H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – PoE
H3C S7500E Series Ethernet Switches Chapter 1 PoE Configuration
1-2
z PSE
PSE is a card or subcard. PSE manages its own PoE interfaces independently. PSE
examines the Ethernet cables connected to PoE interfaces, searches for the devices,
classifies them, and supplies power to them. When detecting that a PD is unplugged,
the PSE stops supplying power to the PD.
An Ethernet interface with the PoE capability is called PoE interface. Currently, a PoE
interface can be an FE or GE interface.
z PD
A PD is a device accepting power from the PSE. There are standard PDs and
nonstandard PDs. A standard PD refers to the one that complies with IEEE 802.3af.
The PD that is being powered by the PSE can be connected to other power supply units
for redundancy backup.
1.1.2 Protocol Specification
The protocol specification related to PoE is IEEE 802.3af.
1.2 PoE Configuration Task List
Complete these tasks to configure PoE:
Task Remarks
Configuring the PoE Power Required
Configuring the PSE Required
Configuring the PoE Interface Required
Configuring PoE Power Management Optional
Configuring the PoE Monitoring Function Optional
Upgrading PSE Processing Software Online Optional
Enabling the PSE to Detect Nonstandard PDs Optional
Caution:
z When the PoE power or PSE fails, you cannot configure PoE.
z Turning off of the PoE power during the startup of the device might result in the
failure to restore the PoE configuration.