Optimizing Internet traffic: a first tool to explore the return paths at the scale of the net
The knowledge of Internet paths allows operators and scientists to better understand its functioning and to solve various problems. With his collaborators, Kévin Vermeulen, a researcher in the SARA team of LAAS-CNRS, has designed, implemented and evaluated the first open solution capable of exploring the return paths on a large scale. These results are presented at the ACM SIGCOMM Internet Measurement Conference (IMC) on October 25, 2022.
You perform an online search by typing your query into the web browser, confident that the answer will automatically appear within seconds. Unfortunately, you are "unable to display the page". Where is the problem? Probably between your computer and the server of the service used. Indeed, your request and its answer pass from operator to operator across the web. Knowing these paths allows you to limit access problems that can occur anywhere on the route between the client and the server. Until now, tools such as Traceroute have been able to address this issue. However, they only allow you to see the outbound paths, for example between a server and a client. "It is necessary to know the reverse paths, because the paths can be asymmetrical. In other words, the outward and return paths do not follow the same route" explains Kévin Vermeulen.
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