One of the major weakness of existing peer-to-peer

networks is that their overlay structures do not match

well with the physical underlying network topology. In

this paper, we present a Geographical Longest Prefix

Matching (Geo-LPM) scheme whereby nodes selforganise

themselves into clusters such that nodes in the

same cluster are close to each other in terms of network

latency and membership. Geo-LPM combines IP

prefixes and network metric measurements to quickly

and easily locate nodes in the geographical space. It is

simple, scalable, self-organising and distributed with no

form of global knowledge