A new model for long-range dependent traffic is presented. This model is ba
sed on a switched Poisson process with two states and the sojourn time in e
ach state follows an independent and identical Pareto distribution. It is v
ersatile in capturing the self-similar characteristics of traffic found in
the recent measurements. Its Index of Dispersion for Counts (LDC) is derive
d. It is shown that the LDC increases monotonically and the "log[IDC(t)] ve
rsus log[t]" curve has a slope of (2H - 1), where H is the Hurst parameter.
Example of the representation of measured data traffic using the introduce
d model is given. Performance of a Pareto-modulated Poisson process PMPP/D/
1 queue is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.