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As the Internet becomes increasingly heterogeneous, the issue of congestionavoidance and control becomes ever more important. And the queue length,end-to-end delays and link utilization is some of the important things in termof congestion avoidance and control mechanisms. In this work we continue tostudy the performances of the New-AIMD (Additive Increase MultiplicativeDecrease) mechanism as one of the core protocols for TCP congestion avoidanceand control algorithm, we want to evaluate the effect of using the AIMDalgorithm after developing it to find a new approach, as we called it theNew-AIMD algorithm to measure the Queue length, delay and bottleneck linkutilization, and use the NCTUns simulator to get the results after make themodification for the mechanism. And we will use the Droptail mechanism as theactive queue management mechanism (AQM) in the bottleneck router. Afterimplementation of our new approach with different number of flows, we expectthe delay will less when we measure the delay dependent on the throughput forall the system, and also we expect to get end-to-end delay less. And we willmeasure the second type of delay a (queuing delay), as we shown in the figure 1bellow. Also we will measure the bottleneck link utilization, and we expect toget high utilization for bottleneck link with using this mechanism, and avoidthe collisions in the link.

Evaluation Study for Delay and Link Utilization with the New-Additive Increase Multiplicative Decrease Congestion Avoidance and Control Algorithm