Déploiement de service multicast dans des environnements hétérogènes

Fethi Filali 1
1 PLANETE - Protocols and applications for the Internet
Inria Grenoble - Rhône-Alpes, CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : The first part of this dissertation focuses on bandwidth sharing among unicast and multicast flows. We first propose MFQ (Multicast Fair Queuing), a simple and scalable active queue management mechanism that aims to share the bandwidth fairly between competing multicast flows using a pre-defined inter-multicast fairness function. Then, we describe SBQ (Service Based Queuing), a simple scheduler which uses only two queues in order to enhance the network resource sharing between unicast and multicast flows. A novel method for re-marking multicast packets in DiffServ networks based on the number of downstream members is designed and analyzed. The performance of all these schemes is evaluated under a variety of realistic configurations and traffic patterns. Results indicate that MFQ achieves the expected bandwidth sharing between multicast competing flows, while SBQ guarantees a fair allocation of the bandwidth between unicast and multicast flows. Finally, we describe an extension to the multicast service model that enables the counting of group members at the senders as well as at the intermediate routers in the multicast delivery tree. The second part of this dissertation addresses the issue of supporting IP multicast in networks including heterogeneous transmission media. In a first step, we consider the GEO transparent satellites and we determine the adaptations that should be added to the different routing protocols in order to take into account the inherent characteristics of these systems and those of the multicast applications that will profit from them. In a second step, we focus on the deployment of IP multicast over the next-generation of GEO satellites supporting multiple spot-beams and on-board switching technologies. We propose a new encapsulation scheme optimized for IP multicast and we develop two alternative approaches that could be used to enable switching in the on-board satellite processor: the self-routing approach and the label switching. We present SMRP (Satellite Multicast Routing Protocol) that process the PIM-SM messages received by the system entities from terrestrial nodes. At the end of this dissertation, we present and demonstrate the advantages of a novel switching mechanism between the two modes of PIM-SM protocol. This mechanism uses a coordination between the members concerned by the switching to decide whether it is better to switch or not. Furthermore, it could take into account the network and members constraints.
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Fethi Filali. Déploiement de service multicast dans des environnements hétérogènes. Networking and Internet Architecture [cs.NI]. Université de Nice Sophia Antipolis, 2002. English. ⟨tel-00406509⟩

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