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Local Area High Speed Networks by Dr. Sidnie Feit

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Fiber Distributed Data Interface

Fiber Distributed Data Interface (FDDI) LANs were introduced in the mid-1980s. The technology was developed by the American National Standards Institute (ANSI) X3T9.5 standards committee.

FDDI LANs were designed to operate at high speed, be reliable, and have a large diameter. This made FDDI a popular choice for LAN backbones.

Data is transmitted around a ring at 100Mbps. Systems can be connected by dual rings, and after a break a usable ring path is established automatically. A dual-ring fiber optic network can have a circumference of 100 kilometers.

FDDI truly is a legacy technology that is being replaced by high-speed Ethernet switches.

In place of costly 100Mbps FDDI NICs, there are now cheap 100Mbps Ethernet ...

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