Read e-book online 802.11 Wireless Networks: The Definitive Guide (2nd Edition) PDF

By Matthew Gast

ISBN-10: 0596100523

ISBN-13: 9780596100520

As we know via now, instant networks supply many benefits over fastened (or stressed) networks. most excellent on that record is mobility, considering going instant frees you from the tether of an Ethernet cable at a table. yet that's simply the top of the cable-free iceberg. instant networks also are extra versatile, quicker and more straightforward that you can use, and cheaper to set up and maintain.

The de facto commonplace for instant networking is the 802.11 protocol, including wireless (the instant normal often called 802.11b) and its speedier cousin, 802.11g. With easy-to-install 802.11 community to be had all over you switch, the alternative turns out easy, and plenty of humans dive into instant computing with much less proposal and making plans than they'd provide to a stressed community. yet it's clever to be conversant in either the services and hazards linked to the 802.11 protocols. And 802.11 instant Networks: The Definitive Guide, 2d version is the right position to start.

This up to date version covers every thing you'll ever want to know approximately instant know-how. Designed with the procedure administrator or severe domestic consumer in brain, it's a no-nonsense advisor for developing 802.11 on home windows and Linux. one of the wide variety of issues coated are discussions on:
* deployment concerns
* community tracking and function tuning
* instant safeguard matters
* the right way to use and choose entry issues
* community tracking necessities
* instant card configuration
* safety concerns distinctive to instant networks
With instant expertise, the benefits to its clients are certainly abundant. businesses now not need to care for the effort and fee of wiring constructions, and families with a number of desktops can stay away from fights over who's on-line. And now, with 802.11 instant Networks: The Definitive Guide, second version, you could combine instant know-how into your present infrastructure with the maximum self belief.

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Additional info for 802.11 Wireless Networks: The Definitive Guide (2nd Edition)

Example text

11 vendor can have its products tested for interoperability. Equipment that passes the test suite can use the Wi-Fi mark. 11a standard, WECA will allow use of the Wi-Fi5 mark. 11a products use a different frequency band of around 5 GHz. org/. 11 standards. 11 were initially released in 1997. 11 included an infrared (IR) layer that was never widely deployed, as well as two spread-spectrum radio layers: frequency hopping (FH) and direct sequence (DS). 11 products were limited to 2 Mbps, which is quite slow by modern network standards.

Seamless transitions from the lefthand ESS to the righthand ESS are not supported. ESS transitions are supported only because the mobile station will quickly associate with an access point in the second ESS. Any active network connections are likely to be dropped when the mobile station leaves the first ESS. Figure 2-10. ESS transition 22 Chapter 3. 11 standard in depth. Chapter 2 provided a high-level overview of the standard and discussed some of its fundamental attributes. You are now at a fork in the book.

11 networks consist of four major physical components, which are summarized in Chapter 2. The components are: 12 Figure 2-3. 11 LANs Distribution system When several access points are connected to form a large coverage area, they must communicate with each other to track the movements of mobile stations. 11 used to forward frames to their destination. 11 does not specify any particular technology for the distribution system. In most commercial products, the distribution system is implemented as a combination of a bridging engine and a distribution system medium, which is the backbone network used to relay frames between access points; it is often called simply the backbone network.

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802.11 Wireless Networks: The Definitive Guide (2nd Edition) by Matthew Gast


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