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DES-3028 DES-3028P DES-3052 DES-3052P Layer 2 Fast Ethernet Switch CLI Reference Manual
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POE COMMANDS
DES-3028P and the DES-3052P support Power over Ethernet (PoE) as defined by the IEEE 802.3af specification. Ports 1-24
supply 48 VDC power to PDs over Category 5 or Category 3 UTP Ethernet cables. The DES-3028P and the DES-3052P follow
the standard PSE pinout Alternative A, whereby power is sent out over pins 1, 2, 3 and 6. The DES-3028P and the DES-3052P
works with all D-Link 802.3af capable devices.
The DES-3028P and the DES-3052P include the following PoE features:
d) The auto-discovery feature recognizes the connection of a PD (Powered Device) and automatically sends power to it.
e) 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.
f) The active circuit protection feature automatically disables the port if there is a short. Other ports will remain active.
PDs receive power according to the following classification:
Class Max power used by PD
0 0.44 to 12.95W
1 0.44 to 3.84W
2 3.84 to 6.49W
3 6.49 to 12.95W
PSE provides power according to the following classification:
Class Max power provided by PSE
0 15.4W
1 4.0W
2 7.0W
3 15.4W
The PoE commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the following
table.
Command Parameters
config poe system {power_limit <value 37-370> | power_disconnect_method
[deny_next_port | deny_low_priority_port]}
config poe ports [all | <portlist>] {state [enable | disable] | priority [critical | high |
low] | power_limit [class_0 | class_1 | class_2 | class_3 |
user_define <value 1000-16800>]}
show poe [system | ports {<portlist>}]
NOTE: The maximum PoE power limit for the DES-3028P is 185W and the maximum
PoE power limit for the DES-3052P 370W.
Each command is listed in detail in the following sections.
config poe system
Purpose
Used to configure the parameters for the whole PoE system.
Syntax config poe system {power_limit <value 37-370> |
power_disconnect_method [deny_next_port |
deny_low_priority_port}
Allows the user to configure the parameters for the whole PoE
t
Description
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