H3C Technologies H3C S7500E Series Switches - Manual (Page 106)

5-7
To do… Use the command… Remarks
Enable the PSE to detect
nonstandard PDs
poe legacy enable pse pse-id
Required
By default, the PSE can detect
standard PDs rather than non
standard PDs.
Configuring the PoE Power
Configuring the Maximum PoE Power
The maximum PoE power refers to the maximum power that the device can provide to all PSEs.
The maximum PoE power is determined by the specifications of PoE power supply and user
configuration through command lines.
z Specifications of PoE power supply: PSEs are powered by PoE power supply. The PoE
power supply of a device has its maximum output power (assuming the value is M1), which
is the hardware factor determining the maximum PoE power.
z User configuration through command lines: PoE power supply has self-protection
mechanism, with which hardware protection measures will be taken (for example, stopping
power supply to all PSEs) in case of PoE power overload. To avoid possible hardware
protection, the device allows you to configure a maximum PoE power (assuming the value
is M2, which should be lower than M1). When the PoE power supply is to reach the
overload state before hardware protection occurs, the system takes software protection
measures (for example, disabling PoE of PSE or shutting down the power supply to PSE
with a specific priority).
The actually effective maximum PoE power is the smaller one between M1 and M2, that is
min(M1,M2).
When the maximum PoE power is changed, the system will re-allocate power according to
power supply priority of PSEs. A PSE with a higher priority gets power supply first. For the
PSEs with the same priority, the one with smaller PSE ID takes precedence.
Follow these steps to configure the maximum PoE power:
To do… Use the command… Remarks
Enter system view system-view —
Configure the maximum PoE
power
poe power max-value
max-power
Optional
The default maximum PoE
power is 6720.
Configure the maximum PoE
power (distributed IRF device)
poe power chassis
chassis-number max-value
max-power
Optional
The default maximum PoE
power is 6720.