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Multicasting in the Internet

This presentation explores the evolution of IP Multicasting, focusing on its challenges and solutions. Initially, the Internet lacked multicasting capabilities, but the need for scalability prompted the creation of multicast groups. The presentation delves into the first multicast service model—Any Source Multicast (ASM)—and its limitations, leading to the development of Single Source Multicast (SSM). Key concepts such as IGMP Snooping, PIM-SM, and other multicast protocols are discussed. Join us to discover how multicast can achieve enormous scalability in internet communications.

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Multicasting in the Internet

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Presentation Transcript

  1. Multicasting in the Internet

  2. In the beginning there was the Internet…

  3. …and the Internet was multicast-less

  4. Growing trees in the Internet

  5. Why not to write all the destination into one packet? Hi… Ellen Munthe-Kaas Piotr Kamisinski Sebastian Morten Lindenberg Hoang Viet Nguyen Matija Puzar Kennedy Samuel Kamwendo Vera Goebel Ovidiu Valentin Drugan Stein Kristiansen Thomas Plagemann Kjell Åge Bringsrud Daniel Rodríguez Fernández Jarle Søberg Piotr Srebrny

  6. Maybe, let’s create groups in the Internet… Hi, I would like to invite you to the presentation on the IP Multicast issues. DMMS Group

  7. …and the resulting types of trees differ very…

  8. We want the multicast that achieves enormous scalability!! Scalability was like the Holy Grail for multicast community.

  9. The first multicast service model: Any Source Multicast (ASM) DMMS Group

  10. The first multicast service model: Any Source Multicast (ASM) DMMS Group

  11. Limited number of channels which were not allocated…

  12. … it lacked congestion control mechanisms…

  13. …it was open…

  14. … and it needed full deployment to work.

  15. So, IP Multicast evolved… … and after 10 years of non-random mutations

  16. Single Source Multicast

  17. But still aiming at the enormous scalability.

  18. What is IP Multicast? IGMP Snooping MAAS MASC CGMP MBGP RGMP MSDP MADCAP BGP4+ AMT PGM MOSPF MLDv3 PIM-SM PIM-SSM IGPMv2 MLDv2 PIM-DM DVMRP IGPMv3

  19. Inherited problems of the multicast architecture

  20. Did IP Multicast fail?

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