D-Link DGS-6600-48T Product Manual - Page 479

DGS-6604 m poe service-policy poe service-policy Use the command to configure power service policy for whole system's usage under power shortage condition. poe service-policy { preemptive | non-preemptive } Syntax Description non-preemptive The power will not be provided to the new PD connected port regardless of port priority setting if the unit enters into critical section. preemptive If there are ports that have been provided with power with a lower priority than the new PD connected port and there comes power shortage, the connected PD port with the lowest priority will be disconnected. This process will be performed continuously until enough power is released for the new connected higher priority port or no available PD port can be disconnected. Default Command Mode Usage Guideline Example non-preemptive. Global configuration. The PoE system has a limited power watts referred as power budget. Once the used power almost reaches the power budget limit, this condition is referred as power critical section. The service policy is used to determine the power service behavior as PoE power system enters the critical section. If the PoE system is configured with non-preemptive, no additional port can be serviced with power once the PoE system enter critical section. However if the preemptive mode is configured, additional port can be powered up with a cross-unit power management as long as its priority is higher than all other serviced ports. In the situation of containing units which is not PoE capable in the system, there will be a message displayed for reminding those units will not take effect with this command. This example shows how to configure POE system power service policy as nonpreemptive mode. Switch(config)# poe service-policy non-preemptive You can verify your settings by entering the show poe power system command. CLI Reference Guide 469