With the Switch Bandwidth Graphs window, you can:
The bandwidth graph provides an estimate of the traffic flowing through the switch. It reports bandwidth usage (in Mbps) dynamically at intervals specified in the user settings. You can change this setting by selecting System > User Settings.
To refresh device report information, click Refresh on the bandwidth graph window.
Note: You can change the polling interval (frequency for collecting the data displayed on bandwidth graphs) by selecting System > User Settings from the menu bar. For more information, click Help on the User Settings window.