Approximate analysis of a packet switch with finite output buffering and imbalanced correlated traffic

Abstract

We apply an aggregation method to analyze an output-buffered ATM access switch with correlated imbalanced traffic. Each input port of the switch is assumed to be driven by an interrupted Bernoulli process and every cell in a burst is directed to the same output port. The mean throughput, delay, cell loss probability and transient time until blocking are calculated numerically for a switch driven by an equivalent aggregated source. The approximation to the original system is shown to be excellent by comparing with the numerical solution of small switches and by simulation.<>