This mib defines the SNMP objects to report exceptions to north-bound NMS. The devices implementing this MIB monitor the status of hardware and software services, and report any exceptions regarding these components. These hardware and software services could belong to the monitoring devices or other managed devices. An exception is something abnormal that the system administrators should pay attention to. The criteria for what is an exception could vary by system and should be defined by the system administrators. Certain NM devices or applications may have pre-defined exceptions. This MIB does not try to define exceptions. But rather it defines SNMP objects for devices to use SNMP notification as an exception reporting mechanism. Exceptions may be pre-defined or defined through other device management interface such as CLI, GUI, or HTTP.