HP PROCURVE 2520, Руководство по управлению и настройке

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Power Over Ethernet (PoE) Operation
Viewing PoE Configuration and Status
Viewing PoE Configuration and Status
Displaying the Switch’s Global PoE Power Status
Syntax: show power-over-ethernet
Displays the switch’s global PoE power status, including:
•
Pre-standard Detect
: Shows whether PoE for
pre-802.3af-standard powered devices is enabled on
the switch. (Default:
Off
; shows
On
when PoE for
pre-802.3af-standard powered devices has been
enabled.)
•
Operational Status:
Indicates whether PoE power is avail­
able on the switch. (Default: On ; shows Off if PoE power
is not available. Shows
Faulty
if internal or external PoE
power is oversubscribed or faulty.)
• Usage Threshold (%) : Lists the configured percentage of
available PoE power provisioning the switch must
exceed to generate a usage notice in the form of an Event
Log message and an SNMP trap. If this event is followed
by a drop in power provisioning below the threshold, the
switch generates another SNMP trap and Event Log
message. Event Log messages are also sent to any
optionally configured debug destinations. (Default:
80%
)
• Total Available Power: Lists the maximum PoE wattage
available to provision active PoE ports on the switch.
This is the amount of usable power for PDs.
• Total used Power: The power used by the PDs.
•
Total Remaining Power:
Lists the amount of PoE power
still available .
For example, in the default PoE configuration, when the switch is running
with several ports supporting PD loads,
show power-over-ethernet displays data
similar to the following:
11-16