Pejman Roshan's 802.11 Wireless LAN Fundamentals PDF

By Pejman Roshan

ISBN-10: 1587050773

ISBN-13: 9781587050770

Grasp the fundamentals in designing, construction, and coping with a Cisco Aironet WLAN. grasp the fundamentals of instant LANs with this concise layout and deployment consultant comprehend implementation concerns for numerous environments together with vertical, SOHO, and firm networks examine layout and troubleshooting suggestion from real-world case experiences 802.11 instant LAN basics provides networking engineers and IT execs the information they should layout, installation, deal with, and troubleshoot their very own instant local-area networks (WLANs). beginning with an outline of the know-how and structure of WLANs, the ebook is going directly to clarify prone and complicated positive factors that such purposes offers. most significantly, it presents sensible layout counsel and deployment techniques. instant LANs attach desktop networks through radio transmissions rather than conventional cellphone traces or cables. merits to those structures cross well past eliminating all of the cables and wires. Campus networks can develop geographically greater whereas nonetheless holding all their potency and velocity. also, fee discount rates might be learned while third-party telephone strains are not any longer priceless, saving the price of line condominium and kit maintenance. ultimately, flexibility in campus community layout raises considerably for the networking expert, whereas the community accessibility and usability raises for the person clients. 802.11 instant LAN basics is helping networking pros observe those merits through supporting them know the way to layout, construct, and preserve those networks, in addition to the way to justify their price inside of enterprises.

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To justify their value within organizations. Yet, what if the station is a 100BASE-TX station running in half-duplex mode and does not support auto negotiation either? Will these stations be doomed to run in 10BASE-T mode? The answer is no. FLPs are based on the network link pulse (NLP) specified in the Ethernet standard. NLPs are periodic pulses that are essentially the network heartbeat. FLPs provide a similar function for 100BASE-X networks, just 10 times as often. So although the 100BASETX station does not engage in auto negotiation, it does send FLPs, which indicate to the switch that the station does support 100 Mbps operation.

Figure 2-2. 11 Wireless LAN Fundamentals ByPejman Roshan, Jonathan Leary Publisher: Cisco Press Pub Date: December 23, 2003 ISBN: 1-58705-077-3 Pages: 312 Master the basics in designing, building, and managing a Cisco Aironet WLAN. Master the basics of Wireless LANs with this concise design and deployment guide ESSUnderstand implementation issues for a variety of environments including vertical, SOHO, and enterprise networks Multiple infrastructure BSSs can be connected via their uplink interfaces.

Getting back to the example, Vivian is ready to transmit. Her NAV timer has decremented to Wireless LANs connect computer networks via radio transmissions instead of traditional 0, and the PHY also indicates the medium is idle. Vivian selects a random backoff time phone lines or cables. Benefits to these systems go well beyond getting rid of all the cables between 0 and CW (in this case, CW is 7) and waits the selected number of slot times before and wires. Figure 2-7 illustrates this process, with a random backoff value of four slot efficiency and speed.

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802.11 Wireless LAN Fundamentals by Pejman Roshan

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