Reporting › Interface Context Views › Calendar Heat Chart - Interface Discards

Calendar Heat Chart - Interface Discards

The Calendar Heat Chart - Interface Discards (in the outbound or inbound direction) assigns severity ratings to inbound interface discard rates and color-codes each severity category. The chart then plots the severity using colored blocks on a calendar table. You can modify severity values to reflect your unique environment.

Calendar Heat Chart views help engineers and managers identify patterns in metrics. Identifying such patterns can be a critical step in locating the source of performance issues that might appear to be intermittent.

Each reported discard is a packet that the reporting interface threw out. The sending host must retransmit such packets if a reliable protocol such as TCP is used to send the data end-to-end. Interface discards are typically the result of congested queues serving the interface. Use this view to find patterns in interface discard metrics for each hour, day, and week of the month.

By default, the Calendar Heat Chart - Interface Discards chart 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.

Interface

Is the name of the interface.

Total Discards Out

Is the total number of discarded packets for outbound traffic on the interface during the reporting period.

Total Discards In

Is the total number of discarded packets for inbound traffic on the interface during the reporting period.

More information:

Calendar Heat Charts

Interface Utilization

Edit the Calendar Heat Chart

You can edit a calendar chart view to change the title, the threshold values for color zones, or the managed item context.

Follow these steps:

1. Click the Edit icon on the view, and select Edit.

   The Settings dialog opens.

2. Change the following options as required:

   Title

   Appears in the title bar of the view.

   Sub Title

   Appears just underneath the title.

   Default: The type of managed item whose data is displayed in the view.

   Time Display Format

   Lets you select the time format for the chart, either 12 hours or 24 hours.

   Zone Start

   Lets you change the starting value of each heat zone. The defaults are based on IT industry standards for performance.

   Units are specific to the current metric; for example, the default Red Zone Start value for CPU utilization is 70 %.

   Business Week Start

   Lets you select the weekday on which to base the business week pattern-matching algorithm. The pattern is adjusted to count the selected day and four days after it.

   Default: Monday.

3. Click to select another managed item in the Context Settings area.

   Data from the new item will be shown in the view.

4. 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.

5. Click Save.

   The view is refreshed to reflect your updates.