A Dependable Global Location Service using Rendezvous on Hierarchic Distributed Hash Tables

Authors:
J. Risson;S. Qazi;T. Moors;A. Harwood
Affiliations:
University of New South Wales, Australia;University of New South Wales, Australia;University of New South Wales, Australia;2University of Melbourne, Australia
Venue:
ICNICONSMCL '06 Proceedings of the International Conference on Networking, International Conference on Systems and International Conference on Mobile Communications and Learning Technologies
Year:
2006

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Investigating generic network location service based on dht technology

Proceedings of the 2008 international workshop on Software Engineering in east and south europe

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Abstract

A location service is the part of a naming architecture that maps identifiers to network addresses. Ideally, the identifiers are globally unique, persistent and semantic-free. It has been acknowledged that Distributed Hash Tables (DHTs) enable, for the first time, the use of semantic-free identifiers in massive, global networks. We argue that hierarchy is essential for dependability in massive, geographically distributed DHTs. Existing hierarchic DHTs embed location information in identifiers. Consequently, if identifiers move between DHTs in the hierarchy, then the changes always propagate to the root DHT. This Location Information Plane (LIP) design is the first hierarchic DHT that contains "moves and changes" within the lower layers of the hierarchy. It protects the root DHT using the rendezvous abstraction. We show how it supports global internet telephony networks based on the Session Initiation Protocol (SIP).