HP PROCURVE 2520, Management And Configuration Manual

Page: 257 / 544

Power Over Ethernet (PoE) Operation
Viewing PoE Configuration and 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 .
• 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 11-6.)
• Allocate By:
How PoE is allocated (
usage
,
class
,
value
)
• Detection Status:
– Searching:
The port is available to support a PD connection.
–
Delivering:
The port is delivering power to a PD.
–
Disabled:
PoE support is disabled on the port. To re-enable
PoE support, refer to “Configuring PoE Operation” on
page 11-6.
– Fault: The switch detects a problem with the connected PD.
• Over Current Cnt: Shows the number of times a connected PD
has attempted to draw more than 15.4 watts. 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:
Shows the type of PD detected on the port.
• Value:
The maximum amount of PoE power allocated for that
port (expressed in watts). Default 17W for PoE.
•
Power Class:
Shows the power class of the PD detected on the
indicated port.
• MPS Absent Cnt:
This value shows the number of times a
detected PD has no longer requested power from the port.
Each occurrence generates an Event Log message. (“MPS”
refers to the “Maintenance Power Signature”. Refer to
“Terminology” on page 11-3.)
• Short Cnt:
Shows the number of times the switch provided
insufficient current to a connected PD.
• Current: The total current, in mA, being delivered to PDs.
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