Management Operations

While being untethered from a wired network can be an advantage, it can lead to problems: the medium is unreliable, unauthorized users can take advantage of the lack of physical boundaries, and power consumption is critical when devices are running on batteries. The management features of the 802.11 protocol were designed to reduce the effect of these problems. In essence, management operations are all the behind-the-scenes tasks that wireless network devices perform so that the wireless link looks much like other types of network connections.

802.11 management is a cooperative affair, shared between client devices and the network infrastructure. Unfortunately, this leaves a great deal of the protocol operation in the hands of devices that may vary greatly. Some device drivers allow you to customize the management features discussed in this chapter. Keep in mind, though, that the capabilities of the device driver vary from one product to another, and the state of wireless networking is such that some vendors are trying to produce the most feature-rich products possible, while others are aiming at a lower-cost market and trying to produce the simplest products. The only way to know what is possible is to understand the capabilities that have been built into the protocol. Then you'll be in a good position to work with whatever hardware drops in your lap.

Introduction to Wireless Networking

Overview of 802.11 Networks

11 MAC Fundamentals

11 Framing in Detail

Wired Equivalent Privacy (WEP)

User Authentication with 802.1X

11i: Robust Security Networks, TKIP, and CCMP

Management Operations

Contention-Free Service with the PCF

Physical Layer Overview

The Frequency-Hopping (FH) PHY

The Direct Sequence PHYs: DSSS and HR/DSSS (802.11b)

11a and 802.11j: 5-GHz OFDM PHY

11g: The Extended-Rate PHY (ERP)

A Peek Ahead at 802.11n: MIMO-OFDM

11 Hardware

Using 802.11 on Windows

11 on the Macintosh

Using 802.11 on Linux

Using 802.11 Access Points

Logical Wireless Network Architecture

Security Architecture

Site Planning and Project Management

11 Network Analysis

11 Performance Tuning

Conclusions and Predictions

802.11 Wireless Networks The Definitive Guide
802.11 Wireless Networks: The Definitive Guide, Second Edition
ISBN: 0596100523
EAN: 2147483647
Year: 2003
Pages: 179
Authors: Matthew Gast © 2008-2020.
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