Traffic shaping in BitTorrent systems by centralized hierarchical peer-node assignment

Abstract

Peer-to-peer (P2P) file sharing system such as Bit-Torrent performs better than traditional client-server system in "flash-crowd" scenario taking advantage of "perpendicular" bandwidth between peer nodes. However large amount of back-bone bandwidth in the Internet is consumed by these ubiquitous P2P connections. In this paper, we propose Centralized Hierarchical Peer-node Assignment (CHPA) to globally manage P2P traffic by intentionally set up connections within local area network. Experiment result shows that: in our experiment environment, CHPA can achieve higher proportion of local area network traffic while download time of BT is not apparently affected. ©2008 IEEE.