Version 1

    This is a custom SQL query Alert that simply creates an event into Orion events when NTA fails to poll statistics from some of CBQoS enabled interfaces for last 2 polls (changeable), and another one when everything goes back to normal. It is based on CBQoSLastTime column from NetFlowSources table.

    AlertDefinition file could be easily imported using Advanced Alert Manager.

    Note: There is a little problem here, that just negation could not be used for alert reset, so when you try to change anything in the SQL query, make sure to apply same changes into reset query to make it work properly.