On every poll, there is an event raised followed by a clear for a device which is no longer on the network

Document ID : KB000048157
Last Modified Date : 27/02/2019
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Issue:

There is a scenario in CAPM whereby a Data Aggregator (DA) polled device has been temporarily removed from the network. The device is still in the PC configuration.

There are Events being generated against it based on a reachability/availability condition.

Because the device is no longer on the network, an Event is raised on each poll:

"Polling has been temporarily reduced due to prior timeouts. Check the PollSummary.log for more details. The device may be down or may be receiving more polls than it can respond to"

On each poll after we log an event, we log a clear with the following text:

"Normal Polling Has Resumed"

Environment:
CAPM 3.x
Cause:
This is an expected behavior though the message may not be clear. We attempt to poll the device during the poll cycle and because it does not exist we get a timeout. Once we have 15 messages time out, we stop polling for the cycle and produce the Raised event. The message of resuming normal polling is because we are attempting to resume normal polling every poll cycle even after a timeout.
Resolution:
Try increasing the timeout for the effected devices as per the instructions in the following KB article:
If that does not alleviate the issue, then the device may be sensitive to polling, see the following:

 
Additional Information:
https://docops.ca.com/ca-performance-management/3-6/en/troubleshooting/polling-stopped-event-message