Hi Tan,
Yes you are correct --- You need to configure the Device Down Triggers (Suppress until Acknowledged = Yes) with
the Device Up Trigger (Auto Acknowledge Up/Down Alerts: By default its Disabled, so select any one of them from the drop down as shown below. Select the time window whether the alerts you want to be acknowledged forever or 15 mins/ 1hr/1 day..)
In Alerts page if there's previously same alert generated for that Device then it won't generate new Alert until we acknowledge past Alerts. This is expected behavior as per designed.
I have tested below scenarios and it seems they are working as expected. If you want more features to work as per your specific requirement, then you can do new feature requests.
Limitations to be Noted:
- If the duration selected is ‘0’ then the alert is acknowledged forever. If 15mins is selected then Auto acknowledge is enabled from last 15mins and checks if there are any alerts to acknowledged and does for all of them or as per Selected time period.
- Past Alerts will not get acknowledged only the new Alerts will get acknowledged for selected time period.
- To get Past Alerts also to be acknowledged then select "Suppress until Acknowledged = No" in Trigger definition.
- Alerts are Auto Acknowledged only when the device comes Up again as the trigger and condition for Auto Acknowledge is defined in Device Up trigger.
- Device Down Alerts gets Auto Acknowledged after the Device comes up. So if the device goes down permanently then we get Device Down Alert but will not be Acknowledged until the device is up again.
- In Alerts page if there's previously same alert generated for that Device then it won't generate new Alert until we acknowledge past Alerts for ---- Suppress until Acknowledged = Yes. But If its "No" then you will see alerts will be generated even though there are same alerts for the same device in the past.
- I have tested a scenario - where there are some down and up alerts for same device in alerts page and I changed trigger definitions for Device down and up to be Suppress Until Acknowledge = No, In device Up trigger selected only Auto acknowledge to be for Device Down Only option & time window = 0. Result --- I see all down alerts even previously generated in alerts page gets Auto acknowledged.
So you are saying that Device UP alerts are not getting acknowledged even after configuring the Device Down Triggers (Suppress until Acknowledged = Yes) with the Device Up Trigger ( with Auto Acknowledge Up/Down Alerts: Selected) ?
What is the time window you have set to? Can we have screen shot of trigger definition.
Please try with the above mentioned scenarios and let us know if you are seeing same issue.
FYI - Before you test Auto acknowledge feature, I would suggest to change (Suppress until Acknowledged = No) for both Device Down and Device Up triggers, this way the new alerts will be generated even though there are same alerts for the same device in the past. Or you can clear all Alerts from Alerts page and Auto acknowledge page too. So that you can view whether alerts are generated or not and if so, whether they are Acknowledged as per the conditions defined or not.
Thanks,
Suchitra