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Internet packet traffic congestion

In recent years various models for packet traffic in networks have been developed. Most models have used Poisson-like sources which replicate traffic that is voice type. Such sources are said to be short-range-dependent (SRD). The early models of Sole and Valverde demonstrated that long-range-dependent (LRD) traffic could arise in the queue length dynamics at a given node within a communications network even when the sources are LRD free. In this paper we consider the nature of the onset of congestion as load is increased in various types of network (regular, small-world and scale-free) and contrast their congestion behaviour by considering packet latency, or lifetime, indicators.