H3C Technologies H3C S7500E Series Switches - Manual (Page 100)

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PoE Configuration
The S7500E Series Ethernet Switches are distributed devices supporting Intelligent Resilient
Framework (IRF). Two S7500E series can be connected together to form a distributed IRF
device. If an S7500E series is not in any IRF, it operates as a distributed device; if the S7500E
series is in an IRF, it operates as a distributed IRF device. For introduction of IRF, refer to IRF
Configuration in the IRF Configuration Guide.
When configuring PoE, go to these sections for information you are interested in:
z PoE Overview
z PoE Configuration Task List
z Enabling PoE
z Detecting PDs
z Configuring the PoE Power
z Configuring PoE Power Management
z Configuring the PoE Monitoring Function
z Configuring PoE Interface through PoE Profile
z Upgrading PSE Processing Software in Service
z Displaying and Maintaining PoE
z PoE Configuration Example
z Troubleshooting PoE
PoE Overview
Introduction to PoE
Power over Ethernet (PoE) means that power sourcing equipment (PSE) supplies power to
powered devices (PDs) from Ethernet interfaces through twisted pair cables.
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 no external power supply but only an Ethernet
cable.
z Standard: In compliance with IEEE 802.3af, and a globally uniform power interface is
adopted.