Why is only one age out filter working for SANM policy when we have set up two at 5 minutes and 10 minutes

Document ID : KB000121388
Last Modified Date : 20/11/2018
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Introduction:
Tech doc to explain how the age out filters work on SANM policy
 
Question:
Why is only one age out filter working for SANM policy when we have set up two at 5 minutes and 10 minutes
 
Answer:
Spectrum can differentiate the filter based on Alarm Severity, Landscape, Model Type e.t.c, but can not be differentiated with the Age out time.
For example: If an Alarm comes for the same device (modelled on same landscape) with same severity, and if same policy is applied with 2 different filters, then the Alarm needs to pass through the filter with Minimum age out first as the filter condition is met, and can never be passed through the higher age out filters because minimum Age Out criteria is already met.

But Spectrum still collects the Notifications data from other higher age out filters and send it to all notifications.
Ideally we can not have the filters differentiated based on the Age out. But we can have the filters based on the 'Filtered By' fields mentioned in the Filter dialog.
For example, if we have filters based on different Alarm severity (say Critical and Major) and Age out configured as 5 mins and 10 mins respectively, then if Critical alarm comes it will pass through the Filter 1 with Age out 5 mins.and will be notified to the corresponding filter 1 notification users only with 5 mins delay.
And similar way if major alarm comes, alarm will be passed through only filter 2 with Age out 10 mins, and notified to the filter 2 users only with 10 mins delay.