
Edition

First
Publisher

O'Reilly Media
Publication date

June 1, 2007
Language

English
Dimensions

7 x 1.34 x 9.19 inches
Print length

576 pages
See all details

Gary Donahue
245
Paperback
42 offers from $19.56

Editorial Reviews

About the Author

Gary A. Donahue is a working consultant who has been in the computer industry for 25 years. Gary has worked as a programmer, mainframe administrator, Technical Assistance Center engineer, network administrator, network designer, and consultant. Gary has worked as the Director of Network Infrastructure for a national consulting company and has been the president of his own New Jersey consulting company; GAD Technologies.

Product details

Publisher ‏ : ‎ O'Reilly Media; First edition (June 1, 2007)
Language ‏ : ‎ English
Paperback ‏ : ‎ 576 pages
ISBN-10 ‏ : ‎ 0596101511
ISBN-13 ‏ : ‎ 978-0596101510
Item Weight ‏ : ‎ 2.08 pounds
Dimensions ‏ : ‎ 7 x 1.34 x 9.19 inches

Best Sellers Rank: #1,260,669 in Books (See Top 100 in Books)
- #105 in Intranets & Extranets
- #134 in LANs (Books)
- #175 in Cisco Certification Guides

Customer Reviews:
80 ratings

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Gary A. Donahue

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Gary A. Donahue (GAD) is an author who has been in the computer industry for over 35 years. He has worked as a programmer, mainframe administrator, TAC engineer, network architect, consultant, trainer, and content developer. Gary has also worked as the Director of Network Infrastructure for a national consulting company and was the president of his own New Jersey consulting company; GAD Technology, L.L.C., though he now spends most of his waking hours working for Arista Networks.

Having spent a great deal of time writing documentation for clients, Gary learned that it was this part of the job that he most enjoyed. After writing a successful book on Networking entitled Network Warrior, he has dedicated much of his free time to writing. In June of 2011, the second edition of Network Warrior hit the shelves, and his latest book, Arista Warrior 2nd Edition goes on sale in June of 2019. Gary has also written Cozy Tales, a book about his beloved Newfoundland dog, which has not yet been picked up by a publisher (http://cozy-tales.com).

Being a teacher by nature, Gary enjoys the process of imparting information and understanding to others. Gary has taught Tae Kwon Do, Photography and Astronomy both informally and professionally. Being someone who disdains boredom, Gary has many hobbies including amateur radio, astronomy, bicycling, computers of all kinds, gadgets, guitar, hiking, home theater, martial arts, photography, SCUBA diving, chess, and competitive shooting. Many of these hobbies are reflected in the articles written on his sites, http://www.gad.net/Blog/, http://gadsguilds.com, and http://cozy-tales.com.

Customer reviews

4.5 out of 5

80 global ratings

5 star		64%
4 star		25%
3 star		9%
2 star		3%
1 star 0% (0%)		0%

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Top reviews from the United States

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Big Chungus

Essential reading for both the exams and everyday networking.

Reviewed in the United States 🇺🇸 on February 24, 2008

Verified Purchase

In preparation for the CCNA exam, I have gone through several networking books, both Cisco-specific and otherwise. I had thought that the official Cisco Press CCNA set was the best resource... until I took a chance on this tome. While I have found the Wendell Odom CCNA set to be the definitive guide to CCNA/CCENT material, I now must admit that this book is nearly - or even exactly - as essential as a CCNA exam prep guide. While the other guides read like textbooks, giving the reader adequate conceptual and theoretical information, this book felt like a nice long chat with a seasoned "network warrior" about real-world, everyday issues faced by network engineers.

What set this book apart from the thousands of pages (hey, I'm dedicated!) of material I'd already covered?

- CatOS commands; the new Cisco Press books barely mention that CatOS exists!
- anecdotes and real-world examples; even if you know how it *should* work, this book reveals how it *does* work
- objective viewpoint on Cisco technology; no "Cisco's way is the best way" dogma here
- meaningful discussion of high-end, core-strength equipment; everything in the Wendell Odom set focused exclusively on Catalyst 2960 switches and one model of router
- frank, direct, humorous, and engaging style; half the material I've covered previously was dreadfully dull
- illustrations for every concept; this makes my life so much easier when trying to explain things to fellow junior technicians

While the book may seem daunting at nearly 600 pages, I'm flying through it at about 80-100 pages per day. The text is very engaging, and the author's way of phrasing things is informative and structured yet very flowing and casual. I feel that every chapter contains some point, if not several points and concepts, that I wouldn't have known from the other books out there. What is possibly the best feature of this book is the real-world, realistic approach to every concept and issue. The Cisco Press books seem to assume that the reader will be using 2960 access layer switches running IOS 12.2 or better. Network Warrior does not make this assumption. The author makes the realistic assumption that the reader's network could have all kinds of gear networked together, and thus includes information about CatOS as well as a wide variety of Cisco hardware. Also included are some quick and dirty tricks to save time, money, and effort. For example, I didn't know that I could abbreviate almost any command in IOS ("sho" instead of "show", etc.) and still get the same result until I read this book. While I feel that the by-the-book approach of the Cisco Press material is necessary for building a clear foundation, I feel that this book's get-the-job-done take on networking is a necessary follow-up.

The book assumes some working knowledge of networking, but not too much. It doesn't explain the bare basics of networking, nor does it give a history lesson about the histories of each and every cabling standard and networking protocol. It's not a total replacement for a book about networking basics, nor a beginner's guide to the CCNA and/or Cisco equipment. What it does instead is reshape one's conception of what a network is and how to manage it. What it does as well, and does excellently, is fill in the gaps that sorely needed filling in the great mass of other Cisco material out there. If you are preparing for the CCNA, or if you have already passed and think you know all you'll need to know about managing Cisco networks, this book was written for you. I guarantee you will learn something new.

17 people found this helpful

Helpful

Man in Manhattan

CCNA and Beyond...

Reviewed in the United States 🇺🇸 on January 1, 2010

Verified Purchase

As the back of the book says, "This book begins where certification exams leave off...". I've just stepped off my first real Network Engineering contract job, and is still studying for that elusive CCNA. I have been a Sys Admin for over ten years and I must say - the World of Networks is the "true" IT. I've had a Network + cert for almost a decade, but I was NOT prepared for some of the things required on the real job arena. Some engineers that worked with me didn't yet have their CCNA either, but they knew their stuff.

If you are studying for a CCNA certification yourself, you have to ask yourself one question - are studying to pass a test, or do you want to learn something? If you want to learn, get a Network Engineering job, or go to a GOOD school. If you want to pass a test, then read the book(s), and study the practice exams. There's no short cuts around either road. This book, by Gary Donahue, promises to bridge that missing link between the classroom and the server room. I haven't read all of it of course (I just got it today), but I had breezed through a digital copy of the book before I actually bought a physical copy from Amazon. This book is 1.25 inches thick and comes with a 45-Day access to the digital version from Safari. However, there just is no comparison between a solid book you can hold in your hands and a digital book. A REAL book is something you can mark with notes and highlights - that's how you can truly own a book.

But I also live in a small apartment in New York City, so shelve space is also an issue. Plus digital books make great reference materials, searches take seconds. It's a balance, there is no panacea for all situations.

My order from Amazon.com came in TWO days, and I only chose the FREE Super Saver Shipping option, so I didn't even pay extra. Only the New York sales tax (Arrgh!). I'm very happy with my purchase, and is very pleased with the U.S. government for building the internet for Amazon.com to do business in. I'm giving this book FOUR stars, because there is not even a single mention of "ROLLOVER cable" in it. Yes, I am deliberately being picky.

2 people found this helpful

Helpful

Dayne

Excellent book

Reviewed in the United States 🇺🇸 on May 17, 2008

Verified Purchase

I found this book to be absolutely remarkable. The text at the top about it being what you need to be that wasn't on the CCNA is all too true.

Mr. Donahue's writing style is what makes the book. He explains often complex topics in a manner of a grizzled old veteran telling a war story. He doesn't break down into the deep technical details, he tells you how it works and why you should do it the way he's telling you to.

There's more that goes into being a network monkey than just knowing what commands to type, and the insight he offers into the more social aspects of how to be a network guy are invaluable. It is my honest opinion that the final chapters, particularly those on how to deal with management and being a nerd, should be required reading for anyone that works at a technology company.

It is my sincere hope that Mr. Donahue continues his writing career and takes his style of communicating to other complex subjects. I would love a dissertation of BGP written in the same manner, for example.

If you're a bright shiny new CCNA, or studying for the CCNA, and you're serious about pursuing a career in networking, buy this book. It won't help you pass any exams, but you'll find it as one of your favorite reference materials nonetheless.

2 people found this helpful

Helpful

Top reviews from other countries

StoicCynic

A handy all-round coverage

Reviewed in the United Kingdom 🇬🇧 on September 11, 2009

Verified Purchase

This book is a very useful thing to have to hand for when your mind goes blank on the basics of something you don't use every day, but also for an overview of something usually neglected in such works: the business liason side of being an IT professional.

It's very Cisco orientated, but that's no surprise, given Cisco's market penetration, nor is it a terribly bad thing...I suppose it just reflects the way the world is. The only time it really grated on me was regards firewalls and server load balancers, since Cisco's offerings in these spaces suck like a Dyson on steroids (Mr. Donohue's praise for the late, unlamented Local Director series, for example, is very puzzling to me - but each to their own, I guess). However, it would have been nice for it to be a bit more platform-agnostic, I think. Also, BGP gets no more than a passing nod, really, and for that critically important protocol to be dismissed with what boils down to "Well, you probably won't need to config BGP unless you work for an ISP" is a bit weak.

Apart from that, pretty good.

7 people found this helpful

Mr. S. Baines

excellent book

Reviewed in the United Kingdom 🇬🇧 on July 22, 2009

Verified Purchase

The book is waht it says "network warrior". It is easy to read and understand. Certain network knowledge it advisable. But with the examples of what different commands do when aspecs are turned on and off is brilliant. I actually found it very hard to put down, but you have to sleep sometime.

AmazonCustomer121

AVERAGE

Reviewed in the United Kingdom 🇬🇧 on May 13, 2014

Verified Purchase

It was RECOMMENDED to me to purchase this book from a colleague okay it is the newer version that he recommended. This book is okay for the price i guess. But I would not buy it again, if I lost it.

One person found this helpful

billy

Version 2 is a lot better dont get this one

Reviewed in the United Kingdom 🇬🇧 on February 2, 2018

Verified Purchase

Wish i got version 2, has a lot more then this one

Mr. M. G. Bancroft

Still brilliant

Reviewed in the United Kingdom 🇬🇧 on July 24, 2014

Verified Purchase