Abstract

As people change the habit of using the Internet, network technology has become matured. Unlike client-server, peer-to-peer (P2P) technology increases the convenience of people’s daily life. The routing efficiency of P2P system without centralized server always is an important issue. This paper proposes a virtual peer mechanism of P2P overlay network based on the arrangement graph to make exiting physical peers be agent peers for vacant peers. Each vacant peer is managed by a physical peer who often is its neighbor, and the vacant peer is called virtual peer. Physical peers and virtual peers make the arrangement graph full, and make the number of routing hops can be limited within the diameter of the arrangement graph. From experimental results, this system can keep routing efficiency no matter the number of peers and do not increase system overhead.

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