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ThinkMind // International Journal On Advances in Telecommunications, volume 3, numbers 3 and 4, 2010 // View article tele_v3_n34_2010_1


CARMA: A Distance Estimation Method for Internet Nodes and its Usage in P2P Networks

Authors:
Gennadiy Poryev
Hermann Schloss
Rainer Oechsle

Keywords: Internet, Topology, Distance Estimation Method

Abstract:
Topological distance estimation is the key to the efficiency in distributed systems and peer-to-peer networks. Contrary to many existing or proposed methods, which usually require the exchange of messages between the nodes, we have developed a metric, which is computed purely within a node, and which is based on the preloaded and precomputed topological structure of the Internet. Many distributed systems and applications may benefit from this metric, since it estimates the topological distance between any arbitrary pair of nodes in the Internet. As a proof of concept we have first shown the correlation between our metric and a few established distance indicators, such as hop count or round trip time of a message. Then, we employed this metric as an edge weight representing the connection quality between two network nodes and we used it for the construction of a multicast overlay network based on a Minimum Spanning Tree approximation. According to the evaluation results, this metric corresponds fairly well to the actual measured distances. By using this metric, our approach minimizes communication costs and avoids extraneous communication needed for latency measurements.

Pages: 1 to 15

Copyright: Copyright (c) to authors, 2010. Used with permission.

Publication date: April 6, 2011

Published in: journal

ISSN: 1942-2601

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