[101588] in North American Network Operators' Group
Re: ISPs slowing P2P traffic...
daemon@ATHENA.MIT.EDU (Mark Radabaugh)
Sun Jan 13 10:57:03 2008
Date: Sun, 13 Jan 2008 10:55:54 -0500
From: Mark Radabaugh <mark@amplex.net>
To: nanog list <nanog@merit.edu>
In-Reply-To: <478528D5.1060009@ai.net>
Errors-To: owner-nanog@merit.edu
The vast majority of our last-mile connections are fixed wireless. The
design of the system is essentially half-duplex with an adjustable ratio
between download/upload traffic. PTP heavily stresses the upload
channel and left unchecked results in poor performance for other
customers.
Bandwidth quotas don't help much since it just moves the problem to the
'start' of the quota time.
Hard limits on upload bandwidth help considerably but do not solve the
problem since only a few dozen customers running a steady 256k upload
stream can saturate the channel. We still need a way to shape the
upload traffic.
It's easy to say "put up more access points, sectors, etc.) but there
are constraints due to RF spectrum, tower space, etc.
Unfortunately there are no easy answers here. The network (at least
ours) is designed to provide broadband download speeds to rural
customers. It's not designed and is not capable of being a CDN for the
rest of the world.
I would be much happier creating a torrent server at the data center
level that customers could seed/upload from rather than doing it over
the last mile. I don't see this working from a legal standpoint though.
--
Mark Radabaugh
Amplex
419.837.5015 x21
mark@amplex.net
