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POE CONFIGURATION
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
■ Reliability: The centralized power supply provides backup convenience, unified
management, and safety.
■ Easy connection: Network terminals only require an Ethernet cable, but no
external power supply.
■ Standard: PoE conforms to the 802.3af standard and uses a globally uniform
power interfaces;
■ Bright 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).
■ PSE: 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.
■ PD: 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.
■ PI: PIs are RJ45 interfaces which connect PSE/PDs to network cables.
PoE Features Supported
by the Switch 4210
PoE-enabled Switch 4210s:
■ Switch 4210 PWR 9-Port
■ Switch 4210 PWR 18-Port
■ Switch 4210 PWR 26-Port
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