Configuring The Poe Power; Configuring The Maximum Poe Interface Power; Configuring Poe Power Management; Configuring Poe Interface Power Management - HP 5820X Switch Configuration Manual

Configuring the PoE power

Configuring the maximum PoE interface power

The maximum PoE interface power is the maximum power that the PoE interface can provide to the
connected PD. If the power required by the PD is larger than the maximum PoE interface power, the PoE
interface will not supply power to the PD.
To configure the maximum PSE power:
To do...
1. Enter system view.
2. Enter PoE interface view.
3. Configure the maximum
power for the PoE interface.

Configuring PoE power management

PoE power management involves PSE power management and PoE interface power management.

Configuring PoE interface power management

The power supply priority of a PD depends on the priority of the PoE interface. The priority levels of PoE
interfaces are critical, high and low in descending order. Power supply to a PD is subject to PoE interface
power management policies.
All PSEs implement the same PoE interface power management policies. When a PSE supplies power to a
PD, the following actions occur:
• If the PoE interface power management is not enabled, no power will be supplied to a new PD
when the PSE power is overloaded.
If the PoE interface power management priority policy is enabled, the PD with a lower priority is first
•
powered off to guarantee the power supply to the PD with a higher priority when the PSE power is
overloaded.
NOTE:
19 watts guard band is reserved for each PoE interface on the device to prevent a PD from being
•
powered off because of a sudden increase of the PD power. When the remaining power of the PSE
where the PoE interface resides is lower than 19 watts and no priority is configured for the PoE
interface, the PSE does not supply power to the new PD; when the remaining power of the PSE where
the PoE interface resides is lower than 19 watts, but priority is configured for the PoE interface, the
interface with a higher priority can preempt the power of the interface with a lower priority to ensure
the normal working of the higher priority interface.
If the sudden increase of the PD power results in PSE power overload, power supply to the PD on the
•
PoE interface with a lower priority will be stopped to ensure the power supply to the PD with a higher
priority.
Use the command...
system-view
interface interface-type interface-
number
poe max-power max-power
89
Remarks
—
—
Optional.
30000 milliwatts by default.