Admission control for elastic traffic using RED and/or droptail queues

In this paper we focus on using admission control based on estimation of available bandwidth on a bottleneck link for attempting to reduce congestion and utilize the link capacity. On one hand we have analyzed the performance of admission control under different parameter settings and network traffic load. On the other hand we have thoroughly investigated the interactions between the pre- ventive admission control and reactive queue management algorithms like RED and DropTail in terms of transaction times of data.