94 Rockwell Automation Publication 1783-UM003G-EN-P - December 2012
Chapter 3 Manage the Switch via the Device Manager Web Interface
The Trends dialog box displays these graphs.
Trends Graphs
Graph Description
Bandwidth utilization graph The Bandwidth Utilization graph shows the same information as the Bandwidth Used gauge on the
Dashboard, but 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.
Packet error graph The Packet Error graph shows the same information as the Packet Error gauge on the Dashboard, but
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.
Per-port utilization and per-port errors graphs The Port Utilization and Port Errors graphs on the Trends dialog box show the same information as the
Port Utilization and Port Errors graphs on the Dashboard, but the graphs on the Trends dialog box can
show 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 trends for a specific port, choose a port from the Port list.
Use these graphs 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 personal computer is connected, and use the Port Errors graph to see if
the port is receiving or sending error packets.
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