DSRED: A New Queue Management Scheme for the Next Generation Internet


IEICE TRANSACTIONS on Communications   Vol.E89-B   No.3   pp.764-774
Publication Date: 2006/03/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.3.764
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Internet
active queue management,  routers,  Internet,  simulation,  performance evaluation,  

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Random Early Detection (RED), an active queue management scheme, has been recommended by the Internet Engineering Task Force (IETF) for the next generation routers. RED suffers from a number of performance problems, such as low throughput, large delay/jitter, and induces instability in networks. Many of the previous attempts to improve the performance of RED have been based on optimizing the values of the RED parameters. However, results have shown that such optimizations resulted in limited improvement in the performance. In this paper, we propose Double Slope RED (DSRED), a new active queue management scheme to improve the performance of RED. The proposed scheme is based on dynamically changing the slope of the packet drop probability curve as a function of the level of congestion in the buffer. Results show that our proposed scheme results in better performance than original RED.