ZyXEL Communications GS1920-48HPv2, Руководство пользователя

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Chapter 8 Basic Setting
GS1920v2 Series User’s Guide
89
The following table describes the labels in this screen.
8.8.2 Po E Tim e Ra ng e Sta tus
Use this screen to see whether PoE is scheduled to be enabled on a port.
Click the
Po E Tim e Ra ng e Sta tus
link in the
Ba sic Se tting > Po E Se tup
screen. The following screen opens.
Table 19 Basic Setting > PoE Setup
LABEL DESC RIPTIO N
PoE Mode This field displays the power management mode used by the Switch, whether it is in
C la ssific a tio n
or
C o nsum ptio n
mode.
Total Power (W) This field displays the total power the Switch can provide to the connected PoE-enabled
devices on the PoE ports.
Consuming
Power (W) This field displays the amount of power the Switch is currently supplying to the connected PoE-
enabled devices.
Allocated Power
(W) This field displays the total amount of power the Switch has reserved for PoE after negotiating
with the connected PoE device(s).
C o nsum ing Po we r (W)
can be less than or equal but not more than the
Allo c a te d Po we r (W)
.
Remaining
Power (W) This field displays the amount of power the Switch can still provide for PoE.
Note: The Switch must have at least 16 W of remaining power in order to supply
power to a PoE device, even if the PoE device needs less than 16W.
Port This is the port index number.
State This field shows which ports can receive power from the Switch. You can set this in Section 8.8.3
on page 90 .
•
Disa b le
- The PD connected to this port cannot get power supply.
•
Ena b le
- The PD connected to this port can receive power.
Class This shows the power classification of the PD.
This is a number from 0 to 4, where each value represents a range of power (W) and power
current (mA) that the PD requires to function. The ranges are as follows.
•
C la ss 0
- Default, 0.44 to 12.94
•
C la ss 1
- Optional, 0.44 to 3.84
•
C la ss 2
- Optional, 3.84 to 6.49
•
C la ss 3
- Optional, 6.49 to 12.95
•
C la ss 4
- Reserved (PSEs classify as Class 0) in a Switch that supports IEEE 802.3af only.
Optional, 12.95 to 25.50 in a Switch that supports IEEE 802.3at.
PD Priority When the total power requested by the PDs exceeds the total PoE power budget on the Switch,
you can set the PD priority to allow the Switch to provide power to ports with higher priority first.
•
C ritic a l
has the highest priority.
•
Hig h
has the Switch assign power to the port after all critical priority ports are served.
•
Lo w
has the Switch assign power to the port after all critical and high priority ports are
served.
Power-Up This field displays the PoE standard the Switch uses to provide power on this port.
Consuming
Power (mW) This field displays the current amount of power consumed by the PD from the Switch on this port.
Max Power
(mW) This field displays the maximum amount of power the PD could use from the Switch on this port.