HP Network Direr Software Products manual Displaying Thresholds

Components 283

The length of time for which the history is maintained may be configured via the Tools > Options dialog box. See “Configuring the Storage of Monitoring Data” on page 306 for more information.

Each monitor has a menu that can be launched by right-clicking on the monitor’s live graph. Some items in the menu are not always applicable.When this is the case, the menu option is grayed out.

The operations provided by the right-click menu are equivalent to their corresponding main menu items. See “Live Graphs Menu” on page 285 for more information.

Displaying Thresholds

Each monitor has a configurable threshold associated with it that represents an abnormal, or high, state for that monitor.For multi-state monitors, 3Com Network Director also automatically determines an appropriate warning threshold for the monitor.These thresholds are used mainly for event generation: if a monitor stays in the warning or high state long enough then it will generate an appropriate event.

When a graph for a multi-state monitor includes values that are near or exceed the warning threshold a yellow horizontal dashed line is displayed on the graph to indicate the warning threshold level. Additionally, if the graph includes values that are near or exceed the high threshold a red horizontal dashed line is displayed on the graph to indicate the high threshold level.

It is possible to force the Live Graphs window to always show the thresholds for each multi-state monitor displayed in the live graphs display area by enabling the View > Display thresholds option.This option is enabled by default.

If a graph does not include values that are near or exceed either of the thresholds, enabling this option allows you to see how close a monitor is to its threshold values while disabling the option allows you to view more detail on the monitor’s trends.

The difference between the two can be seen in the two graphs of the same monitor that are shown below: