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On Coverage Bounds Of Unstructured Peer-To-Peer Networks

Author

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  • JOYDEEP CHANDRA

    (Department of Computer Science and Engineering, Indian Institute of Technology, Kharagpur, India)

  • NILOY GANGULY

    (Department of Computer Science and Engineering, Indian Institute of Technology, Kharagpur, India)

Abstract

In this paper, we develop methods to estimate the network coverage of aTTL-bound query packet undergoing flooding on an unstructured p2p network. The estimation based on the degree distribution of the networks, reveals that the presence of certain cycle-forming edges, that we name as cross and back edges, reduces the coverage of the peers in p2p networks and also generate a large number of redundant messages, thus wasting precious bandwidth. We therefore develop models to estimate the back/cross edge probabilities and the network coverage of the peers in the presence of these back and cross edges. Extensive simulation is done on random, power-law and Gnutella networks to verify the correctness of the model. The results highlight the fact that for real p2p networks, which are large but finite, the percentage of back/cross edges can increase enormously with increasing distance from a source node, thus leading to huge traffic redundancy.

Suggested Citation

  • Joydeep Chandra & Niloy Ganguly, 2011. "On Coverage Bounds Of Unstructured Peer-To-Peer Networks," Advances in Complex Systems (ACS), World Scientific Publishing Co. Pte. Ltd., vol. 14(04), pages 611-633.
  • Handle: RePEc:wsi:acsxxx:v:14:y:2011:i:04:n:s0219525911003141
    DOI: 10.1142/S0219525911003141
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