[165645] in North American Network Operators' Group

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Re: common method to count traffic volume on IX

daemon@ATHENA.MIT.EDU (Nick Hilliard)
Tue Sep 17 07:02:21 2013

X-Envelope-To: nanog@nanog.org
Date: Tue, 17 Sep 2013 12:02:08 +0100
From: Nick Hilliard <nick@foobar.org>
To: Martin T <m4rtntns@gmail.com>
In-Reply-To: <CAJx5YvF-vL2k4tLRZ5ZcD_BYgr-pXF7f619qSdhpFAFiRtuJ=g@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On 17/09/2013 11:52, Martin T wrote:
> Is there a common method to count this traffic on a switch-fabric?
> Just read all the switch interface "packets input" counters with an
> interval to get the aggregated input traffic and read all the switch
> interfaces "packets output" counters to get the aggregated output
> traffic?

most IXPs count this as the sum of all ingress packets over a period of 300
seconds.  A small number of IXPs do different stuff, e.g. different
sampling interval or counting traffic on inter-switch links.

Nick




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