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Title : A Distributed Transport Function in P2PSIP using HIP for Multi-Hop Overlay Routing
Author(s) : E. Cooper, et al.
Filename : draft-matthews-p2psip-hip-hop-00.txt
Pages : 26
Date : 2007-6-18
This document examines a P2PSIP architecture where the peer-to-peer
(P2P) layer is separate from and lies below the SIP layer. We
discuss the functions of the P2P layer in such an architecture, and
focus in on the Distributed Transport function - the function that
allows a peer to exchange messages with any other peer in the
overlay, even in the presence of NATs. We list the features that the
Distributed Transport function needs to provide, and observe that the
Host Identity Protocol (HIP) already provides a number of these
features. We then propose extensions to HIP that allow it to provide
the missing features. We discuss how a complete P2PSIP architecture
can be built around HIP, and contrast this approach with other
approaches for implementing a P2P layer. Two of the advantages of
HIP approach are that (a) most existing applications can run in an
overlay without needing any changes and (b) peer mobility and NAT
traversal are handled in a way that is transparent to most
applications.
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