標題: | On-the-fly TCP path selection algorithm in access link load balancing |
作者: | Lin, Ying-Dar Tsao, Shih-Chiang Leong, Un-Pio 資訊工程學系 Department of Computer Science |
關鍵字: | path selection;RTT;TCP three-way handshaking |
公開日期: | 15-一月-2007 |
摘要: | Many enterprises install multiple access links for fault tolerance or bandwidth enlargement. Dispatching connections through good links is the ultimate goal in utilizing multiple access links. The traditional dispatching method is only based on the condition of the access links to ISPs. It may achieve fair utilization on the access links but poor performance on connection throughput. In this work, we propose a novel approach to maximize the per-connection end-to-end throughput by the on-the-fly round trip time (RTT) probing mechanism. The end-to-end RTTs through all possible links are probed by duplicating the SYN packet during the three-way handshaking stage of a TCP connection. The experiment results show that the ratio to choose the best outgoing access link is 79% on the average. If the second best link is chosen, it is usually very close to the best, thus averagely achieving 94% of the maximum possible throughput. The ratio of the traditional round-robin (RR) algorithm is only 35%, and the link selected by RR algorithm could provide 69% of throughput. (c) 2006 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.comcom.2006.09.001 http://hdl.handle.net/11536/11226 |
ISSN: | 0140-3664 |
DOI: | 10.1016/j.comcom.2006.09.001 |
期刊: | COMPUTER COMMUNICATIONS |
Volume: | 30 |
Issue: | 2 |
起始頁: | 351 |
結束頁: | 357 |
顯示於類別: | 期刊論文 |