Taser et sabre laser, une petite guerre du carbone

Abstract : Low-carbon economy and low-carbon thinking are concepts that are expanding all over the world. Studies show that the network component accounts for approximately a fifth of IT's total energy consumption. That is an impressive number! Part of this is used for routing and switching IP packets, and another part is used for transporting these packets between different devices. It is the hidden part that the user sees little of and which interests us more particularly. For the network cabling in its offices, LEGI (the Grenoble-based Laboratory of Geophysical and Industrial Fluid Flows) uses a fibre optic topology called FTTO (Fibre To The Office) as well as an older copper (electrical) topology. Based on this experience, we would like to share our understanding of the ecological impact of these two technologies in terms of their carbon footprints: - over their lifecycle: extraction of raw materials, mineral purification, shaping in extruders, service life of the material, recycling after use; - of using them: power loss in relation to distances and throughput. The increase in throughput and frequency is a concrete example in terms of energy problems. In a different context, the distribution of Power over Ethernet throughout offices can also be another energy headache. Furthermore, data is available on the carbon footprint of copper and silica extraction as well as on their shaping processes. The aim of our poster is to establish an area for discussion and debate around sustainable development in the deployment of end networks. We will see who wins the war!
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Contributor : Gabriel Moreau <>
Submitted on : Wednesday, December 20, 2017 - 3:05:19 PM
Last modification on : Thursday, January 3, 2019 - 4:30:09 PM


Distributed under a Creative Commons CC0 - Public Domain Dedication 4.0 International License


  • HAL Id : hal-01669063, version 1




Gabriel Moreau, Géraud Danzel d'Aumont. Taser et sabre laser, une petite guerre du carbone. Congrès JRES : Les Journées Réseaux de l'Enseignement et de la Recherche, Nov 2017, Nantes, France. 〈https://www.jres.org/〉. 〈hal-01669063〉



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