90 Rockwell Automation Publication 1783-UM003G-EN-P - December 2012
Chapter 3 Manage the Switch via the Device Manager Web Interface
Switch Information
The Switch Information area on the Dashboard displays this information about
the switch, as described in the following table.
Bandwidth Used Gauge
The Bandwidth Used gauge shows the total percentage of the switch bandwidth
being used. Each bar in the gauge represents 10%, and does not show increments
that are less than 10%. The gauge does not show total bandwidth under 5%.
Data is collected at each 60-second system refresh. The Bandwidth Used gauge
changes as the switch experiences the network activity from devices sending data
through the network. As network activity increases, so does contention between
devices to send data through the network. As you monitor utilization on the
switch, note whether the percentage of usage is what you expect during that given
time of network activity. If utilization is high when you expect it to be low,
perhaps a problem exists.
As you monitor the switch, note if the bandwidth utilization is consistently high.
This can mean there is congestion in the network. If the switch reaches its
maximum bandwidth (above 90% utilization) and its buffers become full, it
begins to discard the data packets that it receives. Some packet loss in the network
is not considered unusual, and the switch is configured to help recover lost
packets (such as by signaling to other devices to resend data). However, excessive
packet loss can create packet errors, which can degrade overall network
performance.
Dashboard Settings
Field Description
Host Name The name (Host Name) of this switch configured during the initial setup. If no name was provided, this field displays the default
name, Switch.
IP Address The IP address of this switch configured during the initial setup.
MAC Address The MAC address of this switch. This information cannot be changed.
Product ID The model of this switch. This information cannot be changed.
CIP Revision The switch's firmware revision, as reported by the CIP protocol object. This information cannot be changed.
CIP Serial No The serial number of this switch. This information cannot be changed.
Hardware Rev The hardware revision of the switch. This information cannot be changed.
Software The Cisco IOS release that this switch is running. This information is updated when you upgrade the switch firmware.
Contact The name of the person who is the administrative contact for this switch. This information is set from the SNMP dialog box.
Location The location of this switch. This information is set from the SNMP dialog box.
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