trends

| Trends
How Trends Graphs Can Help You Monitor the Switch: Why use the trends graphs Bandwidth Utilization Graph Packet Error Graph PoE Utilization Graph Port Utilization Graph 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 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 Top ### Bandwidth Utilization Graph 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 Top ### Packet Error Graph The Packet Error graph shows the same information as the Packet Error gauge on the Dashboard, but that the graph can show the percentage of packet errors collected over incremental instances in time (by 60 seconds, 60 minutes, 24 hours, or 14 days). The default is 60 seconds. Use this graph to audit the affects that connected devices have on the switch performance or the network. For example, if you suspect that a connected device is sending error packets, you can verify if the data on the graph changes when you disconnect and reconnect the suspected device. For more information about packet errors, see Packet Error Gauge. Back to Top ### Power (PoE) Utilization Graph The PoE Utilization graph is available 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 PoE Gauge. Back to Top ### Port Utilization Graph The Port Utilization graph shows the same information as the Port Utilization graph on the Dashboard. The usage patterns of a specific port over incremental instances in time (by 60 seconds, 60 minutes, 24 hours, or 14 days). The default is 60 seconds. To display the utilization trend for a specific port, select a port from the Connected Port list. This list only displays ports that are connected to another device. Use this graph to observe the performance of a specific port. For example, if a network user is having intermittent network connectivity, use the Port Utilization graph to observe the traffic patterns on the port to which the user's PC is connected. For more information about port utilization, see Port Utilization Graph. Back to Top