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Title

Evaluation of FAST TCP on low-speed DOCSIS-based access networks

Author(s)

Andrew, Lachlan L. H.;  Atov, Irene;  Kennedy, David;  Wydrowski, Bartek

Abstract

There is strong evidence that the efficiency of the Internet is limited by its existing TCP congestion control system. A replacement, FAST, has been shown to improve performance in high-speed networks. In order to achieve widespread acceptance and standardisation, it must also be tested in environments more typical of the existing Internet. This paper experimentally evaluates the performance of FAST over a typical access link, with bandwidths of around 0.5-3 Mbps. Links both using the DOCSIS cable modem medium access control (MAC) protocol and simple low rate links were investigated. It is shown that the random delay introduced by MAC protocol of the cable modem does not appear to interfere significantly with FAST’s ability to set the congestion window size to its target. However, the cable modem does appear to introduce consistent additional delays when the link is highly, but not fully, utilised. These unexplained delays mean that a larger congestion window is required, and must be taken into account when setting FAST’s parameters, notably the target queue size, alpha.

Publication type

Conference paper

Research centre

Swinburne University of Technology. Faculty of Information and Communication Technologies. Centre for Advanced Internet Architectures

Source

Proceedings of the 2005 IEEE Region 10 Annual International Conference (TENCON 2005), Melbourne, Victoria, Australia, 21-24 November 2005, pp. 1-6

Publication year

2005

Keyword(s)

Access protocols;  Cable modem;  Congestion control system;  Data over cable service interface specification;  DOCSIS-based access networks;  FAST TCP;  Internet;  MAC;  Medium access control protocol;  Radio access networks;  Random delay;  TCP;  Telecommunication congestion control;  Transmission control protocol;  Transport protocols

Publisher

IEEE

ISBN

9780780393110, 0780393120

Publisher URL

http://dx.doi.org/10.1109/TENCON.2005.300974

Copyright

Copyright © 2005 IEEE. Paper reproduced here in accordance with the copyright policy of the publisher.

Full text

Peer reviewed