An intermediate examination of a current way of setting up networks. Virtual LANs (vLANs) allow network administrators to group users in a logical network rather than one based upon physical location (as with traditional LANs). For example: users who require the high speed laser can be on one segment whilst inkjet users can be placed on another, regardless of physical location. "Virtual LANs" gives all the background information on vLANs, ATM, FDDI, Frame Relay, and the Ethernet. The author gives practical advice on setting up a Virtual LAN and managing it.

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Virtual LANs, or vLANs, represent a quantum leap forward in enterprise networking. Using vLAN technology, network managers and administrators quickly and easily structure, restructure, and support networks on the basis of changing user-group needs, rather than physical infrastructure and group employee location.

Written by an internationally recognized lecturer and author who presented the first seminar on virtual LANs and virtual networking, this book provides an in-depth examination of both technologies. Gilbert Held tells you what you need to know to evaluate vendor products and successfully set up and manage a LAN. He supplies all the necessary background information on ATM, FDDI, IEEE, vLAN and Internet standards, Token Ring, and Ethernet, as well as practical guidelines on the OSI Reference Model, various LAN frame and cell formats, and the operation of bridges, switches, and routers.

Virtual LANs also features detailed coverage of virtual networking, an important new technology that allows you to remote access as well as link conventional LANs with virtual LANs to form intranets on the Internet. Held explores the various advantages and disadvantages of this important emerging technology, carefully weighing such crucial pros and cons as cost effectiveness and enhanced reliability versus various technical limitations and network security risks associated with virtual networking.

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