[mrtg] Re: Total traffic

Alex van den Bogaerdt alex at slot.hollandcasino.nl
Tue Jan 16 18:31:15 MET 2001

=?iso-8859-1?Q?Vi=F0ar_Gu=F0mundsson?= wrote:
> Hello everyone.
> I have a problem with mrtg and total traffic (Perl script contributed by
> Seth Mos). 
> At routerA (Cisco 3640)the total megabytes out are "2361" but at routerB (
> Cisco 1720)the total megabytes in are "2944"  
> Does anyone know why this happens and also can maxbytes value in the
> mrtg.cfg affect this.

I don't use (nor know) the script.  However, I can come up with some
possible causes:

-1-  Maybe one router does, and the other does not, count framing
-2-  Rounding and other MRTG problems may cause (a bit of the) differences
-3-  MaxBytes may be set too low and thus samples are being discarded
-4-  Connectivity with one of the two routers is lost and MRTG uses the
     previous value

So yes: maxbytes may be the cause.

 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
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