common method to count traffic volume on IX
niels=nanog at bakker.net
Wed Sep 18 22:55:27 UTC 2013
* bicknell at ufp.org (Leo Bicknell) [Wed 18 Sep 2013, 19:23 CEST]:
>On Sep 17, 2013, at 3:15 PM, Niels Bakker <niels=nanog at bakker.net> wrote:
>>I don't know of any IXP that does this. Industry standard is as
>>you and others wrote before: the 5-minute counter difference on
>>all customer-facing ports, publishing both input and output bps
>>and pps. I guess MRTG is to 'blame' for these values more than
>Serious question, at an IXP shouldn't IN = OUT nearly perfectly?
Ding ding ding! And that's why honest IXPs graph both, to show that
they have no packet loss on their inter-switch links.
(Or, much more likely, measurement errors due to wrong config for the
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