A Review on How ISPs do Traffic Engineering of P2P Applications
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Resumen
Resumen: Los sistemas P2P y los ISPs dependen entre sí para poder ofrecer la mejor experiencia de acceso a contenido al usuario final. Sin embargo, los sistemas P2P no poseen información sobre lo que está pasando en las redes subyacentes, de manera que estos sistemas tienen que cooperar con los ISPs para superar la ineficiencia inherente del enrutamiento P2P. Al parecer esta cooperación tiene que ver con un objetivo principal: localizar tráfico en las redes de los ISPs para aprovechar las características demográficas de distribución de contenido. Este trabajo trata de resumir algunos enfoques, aplicados a las redes P2P más populares, que intentan aprovechar los beneficios de las características demográficas del tráfico P2P, por medio de caching , modificaciones en los protocolos P2P, servicios intermedios gestionados por el ISP, e incluso acuerdos de peering entre ISPs locales.
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Abstract: P2P systems and ISPs depend on each other to give the best accessing content experience for the end user. However, P2P systems have not information about what is happening in the underlay networks, so these systems have to cooperate with ISPs in order to overcome the inherent inefficiency of P2P routing. It seems that this cooperation has to do with a main objective: localizing traffic within the ISPs networks to take advantage of content distribution demographic characteristics. This work summarizes some approaches, applied to the most popular P2P networks, which try to explode the benefits of demographic characteristics of P2P traffic, by means of caching, modifications on the P2P protocols, intermediate services managed by the ISP and even peering agreements between local ISPs.
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