282CHAPTER 7: MONITORING THE NETWORK

For other devices the hierarchy lists the device as the top-level folder and the known links to the device as nodes below that.

Selecting the top-level folder, which is the default, changes the displayed live graphs on the right-hand side of the display to graphs of the monitors that monitor the general state of the device.Selecting a link node changes the displayed live graphs on the right-hand side of the display to graphs of the monitors that monitor the state of the link.

When you launch the Live Graphs window for a link, the tree lists the link as the top-level folder, and the right-hand side of the display shows live graphs for all of the link’s monitors.

Live Graphs Display The live graphs display area, on the right-hand side, shows live graphs for the states of the monitors relevant to the item selected in the tree.Each monitor’s entry shows the name of the monitor that the graph is for and the graph itself:

Figure 126 Live Graph Display

The graph displays the historical state of the monitor. For example, for the IP Ping Service monitor, the graph displays a history of the IP ping response time for the device.

A history for each monitor is maintained, by default, for ten minutes. This stored data allows you to instantly see the most recent ten minutes of activity on any monitor, at any time. This may be useful in helping to determine the network activity immediately preceding a current network problem.

If you launch the Live Graphs window within 10 minutes of starting monitoring against a device or link, you will only see data for the time that the device or link has been monitored. When you stop monitoring against a device or link, 3Com Network Director will discard all maintained data against the device or link.

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HP Network Direr Software Products manual Live Graph Display