1 PoE Configuration

When configuring PoE, go to these sections for information you are interested in:

zPoE Overview

zPoE Configuration

zPoE Configuration Example

The terms switching engine and Ethernet switch used throughout this documentation refer to a switching device in a generic sense or the switching engine of a unified switch in the WX3000 series.

PoE Overview

Introduction to PoE

Power over Ethernet (PoE)-enabled devices use twisted pairs through electrical ports to supply power to the remote powered devices (PD) in the network and implement power supply and data transmission simultaneously.

Advantages of PoE

zReliability: The centralized power supply provides backup convenience, unified management, and safety.

zEasy connection: Network terminals only require an Ethernet cable, but no external power supply.

zStandard: PoE conforms to the 802.3af standard and uses a globally uniform power interfaces;

zBright application prospect: PoE can be applied to IP phones, wireless access points (APs), chargers for portable devices, card readers, network cameras, and data collection system.

PoE components

PoE consists of three components: power sourcing equipment (PSE), PD, and power interface (PI).

zPSE: PSE is comprised of the power and the PSE functional module. It can implement PD detection, PD power information collection, PoE, power supply monitoring, and power-off for devices.

zPD: PDs receive power from the PSE. PDs include standard PDs and nonstandard PDs. Standard PDs conform to the 802.3af standard, including IP phones, Wireless APs, network cameras and so on.

zPI: PIs are RJ45 interfaces which connect PSE/PDs to network cables.

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3Com WX3000 operation manual PoE Configuration, PoE Overview, Introduction to PoE, Advantages of PoE, PoE components