Event Management, as defined by ITIL, is the process that monitors all events that occur through the IT infrastructure. It allows for normal operation and also detects and escalates exception conditions.
An event can be defined as any detectable or discernible occurrence that has significance for the management of the IT Infrastructure or the delivery of IT service and evaluation of the impact a deviation might cause to the services. Events are typically notifications created by an IT service, Configuration Item (CI) or monitoring tool.
Event notifications can be proprietary, only certain management tools can be used to detect events. Most of the Configuration Items (CIs) generate event notifications using SNMP open protocol (Simple Network Management Protocol).
The CIs are configured to generate a set of events based on the designer's experience.
Once an Event notification has been generated, it will be detected by the specific tool (read and interpreted)
Filtering means that the event notification can be ignored or communicated to the management tool. If ignored, the event will usually be recorded in a log file on the device, but no further action will be taken.
During the filtering step, the event will receive a level of correlation (type: informational, warning, or exception).
The filtering step is not always mandatory, some CI's have significant events that are communicated directly into the management tool (even if they are duplicated).
Standard categorization based on the significance of an event:
Note the addition below is not an Event type but analysis that can be carried out from the Event logs:
At this point in the process, there are a number of response options available. Some of the options available are:
Incident Record: an incident can be generated when an exception is detected.
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and .evtx
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