[mrtg] Signal strength

[Steve Haavik]

I'm trying to monitor the signal strength on a Ceragon FibeAir 1528I. Is
there a way to get MRTG to accept the negative values I'm getting from the
radio?

# snmpget 10.1.1.10 public .1.3.6.1.4.1.2281.3.1.2.1.3.1 .1.3.6.1.4.1.2281.3.1.2.1.4.1
enterprises.2281.3.1.2.1.3.1 = 17
enterprises.2281.3.1.2.1.4.1 = -64

Here is the config stub I'm trying to use.

unscaled[_]:
options[radio_local_signal]:  growright,nobanner,gauge,nopercent
Target[radio_local_signal]: .1.3.6.1.4.1.2281.3.1.2.1.4.1&.1.3.6.1.4.1.2281.3.1.2.1.3.1:public at radio:
Directory[radio_local_signal]:  radio
MaxBytes[radio_local_signal]:  140
Title[radio_local_signal]:  Local Signal Levels
YLegend[radio_local_signal]: db
ShortLegend[radio_local_signal]:  db
LegendO[radio_local_signal]:   TX db:
LegendI[radio_local_signal]:   RX db:
PageTop[radio_local_signal]:  <H1>Local Signal Levels</H1>


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