High Speed LAN

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Presented By:
William Stalling

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Why High Speed LANs?

Office LANs used to provide basic connectivity
Connecting PCs and terminals to mainframes and midrange systems that ran corporate applications
Providing workgroup connectivity at departmental level
Traffic patterns light
Emphasis on file transfer and electronic mail
Speed and power of PCs has risen
Graphics-intensive applications and GUIs
MIS organizations recognize LANs as essential
Began with client/server computing
Now dominant architecture in business environment
Intranetworks
Frequent transfer of large volumes of data 



Applications Requiring High Speed LANs


Centralized server farms
User needs to draw huge amounts of data from multiple centralized servers
E.g. Color publishing
Servers contain tens of gigabytes of image data
Downloaded to imaging workstations
Power workgroups
Small number of cooperating users
Draw massive data files across network
E.g. Software development group testing new software version or computer-aided design (CAD) running simulations
High-speed local backbone
Processing demand grows
LANs proliferate at site
High-speed interconnection is necessary

Ethernet (CSMA/CD)

Carriers Sense Multiple Access with Collision Detection
Xerox - Ethernet
IEEE 802.3


read more
http://cpe.ku.ac.th/~nguan/class/204325/...edLANs.ppt