ZyXEL Communications ES-2024 Series, Руководство пользователя, Страница: 83 / 282

Chapter 8 Basic Setting
ES-2024 Series User’s Guide
83
8.8.1 PoE Setup
Use this screen to set the priority levels for the Switch in distributing power to PDs.
Click the
PoE Setup link in the Basic Setting > PoE Status screen. The following screen
opens.
Class This shows the IEEE 802.3af 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.
•
Class 0 - Default, 0.44 to 12.94
• Class 1 - Optional, 0.44 to 3.84
• Class 2 - Optional , 3.84 to 6.49
• Class 3 - Optional, 6.49 to 12.95
• Class 4 - Reserved (PSEs classify as Class 0)
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.
•
Critical has the highest priority.
• High has the Switch assign power to the port after all critical priority ports are
served.
• Low has the Switch assign power to the port after all critical and high priority ports
are served.
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.
Max Current
(mA)
This field displays the maximum amount of current drawn by the PD from the Switch
on this port.
Table 12 Basic Setting > PoE Status (continued)
LABEL DESCRIPTION