T. Ziegler, S. Fdida, C. Brandauer, A quantitative Model of RED with TCP Traffic, IEEE/ACM IWQoS, Karlsruhe, May 2001.  Home/Search   Document Not in Database   Summary   Related Articles

....factor of the EWMA method is denoted as . As a reminder the RED function is depicted in figure 1. Since the publishing of [5] significant research has been devoted to the analysis of the dynamics of RED in interaction with TCP congestion control. Several papers, 3] 4] 5] 10] [12], introduce models aimed at finding an appropriate set of the parameters. The goal of a proper RED adjustment is to maintain the average queue size between and at low oscillations and in turn help avoid forced drops (i.e. either the instantaneous queue size exceeds the buffer ....

.... ) A0 2 . Figure 3 shows in both simulations the RED queue size over time with B(10 flows (low load scenario) For the simulation in the left graph the maximum drop probability is set to DCE(F0HGI;72 , a commonly adjusted value for medium sized load ranges as described in [12]. For the low load scenario, this results in an average queue size periodically hitting the abscissa, which stands for significant under utilization. Recurrent under utilization means that in most cases the variance of the queueing delay becomes large (it obviously increases with the value ) ....

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T. Ziegler, S. Fdida, C. Brandauer, A quantitative Model of RED with TCP Traffic, IEEE/ACM IWQoS, Karlsruhe, May 2001.

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