Hello,

This is opennms threshold default configuration for cisco:

<threshold type="high"
ds-type="ciscoEnvMonTemperatureStatusIndex" value="40.0"
rearm="37.0" trigger="3" ds-label="cvmTempStatusDescr" ds-name="cvmTempStatusValue"/>

40C is too low and OpenNMS keeps warning it. I'll change on my config but opennms should have default configs meeting Cisco limits. Yellow limit is 55 and red limit is 65. This is my output in Cisco C3750

#show env all
FAN is OK
TEMPERATURE is OK
Temperature Value: 39 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 55 Degree Celsius
Red Threshold : 65 Degree Celsius

Thanks!