A performance study of ring local area networks
Local area networks (LANs) have become one of the most active areas in the field of computer communication. They are perceived as the fundamental technology for office automation, the key to more productive manufacturing plants and the most cost-effective method of improving a company's computing capabilities. In this thesis we concentrate on ring networks which have long been famous for their performance advantages. Specifically, the three most popular rings are studied: the register-insertion, token-passing and slotted rings. The operations of the register-insertion ring are examined under both periodic and aperiodic traffic. In addition, the topology for the register-insertion ring is partitioned to improve its performance. Parameters that are keys to the performance of the token-passing ring are also discussed. As for the slotted ring, findings regarding the optimal number of slots and slot sizes are reported. A comparison based on throughput/delay characteristic of the three rings is then given to illustrate their performance differences.