Bateman, Martin, Bhatti, S, Bigwood, G, Rehunathan, D, Allison, C, Henderson, T and Miras, D
A Comparison of TCP Behaviour at High Speeds Using ns-2 and Linux.
In: CNS2008 - 11th Communications and Networking Simulation Symposium, April 2008, Ottawa, Canada.
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Official URL: http://dx.doi.org/10.1145/1400713.1400718
There is a growing interest in the use of variants of the Transmission Control Protocol (TCP) in high-speed networks. ns-2 has implementations of many of these high-speed TCP variants, as does Linux. ns-2, through an extension, permits the incorporation of Linux TCP code within ns-2 simulations. As these TCP variants become more widely used, users are concerned about how these different variants of TCP might interact in a real network environment -- how fair are these protocol variants to each other (in their use of the available capacity) when sharing the same network. Typically, the answer to this question might be sought through simulation and/or by use of an experimental testbed. So, we compare with TCP NewReno the fairness of the congestion control algorithms for 5 high-speed TCP variants -- BIC, Cubic, Scalable, High-Speed and Hamilton -- on both ns-2 and on an experimental testbed running Linux. In both cases, we use the same TCP code from Linux. We observe some differences between the behaviour of these TCP variants when comparing the testbed results to the results from ns-2, but also note that there is generally good agreement.
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