[mrtg] Re: How to correct wrong values in .rrd-files?

[Christoph Wagner]

Thanks a lot for this info - I will wait for it.

Regards,
Chris
----- Original Message -----
From: "Rich Adamson" <radamson at routers.com>
To: "MRTG-Users" <mrtg at list.ee.ethz.ch>
Cc: "Christoph Wagner" <christoph-w at gmx.at>
Sent: Wednesday, March 06, 2002 12:32 PM
Subject: Re: [mrtg] How to correct wrong values in .rrd-files?


> Chris,
> This is a known problem with recent versions of mrtg. The problem has been
> corrected by the author and the fix will appear in the "pre2" release
shortly.
>
> The problem stems from mrtg missing an snmp poll for whatever reason. If a
> poll is missed, the next successful poll will calculate the difference
between
> the new snmp counter (which can be a very large number) and the previous
> value (which was incorrectly stored in the log file as zero from the
missed
> poll).
>
> > I have used MRTG for a longer time and have sometimes experienced
problems
> > with an IfInOctets/ifOutOctets-value which cannot be true.
> > (eg. in our environment - one router with 1Mbit/s serial and
> > 100TX-FastEthernet cannot have a load of eg. 7Mbit/s on the
LAN-interface
> > even if this value is smaller than maybytes)
> >
> > Till now we have corrected this by changing the .log/.old-files but how
can
> > we correct this when using RRDTool. (we must correct it because else the
> > graph is unusable with such a high peak)
>


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