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

By Matthew Gast

As we know by means of now, instant networks provide many benefits over mounted (or stressed out) networks. ideal on that record is mobility, considering the fact that going instant frees you from the tether of an Ethernet cable at a table. yet that's simply the end of the cable-free iceberg. instant networks also are extra versatile, swifter and more straightforward that you can use, and more cost-effective to install and maintain.

The de facto average for instant networking is the 802.11 protocol, consisting of wireless (the instant typical often called 802.11b) and its speedier cousin, 802.11g. With easy-to-install 802.11 community to be had in every single place 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 supply to a stressed community. yet it's clever to be conversant in either the features and dangers linked to the 802.11 protocols. And 802.11 instant Networks: The Definitive Guide, 2d version is the ideal 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 person in brain, it's a no-nonsense advisor for developing 802.11 on home windows and Linux. one of the wide variety of themes lined are discussions on:
* deployment issues
* community tracking and function tuning
* instant safety matters
* the right way to use and choose entry issues
* community tracking necessities
* instant card configuration
* defense concerns targeted to instant networks
With instant know-how, the benefits to its clients are certainly ample. businesses not need to care for the trouble and cost of wiring constructions, and families with numerous desktops can steer clear of 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 resources for 802.11 Wireless Networks: The Definitive Guide (2nd Edition)

Sample text

Any link-layer connection will suffice. Several access points in a single area may be connected to a single hub or switch, or they can use virtual LANs if the link-layer connection must span a large area. 11 supplies link-layer mobility within an ESS but only if the backbone network is a single link-layer domain, such as a shared Ethernet or a VLAN. 11 network design. 11 networks. Access points in an ESS operate in concert to allow the outside world to use a single MAC address to talk to a station somewhere within the ESS.

11 supplies link-layer mobility within an ESS but only if the backbone network is a single link-layer domain, such as a shared Ethernet or a VLAN. 11 network design. 11 networks. Access points in an ESS operate in concert to allow the outside world to use a single MAC address to talk to a station somewhere within the ESS. In Figure 2-5, the router uses a single MAC address to deliver frames to a mobile station; the access point with which that mobile station is associated delivers the frame. The router remains ignorant of the location of the mobile station and relies on the access points to deliver the frame.

2 The Hidden Node Problem In Ethernet networks, stations depend on the reception of transmissions to perform the carrier sensing functions of CSMA/CD. Wires in the physical medium contain the signals and distribute them to network nodes. Wireless networks have fuzzier boundaries, sometimes to the point where each node may not be able to communicate with every other node in the wireless network, as in Figure 3-2. Figure 3-2. Nodes 1 and 3 are "hidden" In the figure, node 2 can communicate with both nodes 1 and 3, but something prevents nodes 1 and 3 from communicating directly.

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