Collecting chart information
Chart displays are limited to numerical time-dependent information; therefore, MIB objects such as IP addresses, octet strings, hardware addresses, bitfields, enumerated integers, and different constant integers are not candidates for chart requests. In general, three types of variables do not fit well in charts:
Non-numerical variables that cannot be displayed in any reasonable way in the chart format (e.g., names).
Constants: change of a value in time (the differential of the value) will always be equal to zero.
Table objects are not displayed in charts.
Chart requests are created and modified using the MIB Editor. See The MIB Editor for details.
To receive chart information from an agent, select the Charts tree item in the SNMP Agent Requests area. Then double-click on the chart you would like to view. This will display the chart in the current agent information window if one is open, or will open a new agent information window if one is not currently running.
When you select a chart request, SNMP Extension begins polling the agent. You can define the length of the request period and define chart display parameters by right-clicking on the chart and selecting Chart Properties. See .
Chart information can be saved from the agent window. You can save the chart data in a file then import it into a spreadsheet program (e.g., Microsoft Excel or Lotus 1-2-3).
Customizing charts
Note: When changes are made to a chart from the Chart Properties display window, the changes are effective for the present session only. Persistent changes must be made to the chart from the MIB Editor.
1. When agent information is displayed in chart format, several options are available for customizing the display. To define the following settings, right-click on the chart and select Chart Properties.