Advanced PoE power control

摘要

A power sourcing equipment (PSE) device including a power over Ethernet (PoE) interface. A processor is coupled to the PoE interface. A memory is coupled to the processor and includes instruction that, when executed by the processor, cause the processor to perform a number of functions. The processor may supply power at a first power level to a PD that is coupled to the PoE interface. The processor may then determine an actual power consumption of the PD. The processor may then send a first Link Layer Discovery Protocol (LLDP) packet to the PD over the PoE interface that includes first proposed power level information that is based on the actual power consumption of the PD. Then processor may then supply power to the PD at a second power level that is different from the first power level.

主权项

1. A power sourcing equipment (PSE) device, comprising:
a power over Ethernet (PoE) interface; a processor coupled to the PoE interface; a memory coupled to the processor and including instruction that, when executed by the processor, cause the processor to:
supply power at an initial power level to a PD that is coupled to the PoE interface;determine a first actual power consumption of the PD;send a first Link Layer Discovery Protocol (LLDP) packet to the PD over the PoE interface that includes first proposed power level information that is based on the first actual power consumption of the PD;supply power to the PD at a first power level that is associated with the first proposed power level information and that is different from the initial power level;receive a second LLDP packet from the PD through the PoE interface subsequent to sending the first LLDP packet, wherein the second LLDP packet includes second proposed power level information that is associated with a second power level that is different from the first power level; andsupply power to the PD at the second power level in response to receiving the second LLDP packet.