Multicasting in the Internet

In the beginning there was the Internet…

…and the Internet was multicast-less

Growing trees in the Internet

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

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

…and the resulting types of trees differ very…

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

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

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

Limited number of channels which were not allocated…

… it lacked congestion control mechanisms…

…it was open…

… and it needed full deployment to work.

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

Single Source Multicast

But still aiming at the enormous scalability.

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

Inherited problems of the multicast architecture Inherited problems of the multicast architecture

Did IP Multicast fail?