From nisha.sasindran at gmail.com  Thu Sep 24 07:46:22 2009
From: nisha.sasindran at gmail.com (nisha)
Date: Wed, 23 Sep 2009 22:46:22 -0700 (PDT)
Subject: [mrtg-developers]  MRTG graph behaviour
Message-ID: <1253771182444-3704297.post@n2.nabble.com>


Hi All,

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
0). 

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
behaviour?

Thanks in advance,
Nisha

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