Follow this procedure for setting the L3/L4 Drop Threshold for devices within the root admin domain.
Select Device → <Admin Domain Name> → Global → Common Device Settings → Performance Monitoring → Thresholds.
Thresholds dialog.png)
Select L3/L4 Error Drop in the drop down list against Metric.
Enter the required threshold in the Threshold [counts/min] column (this value should be higher than the value in the Reset Threshold [counts/min] column).
Select the Generate Fault? checkbox to generate fault. Deselect the Generate Fault? checkbox to disable generation of fault.
Click Save to save your settings.
Note
Click Defaults to set the threshold settings to the default values.