Each type of managed element in the managed domain is represented by a class in the analysis model. A class consists of properties that describe a managed element. Properties include attributes , relationships , and events . Attributes describe a managed element, including its present state. Examples of attributes include an element's name and a counter that counts the number of packets traversing an interface.
Relationships define how managed elements are related to each other.
Events describe the failures that can occur in elements, the symptoms these failures cause, and the effect of failures. When viewing the results of DFM's diagnosis, it is important to remember the differences between symptomatic and compound notifications. Not all devices support all MIB values. Exception notifications are displayed in purple on the console. The properties of an exception notification list the faults that affect the managed element.