Impact Of P2P On Networks

Passmore, David
May 2005
Business Communications Review;May2005, Vol. 35 Issue 5, p14
Trade Publication
The article focuses on the impact of peer-to-peer (P2P) technology on computer networks. P2P principles can improve application performance, resilience and scalability. But what may be just as important is how networks must change to accommodate rapidly growing P2P application flows. People downloading a file aren't using their upstream bandwidth except to send occasional acknowledgements to the server. Newer P2P file sharing applications like BitTorrent exploit this fact by breaking down large files into very small file fragments, and by forcing users who want to download the file to simultaneously upload their received fragments to other users. Unlike client/server, where all users depend on a single server for download, each BitTorrent user may simultaneously receive fragments from dozens of other users. In this more efficient system, everyone soon receives all fragments. Besides using everyone's upstream bandwidth. Another big advantage is the way the system scales. Other benefits of any P2P system are resiliency and scalability.


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