common method to count traffic volume on IX
m.hallgren at free.fr
Tue Sep 17 23:24:29 UTC 2013
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Le 17/09/2013 20:15, Patrick W. Gilmore a écrit :
> On Sep 17, 2013, at 12:11 , Martin T <m4rtntns at gmail.com> wrote:
>> Thanks for all the replies!
>> counting traffic on inter-switch links is kind of cheating, isn't it?
>> I mean if "input bytes" and "output bytes" on all the ports facing the
>> IX members are already counted, then counting traffic on links between
>> the switches in fabric will count some of the traffic multiple times.
>> how does smaller sampling period help to show more traffic volume on
>> switch fabric? Or do you mean that in case of shorter sampling periods
>> the traffic peaks are not averaged out and thus peak in and peak out
>> traffic levels remain higher?
Good reading, to get an idea:
Section 3, mainly.
> The graph has a bigger peak, and DE-CIX has claimed "see, we are
bigger" using such graphs. Not only did they not caveat the fact they
were using a non-standard sampling method, they have refused to change
when confronted or even say what their traffic would be with a 300
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