By Matthew S. Gast
It is a nice e-book for wireless process engineers to appreciate 802.11 a\b\g PHY and MAC. The publication not just talks approximately theoretical stuff but in addition offers useful facets of wireless networking.
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This can be a nice e-book for wireless approach engineers to appreciate 802. eleven a\b\g PHY and MAC. The booklet not just talks approximately theoretical stuff but additionally supplies functional points of wireless networking.
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Additional resources for 802.11 Wireless Networks: The Definitive Guide, Second Edition
11 radio chipsets have the ability to create 32 or even 64 BSSes, which is adequate for nearly every configuration. Robust security networks (RSNs) Early wireless LANs proved to have feeble built-in security. 11i, which was ratified in June 2004, specifies a set of improved security mechanisms that provide robust security network associations (RSNAs). 11i are in use. 11i may be composed of hardware, software, or both, depending on the exact architecture of a particular device. Hardware which does not support the improved protocols is referred to as pre-RSN capable.
One common way of coping with guest access is to create two extended service sets on the same physical infrastructure. 11 chipsets can create multiple networks with the same radio. Using modern chipsets, each access point hardware device can create two BSSs, one for the network named guest, and one for the network named internal. Within the AP, each SSIDs is associated with a VLAN. The guest network is connected to a VLAN prepared for public access by unknown and untrusted users, and is almost certainly attached outside the firewall.
Providing MAC-layer mobility while following the path blazed by previous 802 standards requires a number of additional services and more complex framing. Network Services One way to define a network technology is to define the services it offers and allow equipment vendors to implement those services in whatever way they see fit. 11 provides nine services. Only three of the services are used for moving data; the remaining six are management operations that allow the network to keep track of the mobile nodes and deliver frames accordingly.
802.11 Wireless Networks: The Definitive Guide, Second Edition by Matthew S. Gast