H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – PoE
H3C S7500E Series Ethernet Switches Chapter 1 PoE Configuration
1-1
Chapter 1 PoE Configuration
When configuring PoE, go to these sections for information you are interested in:
z PoE Overview
z PoE Configuration Task List
z Configuring the PoE Power
z Configuring the PSE
z Configuring the PoE Interface
z Configuring PoE Power Management
z Configuring the PoE Monitoring Function
z Upgrading PSE Processing Software Online
z Enabling the PSE to Detect Nonstandard PDs
z Displaying and Maintaining PoE
z PoE Configuration Example
z Troubleshooting PoE
1.1 PoE Overview
1.1.1 Introduction to PoE
Power over Ethernet (PoE) means that power sourcing equipment (PSE) supplies
power to powered devices (PD) such as IP telephone, wireless LAN access point, and
web camera from Ethernet interfaces through twisted pair cables.
I. Advantages
z Reliable: Power is supplied in a centralized way so that it is very convenient to
provide a backup power supply.
z Easy to connect: A network terminal requires only one Ethernet cable, but no
external power supply.
z Standard: In compliance with IEEE 802.3af, and a globally uniform power interface
is adopted.
z Promising: It can be applied to IP telephones, wireless LAN access points,
portable chargers, card readers, web cameras, and data collectors.
II. Composition
A PoE system consists of PoE power, PSE, and PD.
z PoE power
The whole PoE system is powered by the PoE power, which includes external PoE
power and internal PoE power.