DFM: when does the "Alert ID" change for a device?

Unanswered Question
May 25th, 2009
User Badges:
  • Blue, 1500 points or more

If an Event occures for device_A a corresponding Alert-ID x is generated. All Events for device_A are grouped together under this Alert-ID x.

Is there a corresponding time window in which all incomming Events for device_A will be grouped under this Alert-ID x or - if generated once this Alert-ID x is bound to device_A for eternity? (or just until the next restart of dmgtd?)

Does anybody know the sense behind these not rememberable Alert-IDs which are also useless for Notification Services?

The only thing I found was this:


Terminology has changed since DFM 1.2.x as follows:

•Symptom is replaced by event. Events are rolled up into alerts.

•Compound is not used and there is no replacement. A compound differs from an alert; there could be multiple compounds on a single device, whereas an alert is a roll-up of all events for a device.


from this Install Guide:


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Joe Clarke Mon, 05/25/2009 - 11:22
User Badges:
  • Cisco Employee,
  • Hall of Fame,

    Founding Member

All events will be rolled into one alert as long as the alert stays active. Once the alert clears, and is moved to Fault History, then a new active event will create a new alert.

No, there is no significance to the Alert IDs. In fact, I typically recommend to customers not to do any notifications of alerts since events have all the juicy details.


This Discussion