information for five frequency intervals, such as five weeks if weeks was selected from the Frequency
7.Click OK.
The trending information is displayed in the chart.
NOTE: If there is not enough data to display, Performance Manager does not display the chart. For example, if you selected the weekly option from Frequency
Performance Manager does not display a chart if there is not enough data and the trending number is ignored.
Removing Performance Data from a GraphTo remove multiple data from a performance graph:
1.Access Performance Manager as described in ”Accessing Performance Manager” on page 492.
2.In Performance Manager, click the graph you want to modify in the
3.Click the Edit Chart Property (
) button in the lower pane.
4.In the Performance Graphic Editing Dialog window, click the 
button corresponding with the data you want to remove from the graph.
5.When you are asked if you want to remove the data, click Yes.
6.Click OK.
7.Click the 
button in the lower pane.
You can format the graph to provide data within a custom time period. This feature can be extremely useful for pinpointing performance changes. For example, assumed you changed the firmware of a switch two weeks ago and you want to compare the performance of that switch before and after you changed its firmware. You could create a graph that provides performance data two weeks before you changed the firmware. You could then create another graph that provides performance data two weeks after you changed the firmware.
IMPORTANT: If you change the date in the field to a date that does not exist in a month, the software automatically calculates the date to the next month. For example, if you enter 2003/11/31, the software assumes the date is 2003/12/01.
To set a custom period:
1.Access Performance Manager as described in ”Accessing Performance Manager” on page 492.
2.Click the element for which you want to see its performance.
498 Viewing Performance Data