On 07/09/2007, paul at clubi.ie <paul at clubi.ie> wrote:
> On Fri, 7 Sep 2007, Thomas Bridge wrote:
> > I'm still struggling to see the existing model as particularly
> > inefficent in that 99.9% of traffic still seems to take the "optimal"
> > route.
> Again, if you're operating a wholesale/retail-DSL ISP, then:
> - It's *impossible* for any localised traffic to exist
> - So you'll never see it
> - So you'll *never know* how much of the P2P and BT traffic you see
> /could/ have been shared locally
Within the context purely of your own customers - you can - you can
simply compare the traffic that comes in from the telco to the traffic
that leaves the BAS on the other side. While that doesn't tell you
what the value is on a per exchange basis, it does give a hint as to
how much traffic is being exchanged directly between your customers.
My recollection is that it was pretty insigificant.
I agree that you can't tell what the patterns are for other users with
other ISPs in the same domain. I see no major evidence that there
is much "localised" traffic taking the suboptimal route.
T.
--
Thomas Bridge
CCIE #14108
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