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发明授权
CN106034032B 一种以太网供电方法和装置 有权

一种以太网供电方法和装置
摘要：
本发明实施例提供了一种以太网供电方法，设备和系统，PSE检测确定以太网双绞线的第一组线缆对和第二组线缆对均连接有效受电设备；接收来自PD的LLDPDU，其中包括负载数类型长度值TLV，所述负载数TLV用于通告所述PD中包含的PD负载的数量；所述PSE在确定所述PD从所述第一组线缆对和所述第二组线缆对都受电，且所述PD包含两个PD接口的情况下，若根据所述负载数TLV，确定所述PD中包含两个PD负载，则所述PSE通过所述第一组线缆对以第一功率为所述PD供电，通过所述第二组线缆对以第二功率为所述PD供电，所述第一功率和所述第二功率相互独立。这样，PSE可以根据PD的不同设计类型，正确有效地为PD供电。
摘要（英）：

Embodiments of the present invention provide a power over Ethernet method, a device, and a system. PSE detects and determines that both a first set of cable pairs and a second set of cable pairs of an Ethernet twisted pair are connected to a valid powered device; the PSE receives an LLDPDU from a PD, where the LLDPDU includes a load quantity type-length-value TLV, and the load quantity TLV is used to notify a quantity of PD loads included in the PD; in a case in which the PSE determines that the PD receives power from both the first set of cable pairs and the second set of cable pairs, and the PD includes two PD interfaces, if it is determined, according to the load quantity TLV, that the PD includes two PD loads, the PSE supplies power to the PD at a first power by using the first set of cable pairs, and supplies power to the PD at a second power by using the second set of cable pairs, where the first power and the second power are independent of each other. In this way, PSE can supply power to a PD correctly and effectively according to different design types of the PD.

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