A Field Guide to Wireless LANs for Administrators and Power by Thomas Maufer

By Thomas Maufer

During this ebook, best-selling networking writer Thomas Maufer explains how instant LANs paintings, and the way to lead them to paintings for you-reliably and securely. Maufer takes you less than the hood with present day most recent WLAN applied sciences, delivering useful perception and context for deploying, coping with, and troubleshooting WLANs in any atmosphere, from the firm to the home.Covers all prime IEEE 802.11 instant criteria: 802.11a, 802.11b, 802.11g, and 802.11i/WPAShows tips on how to set up small, mid-sized, huge, public, company, and residential networksProvides pattern Windows(R), Linux(R), and MacOS(R) configurations that assist you start quicklyDemystifies WLAN protection so that you can know how to guard your dataIlluminates the 802.11 protocol so that you can troubleshoot extra effectivelyPreviews tomorrow's WLAN criteria and purposes for enterprise and residential (IEEE 802.11j and 802.11n)Whether you are a network/system administrator or an influence consumer, Thomas Maufer demystifies instant LAN technology... so that you can maximize the advantages whereas minimizing the hassles.

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As indicated in the diagram, both IPv4 and IPv6 share the same basic encapsulation. 11 is highlighted. Figure 2-5. 3 Ethernet (with the "Length" as opposed to "Type" interpretation of the frame), the protocol stack using the LLC sub-layer is used. 2 LLC sub-layer protocol(s). 3/Ethernet. The presence of a "Type" field in the original Ethernet header is the main thing that distinguishes it from the protocols that were subsequently developed by the IEEE LMSC, since all of those subsequent protocols rely on the LLC sub-layer protocol (and possibly the SNAP sub-layer protocol) to identify the contents of the frame.

Due to the ever-increasing deployment of the IP (which is connectionless), it is becoming more difficult to find real-world examples of connection-oriented Network layer protocols. 25, which is a WAN-oriented Network layer protocol that emerged in the late 1970s that happens to be an example of a Network layer protocol that is connection-oriented and supports reliable delivery. In addition to addressing information, the header of a Network-layer protocol will include some way to indicate the proper higher-layer client protocol.

An Ethernet PHY was also defined to allow operation over analog broadband media (specifically, a pair of closed circuit television channels), but that form of deployment (known as 10BROAD36) was never very popular. 2 LLC (and possibly SNAP) protocols for its proper operation. This is proof of the wide applicability of the IEEE LMSC model of Data Link protocols. 5 designed FDDI as a MAC sub-layer protocol that required LLC, despite the fact that FDDI was not a product of the IEEE LMSC. As of the late 1990s, FDDI became obsolete, since the necessary PHY components necessary to build FDDI "NICs" or FDDI interfaces for hubs (concentrators), switches, or routers were no longer produced.

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