Power over Ethernet
Configuring PoE Port Settings
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x 129
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The following counters are displayed for each device:
• Max Power Allocation—Displays the maximum amount of power in
milliwatts assigned to the PD connected to the selected port. In Class Limit
mode, the value of the maximum power allocation will be determined on the
class detection of PD connected, 15.4 w (802.3af, class 0 to 3), and 30 W
(802.3at, class 4). In Power Limit mode, the value of maximum power
allocation is 30 W.
• Power Consumption—Displays the amount of power in milliwatts assigned
to the powered device connected to the selected port.
• Class—Displays the class information of the PD connected if the power
mode is Class Limit.
• Overload Counter—Displays the total number of power overload
occurrences.
• Short Counter—Displays the total number of power shortage occurrences.
• Denied Counter—Displays the number of times that the powered device
was denied power.
• Absent Counter—Displays the number of times that the power was
stopped to the powered device because the powered device was no longer
detected.
• Invalid Signature Counter—Displays the times that an invalid signature was
received. Signatures are the means by which the powered device identifies
itself to the PSE. Signatures are generated during powered device
detection, classification, or maintenance.
STEP 4 Click Apply. The PoE port settings are defined, and the Running Configuration is
updated.
Class Maximum Power Delivered by Switch Port
Class 0 15.4 W
Class 1 4.0 W
Class 2 7.0 W
Class 3 15.4 W
Class 4 30.0 W
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