User manual

Publication 1783-UM003D-EN-E - December 2009 95
Chapter 3
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.
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 version 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.