xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch CLI Manual
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P
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OMMANDS
DES-3828P supports 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. 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.
DES-3828P includes the following PoE features:
The auto-discovery feature recognizes the connection of a PD (Powered Device) and automatically sends power to it.
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.
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
show poe ports
{<portlist>}
Each command is listed in detail in the following sections.
