North American Network Operators Group

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Re: [funsec] Not so fast, broadband providers tell big users (fwd)

  • From: Stephen Sprunk
  • Date: Tue Mar 13 13:33:01 2007


Thus spake "Jack Bates" <[email protected]>
I would like to blame the idiots that decided that of the signal range
to be used on copper for dsl, only a certain amount would be
dedicated to upload instead of negotiating. What on earth do I
want to do with 24Mb down and 1Mb up? Can't I have 12 and 12?
Someone please tell me there's a valid reason why the download
range couldn't be variable and negotiated and that's it's completely impossible for one to have 20Mb up and 1.5 Mb down.

That's ADSL. I have 25+25 VDSL at home. My ISP frowns on "excessive" uploading, though, but they were kind enough to tell me what "excessive" means and I happily capped my uploads at that rate. Everyone wins.


So why has Ma Bell chosen to only use ADSL for consumers? Economics. Their model of having business customers subsidize residential customers relies on having at least one end of every conversation be a business customer. When both ends are residential, as in P2P, there's nobody to pay the bills and keep them afloat. That's also where the net neutrality and peering disputes come from; you only care about people using your pipes "for free" when your customers aren't paying the true cost to get bits to/from the peering point. By limiting residential upload speeds, they make it difficult to source content and thus keep their subsidy model on life support.

At least the cablecos have a decent excuse for bad upload speeds; shared bandwidth is bad enough, but in addition 1000 nodes transmitting to 1 node is much tougher electrically than 1 node transmitting to 1000 nodes. Sooner or later, they're going to have to start shrinking cell sizes and/or allocating a heck of a lot more channels to data to keep up with demand.

S

Stephen Sprunk "Those people who think they know everything
CCIE #3723 are a great annoyance to those of us who do."
K5SSS --Isaac Asimov