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A Hybrid Overlay Topology for Wide Area Multicast Sessions

  • Rédouane Benaini
  • Karim Sbata
  • Pierre Vincent
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3262)

Abstract

MPNT (Multicast Proxies NeTwork) is an overlay architecture that was first conceived to provide multicast access to unicast-only users, like TutTelNet distant students. MPNT has been then improved by implementing multimedia access (mainly RTP, RTCP and SIP). MPNT original topology is spanning tree based. It is the most efficient topology in terms of switching delay (no routing) but the global delay variance can be important. To remedy this, we implemented an alternate hypercube-based topology. Indeed, hypercubes have several interesting properties – mainly compactness – that ensure a better scalability. Nevertheless, this logical hypercube optimization is valid provided that interconnecting links are comparable. To adapt the architecture to the network heterogeneity, we implemented thus a hybrid topology exploiting both spanning tree and hypercube advantages.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Rédouane Benaini
    • 1
  • Karim Sbata
    • 1
  • Pierre Vincent
    • 1
  1. 1.UMR 5157 Samovar, Département LOgiciels-RéseauxInstitut National des TélécommunicationsEvry CedexFrance

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