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Local area networks—Evolving from shared to switched access

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4 Author(s)
Christensen, K.J. ; IBM Networking Hardware Division, P.O. Box 12195, Research Triangle Park, North Carolina 27709, USA ; Haas, L.C. ; Noel, F.E. ; Strole, N.C.

Local area networks (LANs) have become pervasive in their application to business, government, and academic data communications. In the United States alone, by 1993 there were over three million LANs installed. This paper describes how advances in structured cabling systems and electronics concentrated in the wiring closet have enabled the evolution of LANs toward a dedicated bandwidth model. Due to the growing number of users, LANs are required to provide increased data capacity and improved management capabilities. These user requirements are being met by increased functions in the electronic wiring closet that include fault isolation, remote network management, increased aggregate bandwidth, and virtual LAN capabilities. This paper focuses on present and future user requirements and the influences of emerging LAN switching technologies on already installed LANs.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Systems Journal  (Volume:34 ,  Issue: 3 )