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Étude de la connectivité Internet de l’île de la Réunion

Abstract : The access to the Internet of the Islands of the Indian Ocean Area has the particularity of using two long submarines cables. The routes have in common to go through one of these links and introduce a delay component that can be significant. The performance of TCP is linked to the state of the route and the delay. In the situation of Reunion Island, how does a protocol having a dependence on delay such as TCP behaves? In this thesis, we propose a study of the Internet in Reunion Island. The work aims to be able to take stock of Internet connectivity. They are oriented on the one hand to characterize the connectivity at the level of the network and on the other hand to translate these characteristics at the level of the transport layer. Thus, the works presented are based on two metrology studies on the Reunion network. The first review aims to characterize the delays and the routes taken from and to the island. This work is based on a platform of measures put in place for this purpose. A road identification tool has been developed to analyze roads to and from Reunion Island. This tool uses a geolocation database built from IP addresses encountered, associated delays and information from the Regional Internet Registries. The analysis of the results shows characteristics specific to the Réunion region. The second metrology study aims to analyze TCP flows. Metrics associated with the observation of the catches of traffic are identified in order to establish the performances of TCP but also the types of traffic entering and leaving the island. Since the volume of the intercepts is important, an analysis tool for efficient and rapid treatments has been developed. The contributions of this thesis are first of all related to the Reunionese context and are extrapolated to the Internet of the Indian Ocean Zone. This thesis is meant to be an element for a reflection with all the actors of the Internet in Reunion Island.
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Réhan Noordally. Étude de la connectivité Internet de l’île de la Réunion. Informatique. Université de la Réunion, 2018. Français. ⟨NNT : 2018LARE0023⟩. ⟨tel-01950686⟩

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