| Trends |
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To display the Trends window, either • Choose Monitor > Trends. • Click View Trends from the Dashboard. The Trends window has real-time graphs that display historical trends. These trends can help you analyze traffic patterns and identify problems with the switch and individual ports. • Power (PoE) Utilization Graph Move the pointer over the bars in the graphs for the specific percentages. The graphs show data collected at each system refresh
(up to ten 60-second refresh cycles). To manually refresh the graphs,
click
Note Using the Refresh option from your
browser reloads the device manager and clears the graphs. If you want
to update, not clear, the graphs, click
The Bandwidth Utilization graph shows the same information as the Bandwidth Used gauge on the Dashboard. The percentage of utilization is shown over ten 60-second system refresh cycles. Look for sharp increases in utilization, which can mean an abnormal condition. For example, a faulty device can be sending broadcast storms to the switch. For more information about bandwidth utilization, see Bandwidth Used Gauge. The Packet Error graph shows the same information as the Packet Error gauge on the Dashboard. The percentage of packet errors collected is shown over ten 60-second system refresh cycles. For more information about packet errors, see Packet Error Gauge. The PoE Utilization graph is available only if the switch is a Power over Ethernet (PoE) switch. This graph shows the same information as the PoE Utilization gauge on the Dashboard. The percentage of power allocated is shown over ten 60-second system refresh cycles. For more information about power allocation, see Power (PoE) Gauge. The Port Utilization graph shows the same information as the Port Utilization graph on the Dashboard. The percentage of packet errors collected is shown on a per-port basis and for up to ten 60-second system refresh cycles. For more information about port utilization, see Port Utilization Graph. To display the utilization trend for a specific port, choose a port from the Connected Port list. This list only displays ports that are connected to another device. |
Refresh on the toolbar. After 10 refresh cycles, the data in
the graphs shifts to the left. Data retrieved from the latest refresh
cycle always appears in the tenth column.