[mrtg-developers] MRTG graph behaviour
nisha.sasindran at gmail.com
Thu Sep 24 07:46:22 CEST 2009
I am using MRTG application and need inputs on the MRTG graph behaviour.
The router config file has certain OID’s which on polling may or may not
return a result. Now in case there is no result, I am manually setting the
value to 0 in the rrd file. This causes spikes of very high value in the
graph when the traffic is stopped.
To avoid this I removed those lines of code where I was manually setting the
value to 0 so that "NaN" gets written in the rrd files. This resulted in
hanging graphs (graph values starting from middle instead of starting from
I also tried setting the option “unknaszero” in the router config file. This
option was plotting the correct continuous graphs but the graph legend/label
was still showing the value 0.
Can anyone suggest a solution for this if you have come across this kind of
Thanks in advance,
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