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1 CAIDA - Center for Applied Internet Data Analysis San Diego 2 Georgia Institute of Technology Georgia Tech

Abstract : There is much interest in studying the structure and evolution of the Internet at the Autonomous System AS level. However, limitations of public data sources in detecting settlement-free peering links meant that prior work focused almost exclusively on transit links. In this work, we explore the possibility of studying the full connectivity of a small set of ASes, which we call usable monitors. Usable monitors, while a subset of the ASes that provide BGP feeds to Routeviews-RIPE collectors, are better suited to an evolutionary study than other ASes.We propose CMON, an algorithm to classify the links of usable monitors as transit or non-transit. We classify usable monitors as transit providers large and small, content producers, content consumers and education-research networks. We highlight key differences in the evolution of connectivity of usable monitors, and measure transitions between different relationships for the same pair of ASes.

Keywords : Internet topology Autonomous Systems Peering Economics

Autor: Amogh Dhamdhere - Himalatha Cherukuru - Constantine Dovrolis - Kc Claffy -



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