It's a way of sending IP packets to multiple hosts, which fits the "broadcast" paradigm much closer than sending the same stream of data to multiple hosts separately.
Currently I think multicasting video or audio across the 'Net is a long way off, and will remain so for some time - it's not even as if it just needs some investment from a media streaming company like Real Networks - it'll require changes to so many routers that I doubt it'll happen any time soon.
The monkeys have been nattering about this since the early 90's. It has been consistently proven since then that the required uber-l33t routers with huge storage capacity and lots and lots of prediction software are a waste of time and money compared to just making bigger pipes and faster routers.
Binary is of course a tonal language, so properly implemented that yelling match would involve pale codemonkeys warbling Tuvan throatsong tones at one another: a surreal and elegant experience, at least according to the RFCs.
Whatever. Hack this together with Bittorrent and we're off.
Did you see the bandwidth numbers for bt recently? It is, overwhelming, the bulk of all P2P traffic, and just beginning to break out of nerdland and into the general net.
Multicast is never going to happen; it violates the 'dumb network'/'smart client' norm. BT is where this design issue has gone.
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See http://www.nwfusion.com/details/502.html
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Currently I think multicasting video or audio across the 'Net is a long way off, and will remain so for some time - it's not even as if it just needs some investment from a media streaming company like Real Networks - it'll require changes to so many routers that I doubt it'll happen any time soon.
Maybe IPv6 will make a difference...
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(I kind of figured, by the 2002 date on the paper, that maybe it wasn't flying along the tracks towards reality.)
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Did you see the bandwidth numbers for bt recently? It is, overwhelming, the bulk of all P2P traffic, and just beginning to break out of nerdland and into the general net.
Multicast is never going to happen; it violates the 'dumb network'/'smart client' norm. BT is where this design issue has gone.
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