Follow this procedure for setting the L2 Drop threshold for devices within the admin domain.
Select Devices → <Admin Domain Name> → Global → Common Device Settings → Performance Monitoring → Thresholds.
Thresholds dialog.png)
Select L2 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 Generate Fault? to generate fault.
Click Save to save your settings.
Note
Click Defaults to set the threshold settings to the default values.