Transmission of time critical information over FDDI and FDDI-II networks

One of the main objectives of FDDI (fiber distributed data interface) and FDDI-II is to support the transmission of the critical information. The performance of the two networks under the transmission of data, voice, and control information with requirements more stringent than voice delay requirements is studied. Three different transmission alternatives are considered. In the first case all three types of information are transmitted in packets over an FDDI network. In the second case voice is carried by the isochronous slots of FDDI-II. In the third case the isochronous slots of FDDI-II carry both the voice and control information. A throughput and delay analysis is presented and used to evaluate the effect of various system parameters on the performance of both networks as well as to compare their throughput and delay performance.<>