SIMULATION OF MULTICHANNEL FDDI

Abstract

The rapid evolution in computing technology and the emergence-of user interfaces based digital audio and digital video will soon demand a nv,w gVhgrdtibt tit tdf0U i' Communication network which is characterized by both dramatically increasing bandwidth and the need for real-time communication. The emergence of optical fiber has paved a way to high speed communication. Today, the optical fiber based Fiber Distributed Data Interface (FDDI) taken ring is the most promising candidate for the next generation of the local area networks. With a tenfold increase in the data bandwidth, FDDI surely meets the requirements posed by "Traditional" LAW applications. FDDI is an ANSI standard for 100 megabits per second fiber-optic token rings. A significant feature of FDDI is that it can support various applications, such as packet voice, image, and real time control which require deterministic access to the channel, but can tolerate errors to some extent. Basically FDDI is a timed token protOcal. The timed token scheme of FDDI provides guaranteed maximum delay for synchronous transmission. On the other hand there is a trade off between throughput and response time. The access right of a station is controlled by Timers. In this dissertation work the performance analysis of FDDI environment has been carried out. The simulation is done seperately for single channel and multichannel .FDDI. The results are obtained in the form of graphs. The programming is done in 'c' on PC AT system in DOS environment.