D-Link DGS-3130 Emulator - Page 602

DGS-3130 Layer 3 Stackable Managed Switch CLI Reference Guide If the policy preempt setting is enabled, then the power provisioned to PD with lower priority can be preempted in order to release power to the new connected PD with higher priority. Example This example shows how to configure at the priority of eth 3/0/1 to the first priority. Switch(config)# interface eth3/0/1 Switch(config-if)# poe pd priority critical Switch(config-if)# end Switch(config)# 56-4 poe policy preempt This command is used to enable disconnection of PD which is power-provisioned with lower priority in order to release the power to the new connected PD with higher priority under power shortage condition. Use the no form of the command to reset to default setting. poe unit UNIT-ID policy preempt no poe unit UNIT-ID policy preempt Parameters UNIT-ID (Optional) Specify the unit to display. Default By default, this option is disabled. Command Mode Global configuration mode. Command Default Level Level: 12. Usage Guideline Since the power budget is limited, as more PDs are added to the system, the power source may not be sufficient to supply the power. The PoE system enters the power critical section when the remaining power budget is not enough to serve the new added PD. The poe policy preempt command configures whether to disconnect the PD which is powered with lower priority in order to release the power to the new connected PD with higher priority under power shortage condition. If the policy preempt setting is disabled, then the policy is first in first serviced. Thus the new PD will not be serviced if the power budget is running out. If the policy preempt setting is enabled, then the power provisioned to PD with lower priority can be preempted to release the power to the new connected PD with higher priority. Example This example shows how to configure PoE system power service policy preemptive mode. Switch(config)# poe policy preempt 598