Jeremy Porter wrote:
QoS outside of a private network is not ever going to be an economic reality, unless an RBOC buys up all the telephone companies or something equally stupid. (Its happened before.)
Um, there are a number of "public" networks delivering QoS today--they just happen to be using layer 2 technology. Many of your telephone calls, in your part of the country and others, are transported by "public" data networks, and have been for years. You might not know, nor should you care. It just works. Many major sporting events are also transported over public data networks. The underlying technology now exists to make this QoS capability available with "public" Layer 3 networks. It will have significant bugs at first--just as Layer 2 networks initially did. But it will eventually become stable enough that businesses depend upon it. The economic justification is in charging your customers more for a higher level of QoS. It's been done before--just not for the Internet, yet.
I'm not even convinced that from an engineering standpoint it isn't going to be cheaper for people with "short" local loops, to just always buy more capacity, than, ever drop any significant number of packets.
This is probably true. Just as bandwidth within an enterprise is cheap, short local loop bandwidth will also be cheap for those with easy access to facilities. It's the long haul where the real economic gains are.
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