Westermo RedFox Series - Manual (Page 543)

Westermo OS Management Guide
Version 4.17.0-0
❼ Falling alarm events occur if the current sample value is equal or below the
falling threshold, and the previously sampled value was above the falling
threshold. A falling alarm event will also occur if the first sampled value is
equal or below this threshold, and the condition variable is configured as
falling (or any of its equivalents: low or down).
24.1.3.3 Sample types and interval
Two sample types are possible: absolute and delta sampling. With absolute sam-
pling, the value is compared directly to the alarm thresholds. With delta sampling
it is the difference between the current sample and the previous sample which is
compared to the alarm thresholds.
Alarm sources of counter type, such as RMON data traffic statistics, are well
suited for delta sampling. As the delta is computed over a given time interval
(sample interval), the alarm thresholds should be configured with respect to the
configured sample interval.
Note
As of WeOS v4.17.0 only absolute sampling is supported, and the sampling
interval is not configurable for any trigger type.
24.1.3.4 Alarm severity
For each trigger it is possible to define the severity level of the associated alarm
events. The levels defined by Unix Syslog are used:
❼ EMERG: System is unusable
❼ ALERT: Action must be taken immediately
❼ CRIT: Critical conditions
❼ ERR: Error conditions
❼ WARNING: Warning conditions
❼ NOTICE: Normal, but significant, condition
❼ INFO: Informational message
❼ DEBUG: Debug-level message
➞ 2015 Westermo Teleindustri AB 543