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.
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
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.
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
Refresh on the toolbar.
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 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.
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.
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