Abstract
ULg Research Unit in Networking RUN
Abstract


Autonomous Reflectors over Active Networks: Towards Seamless Group Communication

L. Yamamoto1 and G. Leduc1

1 Research unit in Networking, EECS department, University of Liège, Belgium

(2001)

Abstract

We present a reflector service that seeks to maintain application-level connectivity in the presence of network-level multicast failures. The service is based on the dynamic deployment of autonomous reflectors modelled as mobile agents on top of an active network infrastructure. It is able to repair multicast tree failures by building a self-organising tree of reflectors, which will be connected to each other via unicast. The scheme is decentralised and takes into account node and link resources to find agent locations that lead to low cost tree configurations. We focus on the basic decision mechanisms related to code mobility during the tree construction and destruction phases, namely: cloning, migration, merging and termination. We show some preliminary simulation results that confirm the viability of the approach and settle directions for further research.

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