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Real-time traffic measurement on MAGNET II

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3 Author(s)
Lazar, A.A. ; Dept. of Electr. Eng., Columbia Univ., New York, NY, USA ; Pacifici, G. ; White, J.S.

Real-time traffic measurements on MAGNET II, an integrated network testbed based on asynchronous time sharing, are reported. The quality of service is evaluated by monitoring the buffer-occupancy distribution, the packet time-delay distribution, the packet loss, and the gap distribution of the consecutively lost packets. The experiments show that both time-delay and buffer-occupancy distributions of multiplexed video sources display a marked bimodal behavior, which does not seem to depend on the buffer size. The reliance of the network designer on traffic sources that do not exhibit substantial correlations can lead to implementations with serious congestion problems. For asynchronous-time-sharing-based networks with different traffic classes, the impact of a traffic class on the performance of the other classes tends to be diminished when compared to single-class-based asynchronous transfer mode (ATM) networks

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Selected Areas in Communications, IEEE Journal on  (Volume:8 ,  Issue: 3 )