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Distance Metrics in the Internet
B. Huffaker, M. Fomenkov, D. Plummer, D. Moore, and k. claffy, "Distance Metrics in the Internet", in IEEE International Telecommunications Symposium (ITS), Sep 2002, pp. 200--202.
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Distance Metrics in the Internet

Bradley Huffaker
Marina Fomenkov
Daniel Plummer
David Moore
kc claffy

CAIDA, San Diego Supercomputer Center, University of California San Diego

We consider and compare four Internet distance metrics and analyze the predictive power of these metrics in selecting, from a given source, the lowest latency destination from among a candidate set. The four metrics are: IP path length; autonomous system (AS) path length; great circle geographic distance; and previously measured round trip time (RTT). We describe general properties of these four metrics and, using an unprecedented volume of real Internet macroscopic topology and RTT data, compare their correlation with actual RTT to the destination. The new methodology we propose for testing different metrics is suitable for evaluating new distance estimation techniques as they become available.

Keywords: active data analysis, topology
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