[mrtg] Spikes in polls

[Nicolai Strøm Gylling]

Hi

I am getting some abnormal readings (100 times higher) from several HP-switches we are monitoring, which results in spikes in our graphs. Until now, i havn't found a solution in the hardware, that could fix the problem, so now i'm looking for a way to discard readings in MRTG, that's abnormal.

Is there a way to do this? 

I'm running MRTG 2.9.17 with RRDTool 1.0.33. Output from rrdtool fetch included below:
----
1021484100:  1.7954599978e+04  5.6673534889e+03
1021484400:  2.3376858644e+04  1.2592368444e+04
1021484700:  5.0017381789e+05  4.0560592608e+06 <--
1021485000:  1.2080965297e+05  9.7996711459e+05 <--
1021485300:  0.0000000000e+00  9.2474042030e+06 <--
1021485600:  1.2782754153e+04  4.8065087684e+04
1021485900:  1.1444875717e+04  5.8231348800e+03

Best regards

Nicolai Gylling

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