On the effectiveness of priorities in token ring for multimedia traffic

The suitability of IEEE 802.5 token ring LANs for the transport of multimedia traffic is examined. The token ring priority mechanisms and end-station queuing policies are studied in order to understand their effect on the delay characteristics of multimedia traffic. The multimedia traffic is modeled as isochronous data streams. Simulation results are presented to illustrate the access and queuing delays under various load conditions and traffic mixes.