Alarm Thresholds for Performance Monitoring

The device's Web-based management interface lets you configure alarm thresholds per performance monitoring parameter. This is done in the Alarm Thresholds table (Setup menu > Administration tab > Performance Monitoring folder > Alarm Thresholds). These alarms are sent by the device through SNMP as trap events, notifying the SNMP manager of alarm severity level changes in performance monitoring parameters.

For each performance monitoring parameter(s), you can configure an Alarm Threshold rule with the following:

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Thresholds:

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You can configure a threshold value that if crossed by the performance monitoring parameter raises an alarm. This is referred to as the raise watermark.

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You can configure a threshold value that if crossed by the performance monitoring parameter clears a raised alarm. This is referred to as the clear watermark.

The area between these two thresholds provides a hysteresis. This allows fluctuation between the thresholds and eliminates false alarms.

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Threshold crossing direction to raise or clear the alarm:

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You can configure the alarm to be raised when the performance monitoring parameter result becomes greater than the raise watermark threshold and cleared when it becomes less than the clear watermark threshold. This is referred to as the up direction.

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You can configure the alarm to be raised when the performance monitoring parameter result becomes less than the raise watermark threshold and cleared when it becomes greater than the clear watermark threshold. This is referred to as the down direction.

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Alarm text (description) that is displayed when the alarm is raised or cleared.

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Alarm severity level of the raised alarm (e.g., Major).

For more information on configuring alarm thresholds for performance monitoring parameters, refer to the device's User's Manual.