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Power Over Ethernet (PoE/PoE+) Operation
Displaying the Switch’s Global PoE Power Status
Displaying PoE Status on All Ports
Syntax: show power-over-ethernet brief
Displays the following port power status:
• PoE Port: Lists all PoE-capable ports on the switch.
• Power Enable: Shows Yes for ports enabled to support PoE (the
default) and No for ports on which PoE is disabled.
• Power 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.)
• Alloc by: Displays how PoE is allocated (usage, class, value)
• Alloc Power: The maximum amount of PoE power allocated
for that port (expressed in watts). Default: 17W for PoE; 33W
for PoE+.
• Actual Power: The power actually being used on that port.
• Configured Type: If configured, shows the user-specified
identifier for the port. If not configured, the field is empty.
• Detection Status:
– Searching: The port is trying to detect a PD connection.
– Delivering: The port is delivering power to a PD.
– Disabled: On the indicated port, either PoE support is
disabled or PoE power is enabled 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.
• Power Class: Shows the 802.3af power class of the PD detected
on the indicated port. Classes include:
0: 0.44w to 12.95w 3: 6.49w to 12.95w
can be drawn by the
4: For PoE+; up to 25.5 watts
PD. Default class.
can be drawn by the PD.
1: 0.44w to 3.84w
2: 3.84w to 6.49w
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