Operation Manual – PoE-PoE Profile
H3C S3100 Series Ethernet Switches Chapter 1 PoE Configuration
1-1
Chapter 1 PoE Configuration
1.1 PoE Overview
1.1.1 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.
I. Advantages of PoE
z Reliability: The centralized power supply provides backup convenience, unified
management, and safety.
z Easy connection: Network terminals only require an Ethernet cable, but no
external power supply.
z Standard: PoE conforms to the 802.3af standard and uses a globally uniform
power interfaces;
z 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.
II. PoE components
PoE consists of three components: power sourcing equipment (PSE), PD, and power
interface (PI).
z 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.
z 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.
z PI: PIs are RJ45 interfaces which connect PSE/PDs to network cables.
1.1.2 PoE Features Supported by S3100
PoE-enabled S3100 series Ethernet switches include:
z S3100-8TP-PWR-EI
z S3100-16TP-PWR-EI
z S3100-26TP-PWR-EI
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