Network device and port function setting method thereof

摘要

A network device and a method for the network device to set operation of a port are provided. The network device is connected to a set of power sourcing equipment (PSE) through a port, and the PSE powers the network device through the port. The network device includes an analysis module and a port control module. The analysis module judges whether the port of the network device is connected to the PSE. The port control module provides a port function switch instruction according to a judgment result of the analysis module, so as to enable or disable the port.

主权项

1. A network device, which is a powered device (PD) and receives power from a power sourcing equipment (PSE) of outside, comprising a port used for connecting a set of the power sourcing equipment (PSE), the network device comprising:
an analysis module, used for judging whether the port is connected to the PSE; a powered device control module, coupled to the analysis module and used for generating a piece of power reception information according to whether the port is connected to the PSE, wherein the analysis module judges whether the port is connected to the PSE according to the power reception information; a packet forwarding unit, coupled to the analysis module, to determine whether to forward a received packet according to the judgment result of the analysis module if it is judged that the packet is required to be forwarded, wherein the packet forwarding unit further determines a target equipment to which the packet is forwarded; a port control module, used for providing a port function switch instruction according to a judgment result generated by the analysis module and enable or disable the port according to the port function switch instruction; and a power control module coupled to the analysis module, wherein the power control module generates a power selection instruction according to the power reception information, and the power selection instruction comprises a piece of port designation information used for designating a power signal transmitted by a corresponding port for power supply, wherein the port control module further comprises: a power detecting unit, coupled to the port and the power control module and used for generating the power selection instruction when the power supplied from the power sourcing equipment is interrupted, wherein the power control module designates a candidate port different from the port corresponding to the interrupted power supply by the power selection instruction, and uses a power signal transmitted by the candidate port for power supply.