Fault detection and power recovery and redundancy in a power over ethernet system

A device comprising:

• a data port;
• and
• power supplying logic configured to:
• apply voltage to the data port to transmit at least an amount of power requested by a powered device to the powered device over a plurality of pairs of wires of a data cable operably coupled to the data port, wherein to apply the voltage to the data port, the power supplying logic is further configured to:
• apply a first voltage to a first portion of pins of the data port operably coupled to a first two pairs of wires of the data cable to transmit a first amount of power to the powered device over the first two pairs of wires of the data cable;
• and
• apply a second voltage to a second portion of pins of the data port operably coupled to a second two pairs of wires of the data cable to transmit a second amount of power to the powered device over the second two pairs of wires of the data cable;
• identify an occurrence of a fault in the first two pairs of wires out of the plurality of pairs of wires making up the data cable when the power supplying logic identifies an open circuit at the first two pairs of wires of the data cable for at least a specified amount of time;
• and
• in response to identifying the occurrence of the fault, perform power recovery to supply the amount of power requested by the powered device to the powered device over a remaining one or more pairs of wires.

A power sourcing equipment comprising:

• power supply logic configured to apply voltage to a data port to transmit at least an amount of power requested by a powered device to the powered device over a plurality of pairs of wires of a data cable operably coupled to the data port, wherein applying the voltage to the data port further comprises:
• applying a first voltage to a first portion of pins of the data port operably coupled to a first two pairs of wires of the data cable to transmit a first amount of power to the powered device over the first two pairs of wires of the data cable;
• and
• applying a second voltage to a second portion of pins of the data port operably coupled to a second two pairs of wires of the data cable to transmit a second amount of power to the powered device over the second two pairs of wires of the data cable;
• and
• fault detection logic configured to identify an occurrence of a fault in the first two pairs of wires out of the plurality of pairs of wires making up the data cable when the fault detection logic identifies an open circuit at the first two pairs of wires of the data cable for at least a specified amount of time;
• wherein the power supply logic is further configured to, in response to identifying the occurrence of the fault, perform power recovery to supply the amount of power requested by the powered device to the powered device over a remaining one or more pairs of wires.