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Technology Information:

802.11 Wireless Networks: The Definitive Guide, Second Edition

Description

Among network designers and administrators, wired Ethernet is a known quantity. Plenty is known about how to build good twisted-pair network infrastructures, how to keep them secure, and how to monitor their excess capacity. Not so for the wireless Ethernet networks (built around the IEEE 802.11x standards)--these hold much more mystery for even experienced network designers. 802.11 Wireless Networks: The Definitive Guide aims to codify the body of knowledge needed to design and maintain wireless local area networks (LANs). The authors succeed admirably in this, covering what installation and administration teams need to know and digging into information of use to driver writers and others working at lower levels.

The only significant detail that's been excluded has to do with security--a notorious weak point of 802.11x LANs. The authors cover the feeble but widely used Wired Equivalent Privacy (WEP) authentication protocol in detail and devote another whole chapter to 802.1x, which is an emerging authentication scheme based on Extensible Authentication Protocol (EAP). The author has considerable skill in communicating information graphically and does a great job of using graphs to show how communications frequencies shift over time and how conversations among access points and network nodes progress over time. This is indeed an authoritative document. --David Wall

Topics covered: How IEEE 802.11a and 802.11b wireless networks (also known as WiFi networks) work, and how to configure your own. The framing specification is covered well, as are authentication protocols and (in detail) the physical phenomena that affect IEEE 802.11x radio transmissions. There's advice on how to design a wireless network topology, and how to go about network traffic analysis and performance improvement.

Reviews

Rating: 5 / 5
Date: 2010-02-24
Summary: "Great Book for Wi-Fi"

This is a great book for Wi-Fi system engineers to understand 802.11 a\b\g PHY and MAC. The book not only talks about theoretical stuff but also gives practical aspects of Wi-Fi networking.

Rating: 5 / 5
Date: 2010-02-15
Summary: "Brilliant explanation of 802.11 protocols and standards"

This is indeed the definitive guide on 802.11 networks. Chapters on 802.1x, 802.11i, a/b/g/n standards and network analysis were simply brilliant. I skipped quite a few chapters such as the one on modulation schemes and details of the PHY layer; maybe some day when I get additional time I will go through it again. A great book.

Rating: 5 / 5
Date: 2009-08-29
Summary: "Artur 's 802.11 Definitive Guide Review"

It's really amazing position for professionals and everyone who wants to get deep knowledge about 802.11 a/b/g/n world.

Rating: 4 / 5
Date: 2009-02-04
Summary: "great book"

Very good book lots of details on every wireless standard. I would recommend this book to anybody who wants to learn wireless networking.

Rating: 4 / 5
Date: 2008-09-05
Summary: "Very practical, little theory"

This book serves as a good, practical, "how-to" guide. The first 9 chapters are a
"TCP/IP Illustrated"-style detailed look at the low-level details of 802.11, covering the format of every packet involved, when each packet is used, what each format means and how configuration parameters on both the sending and the receiving side will affect the individual packets. This is by far the most detailed, and most useful, section of the book.

Chapters 10-13, which attempt to address the theoretical side of wireless networks (and 802.11 in particular), rush through the subject far too quickly to be of any practical value - if you have a very strong grounding in electromagnetic wave theory, you might get something from this section, but if that's the case, there's probably nothing here you don't already know. The author clearly knows what he's talking about, but he tried to cram an entire book worth of material into about 100 pages. (In his defense, he acknowledges this toward the start of the section).

The remainder of the book talks about specifics of installations and looks at Windows, Mac and Linux and examines various different hardware specifications for each. This part was interesting, but hopelessly out of date (I can't imagine how anybody could write about this topic and not be out of date before the ink dried on the print).

Missing was any coverage of WPA and WPA2. Chapter 6 talks a bit about EAP and LEAP;
I suspect that WPA & WPA2 were still undergoing standardization as this book was being written. Still, the content of the book gave me enough understanding of the building blocks of 802.11 networks to make sense of the IEEE documentation on WPA.