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IEICE TRANSACTIONS on Information

Hybrid Hierarchical Overlay Routing (Hyho): Towards Minimal Overlay Dilation

Noriyuki TAKAHASHI, Jonathan M. SMITH

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Summary :

Many P2P lookup services based on distributed hash tables (DHT) have appeared recently. These schemes are built upon overlay networks and ignore distance to the target resources. As a result, P2P lookups often suffer from unnecessarily long routes in the underlay network, which we call overlay dilation. This paper proposes a new scheme for resource routing, called hybrid hierarchical overlay routing, dubbed Hyho. We introduce distance-weighted Bloom filters (dwBFs) as a concise representation of routing information for scattered resources in overlay networks. To further reduce the size of Bloom filters, so that they are linear in the number of distinct resources, Hyho splits overlay networks in accordance with DHT, where each subnetwork has a smaller set of resources and spans the entire network thinly. As a result, Hyho constructs a hierarchical overlay network and routes requests accordingly. Simulation results show that Hyho can reduce overlay dilation to one half that yielded by the Chord lookup service.

Publication
IEICE TRANSACTIONS on Information Vol.E87-D No.12 pp.2586-2593
Publication Date
2004/12/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Section on New Technologies and their Applications of the Internet)
Category
Protocols, Applications and Services

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