DSRED: improving performance of active queue management over heterogeneous networks

Abstract

Studies have shown that the IETF recommended active queue management scheme, random early detection (RED) suffers from low throughput, large delay/jitter, and induces instability in networks. To improve the throughput and delay of the RED gateways, double slope RED (DSRED) was proposed and was shown to outperform RED in a homogeneous TCP/IP network. The objective of this paper is to evaluate DSRED in a heterogeneous network environment. Simulation results have shown that, in a heterogeneous network, DSRED results in better performance than RED in terms of throughput and queuing delay.