Interface Errors and Discard Threshold

From the WhatsUp Gold navigation menu:

1. Select SETTINGS menu > Alerts and Actions > Alert Center.

   Alert Center Libraries view displays.

2. Click Thresholds Library panel (to expand it if collapsed).

   The Thresholds Library displays.

3. On the Thresholds Library panel, click the "add" button ().

   The Select Threshold Type dialog displays.

4. Choose Interface Errors and Discard Threshold and click OK. (This adds a new Interface Errors and Discard Threshold to your library.)

   The New/Edit Interface Errors and Discard Threshold Alert dialog displays. (Now, you must configure your Interface Errors and Discard Threshold.)

5. Edit the Interface Errors and Discard Threshold configuration.

To configure an interface errors and discards threshold:

1. Configure the following:
   • Name. Specify a name for the threshold. This name helps you identify the threshold in the Threshold library and displays as the report title on the Alert Center Home page.
   • Threshold. Select and enter the threshold criteria variables and values. You can choose to create a threshold based on discards, errors, or a combination of the two.
     The default threshold is configured to alert when inbound or outbound interface utilization exceeds 100 discards per minute for more than 20 minutes.
     - and / or -
     when errors for inbound or outbound interface utilization exceeds 100 errors per minute for more than 20 minutes.

   Tip: Notification policies are optional for most thresholds. Out of threshold items still appear on the Alert Center dashboard.

   • Devices to Monitor. Click Select to choose the devices to which the threshold applies. By default, the threshold monitors all devices where the applicable monitor is enabled.
   • Notification. Select the notification policy to apply to this threshold. This policy begins sending notifications when an item is outside the configured threshold limits. If you do not see an appropriate threshold policy, or if the list is empty, click browse (...) to open the Notification Policy dialog and configure a new policy.

   Tip: Notification policies are optional for most thresholds. Out of threshold items still appear on the Alert Center dashboard.

   • Threshold check. Enter a value for the threshold check interval, or the interval at which the Alert Center checks the Network Performance Monitor database to see if there are items that are outside the threshold parameters. The default threshold check is 10 minutes.
   • Select Automatically resolve items no longer out of threshold to have Alert Center automatically resolve items when they go back inside the parameters of the threshold.

   Note: Configure the threshold check interval for a longer time than the sampling interval for thresholds relating to trends, such as percent utilization. Configure it for a time the same as (or similar to) the sampling interval when configuring a threshold for a health check.
   Avoid setting the threshold check interval to a very short time, as this can degrade system performance. In general, setting the threshold check interval to less than five minutes is not advised.

2. Click OK to save the threshold settings.

Clone a threshold based on a custom or built-in configuration:

1. Click on a threshold on the Thresholds Library panel you want to copy.
2. Click the Copy button, and click OK to create a new Interface Errors and Discard Threshold.

   The Edit Interface Errors and Discard Threshold dialog displays.

3. Save or customize your new threshold, either:
   • Type in a new value for Name field (or keep the default) and click OK to save to the Thresholds Library.
   • Follow the Edit Interface Errors and Discard Threshold instructions.

Delete an existing Interface Errors and Discard Threshold:

1. Select Interface Errors and Discard Threshold you want to delete from the Interface Errors and Discard Threshold panel.
2. Click the Delete button, and then click Yes to confirm the deletion.

   The Interface Errors and Discard Threshold configuration is deleted.