Hi everyone,
I’m looking for some clarification regarding Rate thresholds in DataMiner alarm templates.
We currently have a parameter where the alarm template uses Type = Rate, and alarms are triggered based on how quickly the value changes.
Example requirement:
- If the parameter increases > 10 Mbps per minute, a Warning alarm should trigger.
- If it decreases faster than 10 Mbps per minute, another alarm should trigger.
However, the requirement now is to evaluate this over a 10-minute period instead of the current ~1 minute behavior, while keeping the polling interval the same.
I wanted to confirm whether it is possible to configure a 10-minute rate evaluation window directly in the Alarm Template while keeping the same polling interval, or if achieving this behavior would require changes in the connector (for example, creating a calculated parameter that compares the current value with the value from 10 minutes earlier).
Any guidance would be appreciated.
Hi Rachel,
Unfortunately, the Rate thresholds option in the alarm template – just as the name suggests – does not take the polling period into account. It only evaluates the change in the parameter value between consecutive polls. In your example, the parameter is polled every 1 minute, so a Rate threshold will not work if you need to calculate a rate over a different interval than the polling interval.
You do have other options using Baseline calculations (more details available in the documentation).
With baselines, you can detect variations relative to a computed baseline measured over a defined period, although this mechanism is limited to day-based units, so it may or may not fit your requirements.
Another alternative, is to adjust the connector for those elements to expose a new parameter that already represents the rate of change you need.
Hope this helps.