NDLI: On-the-fly TCP path selection algorithm in access link load balancing

Content Provider	IEEE Xplore Digital Library
Author	Ying-Dar Lin Shih-Chiang Tsao Un-Pio Leong
Copyright Year	2004
Description	Author affiliation: Dept. of Comput. & Inf. Sci., Nat. Chiao Tung Univ., Hsinchu, Taiwan (Ying-Dar Lin; Shih-Chiang Tsao; Un-Pio Leong)
Abstract	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 of the access links but poor performance on connection throughput. In this work, we propose a new approach to maximize the per-connection end-to-end throughput by the on-the-fly round trip time (RTT) probing mechanism. The RTTs through all possible links are probed by duplicating the SYN packet during the three way handshaking stage of a TCP connection. Combined with the statistical packet loss ratio and the passively collected link metrics, our algorithm can real-time select a link which provides the maximum throughput for the TCP connection. The experiment results show that the accuracy of choosing the best outgoing access link is over 71%. If the second best link is chosen, it is usually very close to the best, thus achieving over 89% of the maximum possible throughput. The average per-connection throughput for our algorithm and the traditional round-robin algorithm is 94% vs. 69%.
Starting Page	856
Ending Page	860
File Size	783200
Page Count	5
File Format	PDF
ISBN	0780387945
DOI	10.1109/GLOCOM.2004.1378081
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Load management Bandwidth Throughput Fault tolerance Dispatching Round robin Information science Broadband communication IP networks Web and internet services
Content Type	Text
Resource Type	Article

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