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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: multicast seen as equivalent of caching packets
Sorry; it was my assertion in this tread -:). Through it change nothing... Why don't start fron the replication/reflection, then go to the short-time-caching, may be to the long-time-caching, and then only to the multicasting. Those who is playing around multicasting now looks amazing - they build a complex, twisted routing schema with the PIM, etc etc to deliver usially ONE data stream to the ONE customer -:). May be, to the two customers. And then ask _why don't another want to play with them_. This was the issue - on the first stage, simple packet replication is just the same as multicasting, but is much simpler to inplement globally. And this is in fact caching with the zero time-to-expire. Alex. > If you think about it briefly, Vadim's assertion that "packet caching" > and "multicast distribution" are indistinguishable if the packets are > retained in the cache for essentially 0 time. > > I think Vadim's point is that accepting the validity of the > multicasting = caching assertion allows one to consider doing > a better job of reducing the consumption of network resources > by replayable content than the use of native multicast does. Just right. > (This is perhaps why Peter Lothberg and company have been working > fairly hard at enabling the inflation of the use of Internet multicast, > since the deployment costs of native IP multicast are so small that > the ultimate non-scalability of IP multicasting (or multicasting > in general if you accept Vadim's argument) does not prevent people > from turning on PIM/SM+mBGP+MSDP. First you roll (excuse the pun) out Compare the multicsting listeners and RealVideo or RealAudio or MP3 listeners; first are 1% of the last. What multicast deploying are you talking about, it's a myth yet. Aleksei Roudnev, Network Operations Center, Relcom, Moscow (+7 095) 194-19-95 (Network Operations Center Hot Line),(+7 095) 230-41-41, N 13729 (pager) (+7 095) 196-72-12 (Support), (+7 095) 194-33-28 (Fax)
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