Power Over Ethernet Method and Apparatus

摘要

A power over Ethernet method where power sourcing equipment (PSE) detects and determines that 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 (PD), the PSE receives a link layer discovery protocol data unit (LLDPDU) from the PD, where the LLDPDU includes a load quantity type-length-value (TLV) used to notify a quantity of PD loads included in the PD, and when 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, and the PD includes two PD loads, the PSE supplies power to the PD at a first power using the first set of cable pairs, and supplies power to the PD at a second power using the second set of cable pairs.

主权项

1. A power over Ethernet method, comprising:
detecting and determining, by power sourcing equipment (PSE), 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 (PD); receiving, by the PSE, a first Link Layer Discovery Protocol data unit (LLDPDU) from the powered device, wherein the first LLDPDU comprises a load quantity type-length-value (TLV), wherein the load quantity TLV is used to notify a quantity of PD loads that are part of the PD, and wherein the PD is connected to the PSE using the Ethernet twisted pair, and supplying, by the PSE, power to the PD at a first power using the first set of cable pairs, when the PSE determines that the PD receives power from both the first set of cable pairs and the second set of cable pairs and when the PSE determines, according to the load quantity TLV, that the PD comprises two PD loads, supplying power to the PD at a second power by using the second set of cable pairs when the PSE determines that the PD receives power from both the first set of cable pairs and the second set of cable pairs and when the PSE determines, according to the load quantity TLV, that the PD comprises two PD loads, wherein the PD comprises two PD interfaces, and wherein the first power and the second power are independent of each other.