It's not really clear what's happening, and you haven't told us what the "incorrect" thresholds are or why they're incorrect. Sensor thresholds are autogenerated as the returned value +/- a percentage when they're not supplied by the device.

The reset function just unsets any thresholds so that the next discovery process will either set them back to what the device supplies, or autogenerate them again.

The sensors in question should get their thresholds directly from the device :

// HH3C-ENTITY-EXT-MIB::hh3cEntityExtTemperature.8 = INTEGER: 50
// HH3C-ENTITY-EXT-MIB::hh3cEntityExtTemperatureThreshold.8 = INTEGER: 85
// HH3C-ENTITY-EXT-MIB::hh3cEntityExtCriticalTemperatureThreshold.8 = INTEGER: 95
// HH3C-ENTITY-EXT-MIB::hh3cEntityExtLowerTemperatureThreshold.8 = INTEGER: -30
// HH3C-ENTITY-EXT-MIB::hh3cEntityExtShutdownTemperatureThreshold.8 = INTEGER: 65535

What values is your device returning?

adam.

On 2017-10-25 08:41:11, Thomas Stather <thomas.stather@mpimf-heidelberg.mpg.de> wrote:
Hi

I just noticed that one of our switches produces false positive errors because of incorrectly (auto) set thresholds for its sensors.

I then activated "reset sensors" on the sensors page of the device (there were no values for "min" and "max" set, the current temperature of the sensor is 44 degrees).

In the log i see:

5m 42s swhp58-04 SubCard0 Sensor updated (custom): temperature hh3c-entity-ext-mib 2535 SubCard0 [L: Array][Lw: Array][Hw: Array][H: Array] (by user: tstather)

5m 42s swhp58-04 SubCard0 Sensor updated (custom): temperature hh3c-entity-ext-mib 2534 SubCard0 [L: Array][Lw: Array][Hw: Array][H: Array] (by user: tstather)

5m 42s swhp58-04 Board Sensor updated (custom): temperature hh3c-entity-ext-mib 2533 Board [L: Array][Lw: Array][Hw: Array][H: Array] (by user: tstather)

5m 42s swhp58-04 Board Sensor updated (custom): temperature hh3c-entity-ext-mib 2532 Board [L: Array][Lw: Array][Hw: Array][H: Array] (by user: tstather)

but the warnings are fired again. There is still no value for "min" or "max" for those sensors.

Attached is a screenshot.

What am i doing wrong here?

Thanks in advance!

Best,
Thomas
-- 
Thomas Stather
IT Services

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5m 42s	swhp58-04	SubCard0 Sensor updated (custom): temperature hh3c-entity-ext-mib 2535 SubCard0 [L: Array][Lw: Array][Hw: Array][H: Array] (by user: tstather)
5m 42s	swhp58-04	SubCard0 Sensor updated (custom): temperature hh3c-entity-ext-mib 2534 SubCard0 [L: Array][Lw: Array][Hw: Array][H: Array] (by user: tstather)
5m 42s	swhp58-04	Board Sensor updated (custom): temperature hh3c-entity-ext-mib 2533 Board [L: Array][Lw: Array][Hw: Array][H: Array] (by user: tstather)
5m 42s	swhp58-04	Board Sensor updated (custom): temperature hh3c-entity-ext-mib 2532 Board [L: Array][Lw: Array][Hw: Array][H: Array] (by user: tstather)