multicasting in the internet. in the beginning there was the internet…
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Multicasting in the InternetMulticasting 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 KamisinskiMorten Lindenberg
Vera Goebel
Thomas Plagemann
Ovidiu Valentin Drugan
Matija PuzarStein 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 GroupHi,I would like to inviteyou to the presentationon the IP Multicast issues.
……and the resulting types of trees and the resulting types of trees differ very…differ very…
We want the multicast that We want the multicast that achieves enormous scalability!!achieves enormous scalability!!
Scalability was like the Holy Grail for multicast community.
The first multicast service model: The first multicast service model: Any Source Multicast Any Source Multicast (ASM)(ASM)
DMMS Group
The first multicast service model: The first multicast service model: Any Source Multicast Any Source Multicast (ASM)(ASM)
DMMS Group
Limited number of channels which were not allocated…
… … it lacked congestion control it lacked congestion control mechanisms…mechanisms…
……it was open…it was open…
… and it needed full deployment to work.
So, IP Multicast evolved…So, IP Multicast evolved…
… and after 10 years of non-random mutations
Single Source Multicast
But still aiming at the enormous But still aiming at the enormous scalability.scalability.
What is IP Multicast?
DVMRPPIM-DM
PIM-SM
MOSPF
MSDP
MLDv2
IGPMv2
IGPMv3
MBGP
BGP4+
MLDv3
AMT
PIM-SSM
PGM
MAAS
MADCAP
MASCIGMP Snooping
CGMPRGMP
Inherited problems of Inherited problems of the multicast architecturethe multicast architecture
Did IP Multicast fail?Did IP Multicast fail?