Fiber distributed data interface: an overview

The fiber distributed data interface (FDDI), a 100 megabit per second (Mb/s) local area network (LAN) that uses optical fiber as the medium, and the development of the FDDI standards are briefly reviewed. The FDDI protocol is based on a token ring access method. the FDDI is being developed as an American National Standard in Accredited Standards Committee X3T9. FDDI is also being developed as an International Standard in ISO/IECJTC1/SC 25. Both the basic FDDI and FDDI-II, an upward-compatible enhancement of the basic FDDI that adds a circuit-switched service to the packet service of the basic FDDI, are covered