[kwlug-disc] [To keep Bob delirious.] Was, & still could be: Re: New geek in the area

Bob Jonkman bjonkman at sobac.com
Thu Sep 9 00:23:41 EDT 2010

On Wed, 2010-09-08 at 21:06 -0700, Phil Longstaff wrote:
> What evidence do you have that DPI is thwarted?
> Phil

I suppose I should not have said that DPI is thwarted.  Bell can still
DPI all they like.  However, one of the reasons they perform DPI is to
identify traffic to throttle, and that identification is thwarted, and
so throttling is thwarted.

I'm sure Bell is fully aware of these side-effects of MLPPP, but as long
as I'm the only one using it they probably can't be bothered to tweak
their DPI identification to get 100% coverage.  So stay away, the rest
of you!


> From: Bob Jonkman <bjonkman at sobac.com>
> To: KWLUG discussion <kwlug-disc at kwlug.org>
> Sent: Thu, September 9, 2010 12:00:04 AM
> Subject: Re: [kwlug-disc] [To keep Bob delirious.] Was, & still could
> be: Re: New geek in the area
> On Wed, 2010-09-08 at 23:49 -0400, Khalid Baheyeldin wrote:
> >        Bob Jonkman wrote, On 09/08/2010 11:29 PM:
> >                Single-line subscribers can still pay for the MLPPP
> >                service, then use their fancy router firmware to
> >                enable Single-Link PPP, or SLPPP.  The header offset
> >                still applies, and Bell's DPI and throttling is
> >                effectively thwarted.
> > 
> > If you have a single line, does it affect speed in any other way
> other
> > than bypassing Bell's DPI? 
> > 
> I suppose that the six extra bytes for MLPPP reduce the packet payload
> by 6 bytes/packet, and that theoretically slows things down.
> In practice, I haven't noticed any difference at all.
> Actually, now that Bell's throttling is thwarted certain members of
> the
> household do nothing but Bittorrent Ubuntu ISOs all day long.  Now
> *that* slows down traffic for the rest of the family!
> --Bob.


Bob Jonkman <bjonkman at sobac.com>         http://sobac.com/sobac/
SOBAC Microcomputer Services              Voice: +1-519-669-0388
6 James Street, Elmira ON  Canada  N3B 1L5  Cel: +1-519-635-9413
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