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Power Over Ethernet (PoE/PoE+) Operation
Displaying the Switch’s Global PoE Power Status
Displaying the PoE Status on Specific Ports
Syntax: show power-over-ethernet <port-list >
Displays the following PoE status and statistics (since the last
reboot) for each port in <port-list >:
• Power Enable: Shows Yes for ports enabled to support PoE (the
default) and No for ports on which PoE is disabled. Note that
for ports on which power is disabled, this is the only field
displayed by show power-over-ethernet < port-list >.
• Priority: Lists the power priority (Low, High, and Critical)
configured on ports enabled for PoE. (For more on this topic,
refer to the power command description under “Configuring
PoE Operation” on page 11-8.)
• Allocate by: How PoE is allocated (usage, class, value)
• Detection Status:
– Searching: The port is available to support a PD.
– Delivering: The port is delivering power to a PD.
– Disabled: PoE power is enabled on the port but the PoE
module does not have enough power available to supply
the port’s power needs.
– Fault: The switch detects a problem with the connected PD.
– Other Fault: The switch has detected an internal fault that
prevents it from supplying power on that port.
• Over Current Cnt: Shows the number of times a connected PD
has attempted to draw more than 15.4 watts for PoE or 24.5
watts for PoE+. Each occurrence generates an Event Log
message.
• Power Denied Cnt: Shows the number of times PDs requesting
power on the port have been denied due to insufficient power
available. Each occurrence generates an Event Log message.
• Voltage: The total voltage, in Volts, being delivered to PDs.
• Power: The total power, in Watts, being delivered to PDs.
• LLDP Detect: Port is enabled or disabled for allocating PoE
power based on the link-partner’s capabilities via LLDP
• Configured Type: If configured, shows the user-specified
identifier for the port. If not configured, the field is empty.
• Value: The maximum amount of PoE power allocated for that
port (expressed in watts). Default: 17W for PoE; 33W for
PoE+
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