Chapter 1 Poe Configuration; Poe Overview; Introduction To Poe - H3C S7500 Series Operation Manual

Operation Manual – PoE
H3C S7500 Series Ethernet Switches

Chapter 1 PoE Configuration

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

PoE Overview

PoE Configuration
Displaying PoE Configuration
PoE Configuration Example
1.1 PoE Overview

1.1.1 Introduction to PoE

Power over Ethernet (PoE) uses 10BaseT, 100Base-TX, and 1000Base-T twisted pairs
to supply power to the remote powered devices (PD) in the network and implement
power supply and data transmission simultaneously.
I. 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 interface;
Bright application prospect: PoE can be applied to IP phones, wireless access
points (APs), chargers for portable devices, card readers, cameras, and data
collection.
II. PoE components
Power sourcing equipment (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, WLAN APs, and network cameras.
Power interface (PI): PIs are RJ45 interfaces, which connect PSE/PDs with
network cables.
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Chapter 1 PoE Configuration