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[ NNSquad ] Who Confirms The Accuracy (or is it precision) Of ISP Usage [sic] Meters?

----- Forwarded message from Dave Farber <dave@farber.net> -----

Date: Thu, 14 Jan 2010 12:30:25 -0500
From: Dave Farber <dave@farber.net>
Subject: [IP] read  Who Confirms The Accuracy (or is it precision) Of ISP
	Usage [sic] Meters?
Reply-To: dave@farber.net
To: ip <ip@v2.listbox.com>

Begin forwarded message:

> From: "Kahn, Kevin" <kevin.kahn@intel.com>
> Date: January 14, 2010 11:06:30 AM EST
> To: "dave@farber.net" <dave@farber.net>
> Subject: RE: [IP] re Who Confirms The Accuracy (or is it precision) Of 
> ISP Usage [sic] Meters?

> > The deeper issue is our willingness to accept the bad metaphor that 
> leads us to think we are using up the "Internet" as if we were  
> consuming electricity.
> Bob’s wrong – if you’re using bandwidth on a path, I can’t use it on the 
> same path. While we’re not talking about a finite natural resource, like 
> oil, or similar, we’re talking about what I’ll characterize as 
> financially limited finite resource: bandwidth.
> At least on this list inhabited by folks who actually do generally know 
> something about the technology could we manage to be precise in our use 
> of “bandwidth” (a measure of instantaneous transmission rate) and “ 
> transferred  bit quantity”.  Except in the case of a constant load over 
> the entire measured period, these are very different things.  The 
> so-called “bandwidth caps” are for the most part not that at all. They 
> limit the total amount a user can transfer over some period (generally 
> it seems a month).  I understand that there is likely a correlation 
> between people who transfer a lot of data over a month and those that 
> try to run a high instantaneous rate, but it is precisely the difference 
> that makes capacity caps unlikely to be the right tool.  There may be 
> two problems that ISPs have.  The most common is what capacity they 
> provision in their networks and capacity caps only address this 
> incidentally via the correlation above.  For handling fairness on an 
> immediate basis they need not caps but rather better scheduling 
> algorithms for the traffic that penalize proportionally to the “excess” 
> traffic that users are generating right then.  The other problem may be 
> one of costs related to disproportionate total traffic exchange (which 
> could justify a capacity cap) but this one doesn’t get spoken of much.  
> Placing a capacity cap on a user who goes out of her way to heavily use 
> the service only in off peak hours does nothing to help problem one.  
> Conversely, a user who stays well under the capacity cap but puts all 
> that load in the peak hour or two every day is impacting the system 
> considerably.  Independent of any of our beliefs about what ISPs should 
> or shouldn’t do, or how neutrally they may do it, could we at least be 
> precise about what we are talking about on this issue?
> ____________________________________________________________
> Kevin C. Kahn
> Intel Senior Fellow, Director Communications Technology
> Intel Labs
> JF2-96
> 2111 NE 25th Ave
> Hillsboro, OR 97124-5961

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----- End forwarded message -----