Thresholds are baselines established to monitor data collection. If collected data goes beyond the Threshold value, it indicates that the collected value is not a recommended value which may deteriorate network performance. Web NMS Performance module allows you to create such Thresholds.
Each Threshold can be associated with a "severity level". The severity level will indicate to the network operator the criticality of the situation. For e.g. assume Performance data collected for "Interface in octets" OID for a switch. If it is below 12000, it indicates that switch is not performing well.
Monitoring collected data using Thresholds leads to "Proactive monitoring ". By setting severity levels, you can determine well in advance whether the collected data is up to the mark or not. Whenever threshold rules are violated, Threshold events are generated. These events are received by Fault module which handle the event and determine appropriate action.
A single threshold can be associated with many PolledData
A single PolledData can have many thresholds associated
Note: Detailed explanation on Threshold and its types has been provided in Defining Thresholds.
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