[e2e] Re: crippled Internet
fred at cisco.com
Tue Apr 24 13:27:53 PDT 2001
At 10:54 PM 4/23/2001 -0400, David P. Reed wrote:
>Adequate provisioning goes a long way to fixing QoS, and ... Neither is
That's not proven either. If you talk with the Tier 1's, they'll tell you
that bandwidth is the answer, and that they have deployed it copiously
within and between their networks. Many of the larger North American edge
networks make the same comment. But for simple bandwidth to result in
guaranteeable QoS, one has to have significantly more bandwidth than
required, on the order of 50% utilization at the busiest moment in the day.
That is a huge investment.
I will argue that making the kinds of guarantees that voice calls for, and
numerous other applications, and remaining cost-effective for anyone who
doesn't view bandwidth as an end in itself, winds up requiring a lot more
than bandwidth, and you're correct that only about 1/3 of edge networks
report using that internally, and only a few ISPs offer that as a service.
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