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Application-Level Multicast Transmission Techniques Over The Internet

Ayman El-Sayed 1
1 PLANETE - Protocols and applications for the Internet
Inria Grenoble - Rhône-Alpes, CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : In this dissertation, we introduce a proposal for building an alternative group communication service that shifts the multicast support from core routers to end-systems. Our proposal, called Host Based Multicast (HBM), operates at application-level and provides an efficient multi-point data distribution service for one-to-many or many-to-many communications.
With this approach end-hosts (running the application), dedicated servers and/or border routers automatically self-organize into an overlay distribution topology where data is disseminated. This overlay topology can be composed of both unicast connections and native
multicast islands (e.g. within each site). Therefore it offers a group communication service to all hosts, even those located in a site that does not have access for any reason, to native multicast routing.
HBM is a centralized solution, where everything, including group membership management and overlay topology creation, is under the control of a single Rendez-vous Point (RP). This thesis focuses on three key aspects: scalability, robustness, and security. The scalability
can be largely improved, with a few simple HBM protocol parameter adjustments like the frequency and size of the control messages exchanged. Robustness is another important practical issue, and we introduce packet loss reduction techniques, like the addition of redundant
virtual links that avoid topology partition in case of transit node failures. Finally we investigate the use of HBM to build a fully secure but efficient group communication service between several sites using an IPSec VPN environment. We show that HBM and the IPSec
VPN environment naturally fit with one-another and lead to the concept of Virtual Private Routed Network (VPRN).
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Ayman El-Sayed. Application-Level Multicast Transmission Techniques Over The Internet. Networking and Internet Architecture [cs.NI]. Institut National Polytechnique de Grenoble, 2004. English. ⟨tel-00405485⟩

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