Comparison between sampled SFlow and Interface-Statistic

From: Alexander Czutka <>
Date: 08/07/07
Message-ID: <>


a customer of mine is complaining about the difference between the data
which he samples with SFlow and SNMP.

When he compares the amount of sampled SFlow-data against the value
which he is receiving via SNMP of the interface, there is a great

Now, I have done a test :

I put a single switch and transferred traffic between a client and a
server. Then I compared the amount of sflow-data with the

(I changed the polling and sampling interval to 1). There was a gap of
50 % when I transferred 500 Mbytes.

Is there a rule of dump between Interface-statistic and SFlow-data ?



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Alexander Czutka Phone: +49 (0)89 374 292

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Received on Tue Aug 7 04:19:01 2007

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