Poe Priority - Huawei Quidway S3900 series Command Manual

Command Manual – PoE & PoE Profile
Quidway S3900 Series Ethernet Switches-Release 1510
[Quidway] undo poe power-management
Auto Power Management is enabled

1.1.10 poe priority

Syntax
poe priority { critical | high | low }
undo poe priority
View
Ethernet port view
Parameter
critical: Set the port priority to critical.
high: Set the port priority to high.
low: Set the port priority to low.
Description
Use the poe priority command to configure the PoE priority of a port.
Use the undo poe priority command to restore the default PoE priority.
By default, the PoE priority of a port is low.
When the available power of the PSE is too small, the PoE priority and the PoE
management mode are used together to determine how to allocate PoE power for the
new PDs.
When the manual PoE management mode is adopted:
The switch will not supply power to the new PDs if the available power of the PSE is
less than 18.8 W.
When the auto PoE management mode is adopted:
If a PD is plugged into the port with higher priority when the available power of the PSE
is less than 18.8 W, the power supply to the port with the smallest number in the port
group with the lowest priority is turned off, so that a part of power is released for the new
PD.
Example
# Set the port priority to critical.
<Quidway>system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface Ethernet 1/0/3
[Quidway-Ethernet1/0/3] poe priority critical
Huawei Technologies Proprietary
1-11
Chapter 1 PoE Configuration Commands