Nagios не могу перевернуть параметры

это вообще не от nagios зависит, а от конкретной команды

check_snmp Вот эта команда

- Ranges are inclusive and are indicated with colons. When specified as 'min:max' a STATE_OK will be returned if the result is within the indicated range or is equal to the upper or lower bound. A non-OK state will be returned if the result is outside the specified range. - If specified in the order 'max:min' a non-OK state will be returned if the result is within the (inclusive) range. - Upper or lower bounds may be omitted to skip checking the respective limit. - Bare integers are interpreted as upper limits. - When checking multiple OIDs, separate ranges by commas like '-w 1:10,1:,:20' - Note that only one string and one regex may be checked at present - All evaluation methods other than PR, STR, and SUBSTR expect that the value returned from the SNMP query is an unsigned integer.