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IP packet prioritiser for low bandwidth links
2000 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Mongolia is a country where the development of the digital infrastructure started very recently. It is a large country with almost no installed fibre optics and a very old and unreliable telephone network. Datacom Co., Ltd. is the largest company providing computer networks in Mongolia. They have already connected the country to the Internet via a satellite link and they are providing Internet access to companies, universities, the government and private people. They are currently working on connecting all the country provinces to the Internet via satellite links. They also aim to provide phone and fax services in these areas. To provide phone service over a satellite link using the Internet protocol, Datacom needs some kind of bandwidth allocation and bandwidth guarantee system to provide the customers with a service of acceptable quality. The purpose of this thesis project was to design an IP bandwidth allocation system suitable for Datacom and Mongolia. Such systems can already be bought from several different companies, but what Datacom needs is a low-cost and efficient system which suits its specific needs. The result is a small IP packet prioritiser which can be installed in almost any IBM PC compatible computer running the Linux operating system. This package can be used to prioritise not only IP voice applications, but all different kinds of IP traffic. Two user programs to manage the system have also been implemented: one simple command line application and one with a graphical interface which can be used over a network. Test shows that the performance of the IP packet prioritiser is good. It makes it possible to control IP traffic over a low bandwidth link. Doing so does not significantly reduce the throughput or increase the delay over the link. Unfortunately, no tests could be done on a real satellite link, but the IP packet prioritiser works fine on a similar network.

Place, publisher, year, edition, pages
Keyword [en]
Technology, bandbreddsbegränsning, bandwidth management
Keyword [sv]
URN: urn:nbn:se:ltu:diva-57187ISRN: LTU-EX--00/043--SELocal ID: ddf10a85-70b5-4a94-8e63-1bd2b1e53979OAI: diva2:1030574
Subject / course
Student thesis, at least 30 credits
Educational program
Civil Engineering programmes 1997-2000, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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