ANALYSIS AND SIMULATION OF MULTIPLE-RING TOKEN NETWORKS

The paper presents an extended analysis for multiple token ring networ ks given by Yang et al. The authors generalised the results in two way s: (a) for any load condition, i.e. for very lightly loaded networks t o heavily loaded networks; (b) for any packet size, i.e. very small pa cket size (only a few bytes long) to very large packet size (several K -bytes long). The authors also obtain the optimum number of rings for various configurations to achieve minimum mean transfer time. The resu lts show that the best ratio of number of rings to number of stations is 0.2 to 0.5, but the exact number varies nonlinearly with respect to load.