Poe Configuration - D-Link xStack DES-3800 Series User Manual

PoE Configuration

DES-3828P supports Power over Ethernet (PoE) as defined by the IEEE 802.3af specification. Ports 1-
24 can supply 48 VDC power to PDs over Category 5 or Category 3 UTP Ethernet cables. DES-3828P
follows the standard PSE pinout Alternative A, whereby power is sent out over pins 1,2,3 and 6. DES-
3828P works with all D-Link 802.3af capable devices. The Switch also works in PoE mode with all
non-802.3af capable D-Link AP, IP Cam and IP phone equipment via DWL-P50.
DES-3828P includes the following PoE features:
Auto-discovery recognizes the connection of a PD and automatically sends power to it.
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The Auto-disable feature will occur under two conditions: first, if the total power
•
consumption exceeds the system power limit; and second, if the per port power consumption
exceeds the per port power limit.
Active circuit protection automatically disables the port if there is a short. Other ports will
•
remain active.
PDs receive power according to the following classification:
PSE provides power according to the following classification:
To configure the PoE features on DES-3828P, click Administation > PoE Configuration. The PoE
System window is used to assign a power limit and power disconnect method for the whole PoE
system. To configure the Power Limit for the PoE sytem enter a value between 37W and 370W in the
Power Limit field. The default setting is 370 W. When the total consumed power exceeds the power
limit, the PoE controller (located in the PSE) disconnects the power to prevent overloading the power
supply. The PoE controller uses either Deny next port or Deny low priority port to implement the
disconnectection. Use the drop down menu to selecet a Power Disconnect Method method. The
default for the Power Disconnect Method is Deny next port. Both Power Disconnection Methods are
described below:
Parameter
Deny Next Port
xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
Class Usage
0 Default
1 Optional
2 Optional
3 Optional
4 Not allowed
Class Usage
0 Default
1 Optional
2 Optional
3 Optional
4 Reserved
Description
After the power limit has been exceeded, the next port attempting to power up is denied,
regardless of its priority.
Max power used by PD
0.44 to 12.95W
0.44 to 3.84W
3.84 to 6.49W
6.49 to 12.95W
Reserved
Max power used by PD
15.4W
4.0W
7.0W
15.4W
15.4W
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