H3C Technologies H3C S5120 Series Switches - Manual (Page 715)

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3) PI: An Ethernet interface with the PoE capability is called PoE interface. Currently, a PoE interface
can be an FE or GE interface.
4) PD: A PD is a device accepting power from the PSE, including IP phones, wireless APs, chargers
of portable devices, POS, and web cameras.
The PD that is being powered by the PSE can be connected to another power supply unit for
redundancy power backup.
Figure 1-1 PoE system diagram
Protocol Specification
The protocol specification related to PoE is IEEE 802.3af.
PoE Configuration Task List
You can configure a PoE interface in either of the following two ways:
z Through command lines.
z Through configuring the PoE profile and applying the PoE profile to the PoE interface.
When configuring a single PoE interface, you can use command lines; when you configure PoE
interfaces in batches, you can use the PoE profile. For a PoE configuration parameter of a PoE
interface, you can only select one mode (including modification and removal of a PoE interface).
Complete these tasks to configure PoE:
Task Remarks
Enabling PoE Enabling PoE for a PoE Interface Required
Enabling the PSE to Detect Nonstandard PDs Optional
Detecting PDs
Configuring a PD Disconnection Detection
Mode
Optional
Configuring the PoE
Power Configuring the Maximum PoE Interface
Power
Optional
Configuring PoE Power
Management Configuring PoE Interface Power
Management
Optional
onfiguring PSE Power Monitoring Optional
Configuring the PoE
Monitoring Function
Monitoring PD
Optional
The device
automatically
monitors PDs when
supplying power to