Performance degradation in heterogeneous local computer network interconnections

A system made up of two dissimilar local area networks is modeled, and analytical results are developed for transfer delay performance using the internet gateway protocols. Three scenarios resulting from combinations of CSMA/CD (carrier sense multiple access with collision detection), token ring, and token bus protocols are analyzed and graphically presented. Results on the average transfer delay for these three different scenarios are presented and compared with the results for the homogeneous case. The results of the calculation suggest that the IP (internet protocol) gateway delay becomes increasingly significant as the utilization and the percentage of internetwork traffic go up