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Statistical characterization of wide-area IP traffic

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4 Author(s)
Lucas, M.T. ; Dept. of Comput. Sci., Virginia Univ., Charlottesville, VA, USA ; Wrege, D.E. ; Dempsey, B.J. ; Weaver, A.C.

A background traffic model is fundamental to packet-level network simulation since the background traffic impacts packet drop rates, queueing delays, end-to-end delay variation, and also determines available network bandwidth. In this paper, we present a statistical characterization of wide-area IP traffic based on 90-minute traces taken from a week-long trace of packets exchanged between a large campus network a state wide educational network, and a large Internet service provider. The results of this analysis can be used to provide a basis for modelling background load in simulations of wide-area packet-switched networks such as the Internet, contribute to understanding the fractal behavior of wide-area network utilization, and provide a benchmark to evaluate the accuracy of existing traffic models. The key findings of our study include the following: (1) both the aggregate packet stream and its component substreams exhibit significant long-range dependencies in agreement with other traffic studies. (2) the empirical probability distributions of packet arrivals are log-normally distributed. (3) packet sizes exhibit only short-term correlations and (4) the packet size distribution and correlation structure are independent from both network utilization and time of day

Published in:

Computer Communications and Networks, 1997. Proceedings., Sixth International Conference on

Date of Conference:

22-25 Sep 1997