Performance analysis of finite output-buffered multistage ATM switching fabrics

A new and accurate Markov chain model for evaluating the performance of multistage ATM switching fabrics with 2×2 finite output-buffered switching elements is proposed. By comparing the results obtained from the proposed model, existing models, and simulations, it has been shown that the proposed model is much more accurate than existing models in the presence of a non-uniform traffic in the switch. The results from existing models are unsatisfactory in the presence of an increased blocking in the switch arising due to a non-uniform traffic in the switch. On the contrary, the proposed model is very robust even under severe blocking inside the switch