Copyright © 2006 The Institute of Electronics, Information and Communication Engineers
Regular Section -- Papers -- Internet |
DSRED: A New Queue Management Scheme for the Next Generation Internet
1 The author is with New Focus Inc., San Jose, CA, 95138 USA. E-mail: atiq{at}ou.edu, 2 The author is with School of Computer Science, University of Oklahoma, Norman, OK 73019-6151, USA.
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.
Key Words: active queue management, routers, Internet, simulation, performance evaluation
Manuscript received February 18, 2005. Manuscript revised July 27, 2005.