[70872] in North American Network Operators' Group
Re: best effort has economic problems
daemon@ATHENA.MIT.EDU (Gordon Cook)
Sat May 29 16:54:34 2004
Date: Sat, 29 May 2004 16:53:17 -0400
To: nanog@merit.edu
From: Gordon Cook <cook@cookreport.com>
Errors-To: owner-nanog-outgoing@merit.edu
may I make just a passing observation?
From a technology point of view the best effort internet certainly
"works." Not surprisingly the comments here are primarily debating
the finer points of the technology.
The point I am making in my report is NOT that the best effort
network has technology problems but rather that it has ECONOMIC
PROBLEMS. That it might support 2 or 3 players not 2 or 3 HUNDRED.
That until companies begin to go chapter seven and vanish, the best
effort net will be a black hole that burns up capital because, for
many players, the OPERATIONAL expense is more than they get for
bandwidth never mind cap-ex.
best effort won't go away. many best effort players will.
for the time being, best effort bandwidth prices as an absolute
commodity cannot sustain networks over the long haul. A network that
can deliver QoS the report hypothesizes may be able to attract enough
revenue to become profitable. How to to this my group is still
discussing. We don't pretend that QoS is easy or any kind of mature
collection of technologies, but increasingly it looks as though the
industry, if it is ever going to be self sustaining, really needs to
look at QoS services and solutions.
>On Sat, 29 May 2004, Edward B. Dreger wrote:
>
>> Nitpicking: Latency isn't that important with unidirectional
>> communication. However, VoIP users seem reasonably happy with
>> current latency and jitter -- and the Internet still is _largely_
>> xxTP, anyway... particularly if one ignores peer-to-peer file-
>> swapping programs.
>
>Latency is fine for VOIP as long as you dont interact with the PSTN
>network, if you want to interact with PSTN then you need echo
>cancellation if you have high latency on the IP part.
>
>Most VOIP applications can handle 40ms jitter, so that's normally no
>problem unless your local access is full. Packet loss is normally no
>problem for VOIP if you use a proper (non-telco developed) codec.
>
>VOIP is actually better off with high packet loss and low jitter than the
>other way around (throwing off the old truth that core equipment should
>have lots of buffers).
>
>--
>Mikael Abrahamsson email: swmike@swm.pp.se
--
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