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RE: BitTorrent swarms have a deadly bite on broadband nets

  • From: Frank Bulk
  • Date: Mon Oct 22 23:10:53 2007

A lot of the MDUs and apartment buildings in Japan are doing fiber to the
basement and then VDSL or VDSL2 in the building, or even Ethernet.  That's
how symmetrical bandwidth is possible.  Considering that much of the
population does not live in high-rises, this doesn't easily apply to the
U.S. population.


-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Leo
Sent: Monday, October 22, 2007 8:55 PM
To: [email protected]
Subject: Re: BitTorrent swarms have a deadly bite on broadband nets

In a message written on Mon, Oct 22, 2007 at 08:24:17PM -0500, Frank Bulk
> The reality is that copper-based internet access technologies: dial-up,
> and cable modems have made the design-based trade off that there is
> substantially more downstream than upstream.  With North American
> DOCSIS-based cable modem deployments there is generally a 6 MHz wide band
> 256 QAM while the upstream is only 3.2 MHz wide at 16 QAM (or even QPSK).
> Even BPON and GPON follow that same asymmetrical track.  And the reality
> that most residential internet access patterns reflect that (whether it's
> cause or contributor, I'll let others debate that).  

Having now seen the cable issue described in technical detail over
and over, I have a question.

At the most recent Nanog several people talked about 100Mbps symmetric
access in Japan for $40 US.

This leads me to two questions:

1) Is that accurate?

2) What technology to the use to offer the service at that price point?

3) Is there any chance US providers could offer similar technologies at
   similar prices, or are there significant differences (regulation,
   distance etc) that prevent it from being viable?

       Leo Bicknell - [email protected] - CCIE 3440
        PGP keys at
Read TMBG List - [email protected],