Reporting › Network Performance Dashboard › Top Interface Utilization - Out - Trend/Table

Top Interface Utilization - Out - Trend/Table

The Top Interface Utilization - Out trend/table chart lets you quickly determine which device interfaces handled the highest traffic load during a selected time frame. By default, it shows the 10 device interfaces with the highest average utilization, shown as a percentage of interface capacity.

Top Interface Utilization is shown in both the outbound and inbound directions for the following reasons:

• Almost all digital interfaces are full-duplex–they can transmit data independently at the same time as they receive data.
• Interface utilization is typically asymmetrical. The term means that there is typically much more traffic being transmitted than received, or vice-versa.

  The asymmetry depends on the location of the device or interface and the applications in use. For example, a data center services client-server application traffic. The WAN router interfaces on the data center side typically transmit much more data than they receive. By contrast, the router interfaces on the remote office side receive much more data than they transmit. The asymmetry results from the behavior of client-server application traffic: small requests travel from the client computer to the data center, while large responses are transmitted from the data center to the client computers.

The Top Interface Utilization - Out view shows the top average interface utilization levels during a selected time frame. The view contains a trend chart and an accompanying table that displays data for individual processors.

The trend chart shows average utilization values from the indicated device. The table view provides bar charts of interface utilization values, color-coded to indicate severity. In the table, the average utilization levels during the selected time frame are broken out by individual interface.

Click the name of an item to see more data from that item.

By default, the Top Interface Utilization - Out view includes the following information:

Device Name

Identifies the managed item that was the source of the performance data. If an administrator defined an alias for the device item, the alias is displayed. Otherwise, the discovered device name is displayed.

Name

Is the name of the interface.

Average Utilization Out

Is the outbound utilization of the interface, expressed as a percentage of interface capacity.

More Information:

Interface Utilization

Edit Trend/Table View Settings

You can change several settings for each view on a dashboard. In addition to providing a new title, you can change settings that are related to severity ratings. To ensure excellent performance in a large reporting environment, you can set an upper limit on the number of results that are returned. You can also select another group context for the data.

Follow these steps:

1. Click the Options (gear) icon on the view, and select Edit from the menu.

   The view Settings dialog opens.

2. Change the view Title or Subtitle to reflect the modified view.
3. Change the settings that are applied to the view if desired. Not all settings are available for all table view types:

   Moderate Status Start

   The lowest value for metrics that are displayed as Moderately Degraded in the view. Applies to the color-coding of gauge charts in gauge/table views.

   Default: Depends on the performance metrics reflected in the view. Click Use Defaults to revert to factory defaults.

   Critical Status Start

   The lowest value for metrics that are displayed as Critically Degraded in the view. Applies to the color-coding of gauge charts in gauge/table views.

   Default: Depends on the performance metrics reflected in the view.

   Max Rows

   Limits the number of table rows that are returned by the associated database query to preserve monitoring-system performance.

4. (Optional) Filter the view by time zone and business hours. Such filtering lets you monitor critical business functions during actual business hours in their respective time zones.
   1. Select the 'Time Filtering: Enabled' check box.
   2. Select the Time Zone filter that best represents the geographic location of the business function. The list contains only time zones that are associated with the configured sites for the current tenant.

      Tip: The list offers a "type ahead" feature. As you type the name of the country for a time zone, the list quickly scrolls to the time zones in that country.

   3. Select the appropriate Business Hours filter. The Options in the list are available only after you select a Time Zone filter.

      The list contains only business hours that are associated with the current tenant. However, it is not filtered by group or item context. If you have selected a context for the view, select the business hours that are associated with the applicable site. Otherwise, the view contains no data.

      Note: A CA Performance Center administrator configures all business hour selections that are available in the Business Hour Filter list.

5. Select a Context Type.
   • If you select the Group type, the Groups tree is displayed to help you select a group.
   • If you select one of the available item types, a table is displayed to help you select a specific item.Click to expand nodes in the Context Settings area.
6. Locate the group whose data you want to see in the view and select it.
7. Select the scope of your changes from the Apply Changes drop-down. Select one of the following options:
   • For All Tenant Users: Saves the changes so that they are only available to users associated with your tenant (possibly the Default Tenant).
   • My User Account: Saves the changes to your user account as a default for this view.
   • My Current Session: Reverts the changes when you log out.

   Note: The availability of these options depends on your user account role rights.

8. Click Save.

   The view is refreshed to reflect your updates.