Configuring The Poe Monitoring Function - HP 5500 EI Series Configuration Manual

• If the priority-based power management policy is enabled for PoE interfaces, low-priority PoE
interfaces are disconnected to guarantee power for high-priority and critical-priority PoE interfaces.
The guaranteed remaining PoE power is the maximum PoE power minus the power allocated to the
critical PoE interface, regardless of whether PoE is enabled for the PoE interface. If this is lower than the
maximum power of the PoE interface, you cannot set the power priority of the PoE interface to critical.
Otherwise, you can set the power priority to critical, and this PoE interface preempts the power of the PoE
interface that has a lower priority level. In this case, the PoE interface whose power is preempted is
disconnected, but its configuration remains unchanged. If you change the priority of the PoE interface
from critical to a lower level, the PDs connecting to other PoE interfaces have an opportunity to be
powered.
A guard band of 19 watts is reserved for each PoE interface on the device to prevent a PD from being
powering off because of a sudden increase of power. If the remaining power of the PSE is lower than 19
watts and no priority is configured for a PoE interface, the PSE does not supply power to the new PD. If
the remaining power of the PSE is lower than 19 watts, but priorities are configured for PoE interfaces, the
PoE interface that has a higher priority can preempt the power of a PoE interface that has a lower priority
to ensure normal operation of the higher priority PoE interface.
If a sudden increase of the PD power results in PSE power overload, power supply to the PD on the PoE
interface that has a lower priority is stopped to ensure power supply to the PD that has a higher priority.
Configuration prerequisites
Enable PoE for PoE interfaces.
Configuration procedure
To configure PoE interface power management:
Step
1. Enter system view.
2. Enable the priority-based
power management policy for
PoE interfaces.
3. Enter PoE interface view.
4. Configure the power supply
priority for a PoE interface.

Configuring the PoE monitoring function

With the PoE monitoring function enabled, the system monitors the parameter values related to PoE
power supply, PSE, PD, and device temperature in real time. When a specific value exceeds the limited
range, the system automatically takes self-protection measures.
Command
system-view
poe pd-policy priority
interface interface-type
interface-number
poe priority { critical | high | low }
170
Remarks
N/A
By default, this policy is disabled.
N/A
Optional.
By default, low is the power supply
priority for the PSE.