[mrtg] big peaks on counter-reset

Hector Herrera mail4hh at pobox.com
Thu May 18 20:05:57 MEST 2006

Hi Oliver,

I had a similar problem with my application.

What is actually happening is that MRTG is designed with a 32-bit
counter in mind.  When it sees the count start again at 0, MRTG is
assuming it reached the max ( 2^32-1 ) and then it wrapped around.

What I can recommend is that you reduce the MaxBytes value to a number
that is slightly higher than the max amount of traffic you expect to
see between two MRTG samples, but a lot lower than the counter
wrap-around value.

Hope this helps.

Pier Programming Services Ltd.

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