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

By Matthew Gast

As we know by means of now, instant networks provide many merits over fastened (or stressed out) networks. most efficient on that checklist is mobility, for the reason that 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 uncomplicated so you might use, and cheaper to set up and maintain.

The de facto general for instant networking is the 802.11 protocol, consisting of wireless (the instant commonplace referred to as 802.11b) and its speedier cousin, 802.11g. With easy-to-install 802.11 community on hand in every single place you switch, the alternative turns out uncomplicated, and lots of humans dive into instant computing with much less suggestion and making plans than they'd supply to a stressed out community. yet it's clever to be acquainted with either the services and dangers linked to the 802.11 protocols. And 802.11 instant Networks: The Definitive Guide, 2d variation is the right position to start.

This up-to-date variation covers every little thing you'll ever want to know approximately instant expertise. Designed with the method administrator or critical domestic consumer in brain, it's a no-nonsense consultant for developing 802.11 on home windows and Linux. one of the wide selection of themes lined are discussions on:
* deployment issues
* community tracking and function tuning
* instant safeguard concerns
* tips to use and choose entry issues
* community tracking necessities
* instant card configuration
* protection concerns special to instant networks
With instant know-how, the benefits to its clients are certainly abundant. businesses not need to take care of 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 expertise into your present infrastructure with the maximum self belief.

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

Example text

11 network. 11, except in terms of the services it must offer. Association Delivery of frames to mobile stations is made possible because mobile stations register, or associate, with access points. The distribution system can then use the registration information to determine which access point to use for any mobile station. Unassociated stations are not "on the network," much like workstations with unplugged Ethernet cables. 11 specifies the function that must be provided by the distribution system using the association data, but it does not mandate any particular implementation.

11 is a white lie about the meaning of media access control (MAC). Wireless network interface cards are assigned 48-bit MAC addresses, and, for all practical purposes, they look like Ethernet network interface cards. 11 cards have unique addresses even when deployed into a network with wired Ethernet stations. 11 MAC addresses go into ARP tables alongside Ethernet addresses, use the same set of vendor prefixes, and are otherwise indistinguishable from Ethernet addresses. 11 devices) know better.

Both BSSs must share the capacity of a single radio channel, so there may be adverse performance implications from co-located BSSs. Figure 2-8. 11 was designed to be just another link layer to higher-layer protocols. 11. 11. Stations are identified by 48-bit IEEE 802 MAC addresses. Conceptually, frames are delivered based on the MAC address. [4] [4] I don't mean "poor" in an absolute sense. But the reliability of wireless transmission is really not comparable to the reliability of a wired network.

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