Supervision des réseaux et services pair à pair : application à la plate-forme JXTA

The deployement of P2P applications in environments where the quality of offered services must be ensured requires the integration of management mechanisms. In this paper, we present a management infrastructure for the JXTA P2P framework. It relies on a generic management information model for P2P networks and services we designed previously. We show the way we instantiated this model through a manager-agent model which makes it possible to get a global view of elements of a JXTA P2P community as well as its evolution.Le déploiement d'applications pair à pair (P2P) dans des environnements où la qualité de service doit être garantie passe par l'intégration de mécanismes de supervision. Nous présentons ici une infrastructure de supervision pour la plate-forme JXTA. Celle-ci repose sur un modèle de l'information de gestion générique pour la gestion des réseaux et services P2P que nous avons conçu préalablement. Nous présentons la manière dont nous avons instancié ce modèle à travers une architecture de supervision reposant sur un modèle gestionnaire/agent qui nous permet d'obtenir une vue globale des éléments d'une communauté P2P JXTA ainsi que de son évolution

A framework for the dynamic management of Peer-to-Peer overlays

Peer-to-Peer (P2P) applications have been associated with inefficient operation, interference with other network services and large operational costs for network providers. This thesis presents a framework which can help ISPs address these issues by means of intelligent management of peer behaviour. The proposed approach involves limited control of P2P overlays without interfering with the fundamental characteristics of peer autonomy and decentralised operation. At the core of the management framework lays the Active Virtual Peer (AVP). Essentially intelligent peers operated by the network providers, the AVPs interact with the overlay from within, minimising redundant or inefficient traffic, enhancing overlay stability and facilitating the efficient and balanced use of available peer and network resources. They offer an “insider‟s” view of the overlay and permit the management of P2P functions in a compatible and non-intrusive manner. AVPs can support multiple P2P protocols and coordinate to perform functions collectively. To account for the multi-faceted nature of P2P applications and allow the incorporation of modern techniques and protocols as they appear, the framework is based on a modular architecture. Core modules for overlay control and transit traffic minimisation are presented. Towards the latter, a number of suitable P2P content caching strategies are proposed. Using a purpose-built P2P network simulator and small-scale experiments, it is demonstrated that the introduction of AVPs inside the network can significantly reduce inter-AS traffic, minimise costly multi-hop flows, increase overlay stability and load-balancing and offer improved peer transfer performance

Implementation of adaptive control for p2p overlays

Abstract. Peer-to-peer networking enjoys euphoric support and fierce resistance simultaneously, and for the same reasons. It presents a model where decentralization and lack of structure, hierarchy and control are promoted. Although significant research is carried out to tackle individual issues arising from that paradigm, there has been no obvious approach for evening out differences on a more general basis. In this paper we introduce a framework and provide implementation techniques for such an approach. The framework aims at integrating partial techniques that solve individual problems and has been designed for flexibility. The integrated approach we are proposing includes forming and maintaining of peer-to-peer overlays, controlling the underlying topology being formed, limiting the signaling traffic being generated and optimizing the payload traffic. 1

Implementation of Adaptive Control for P2P Overlays

Peer-to-peer networking enjoys euphoric support and fierce resistance simultaneously, and for the same reasons. It presents a model where decentralization and lack of structure, hierarchy and control are promoted. Although significant research is carried out to tackle individual issues arising from that paradigm, there has been no obvious approach for evening out differences on a more general basis. In this paper we introduce a framework and provide implementation techniques for such an approach. The framework aims at integrating partial techniques that solve individual problems and has been designed for flexibility. The integrated approach we are proposing includes forming and maintaining of peer-to-peer overlays, controlling the underlying topology being formed, limiting the signaling traffic being generated and optimizing the payload traffic