Trends

How Trends Graphs Can Help You Monitor the Switch:

Tips on Using this Window:

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.

  • If you are using the trends graphs to monitor the switch status over time, do not end your device manager session.
  • Move the pointer over the bars in a graph for the specific percentages.
  • Data retrieved from the latest refresh cycle always appears in the last column.
  • Click Refresh to update the information displayed. The information on this window is automatically updated at each system refresh (every 60 seconds).

Back to the Top

Why Use the Trends Graphs

Use the historical trends graphs to display the switch bandwidth, the port usage, and the percentage of packet errors detected by the switch. You can display the data in increments of seconds, minutes, hours, and days. The level of detail provided these graphs can help you to analyze traffic patterns and to identify problems with the switch and individual ports.

Back to the Top

Bandwidth Utilization Graph

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 Bandwidth Utilization graph shows the same information as the Bandwidth Used gauge on the Dashboard, but that the graph can show the bandwidth usage patterns over incremental instances in time (by 60 seconds, 60 minutes, 24 hours, or 14 days). This graph also marks the highest peak reached. The default is 60 seconds.

If you see sharp increases in switch usage, use this graph to determine when unusual peaks in network usage occur. For more information about the bandwidth usage, see Bandwidth Used Gauge.

Back to the Top

Packet Error Graph

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.

Back to the Top

Port Utilization Graph

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.

Back to the Top