Power over Ethernet (PoE) is a technology that provides power along the 10BASE-T, 100BASE-TX, 1000BASE-T, 2.5GBASE-T, 10GBASE-T, or other Ethernet cables. PoE can effectively provide centralized power for terminals such as IP phones, WLAN Access Points (APs), chargers of portable devices, Point of Sale (POS) machines, cameras, and data collection devices. Terminals are PoE-powered when they access the network; therefore, the indoor cabling of power supply is not required.

A PoE system consists of Power Sourcing Equipment (PSE) and Powered Devices (PDs). A PSE provides power, and a PD receives power from the PSE. As shown in Figure 1-1, the PoE switch functions as a PSE, and terminals such as IP phones, WLAN APs, and cameras are PDs.

Diagram of a PoE system

 Huawei switches, equipped with PoE, PoE+, and PoE++ capabilities (PoE Switch), provide flexible options for powering various network devices like IP cameras, access points, and VoIP phones. But what exactly distinguishes PoE, PoE+, and PoE++? and how to recognize PoW Switch models?

PoE
Involved Network Elements: Powered devices (PDs)

PoE function

· The switch supports power supply capability negotiation using the Link Layer Discovery Protocol (LLDP).
· The switch supports perpetual power supply and fast power-on.
·  If a switch supports PoE, its PoE feature is not affected after it joins a stack.

Licensing Requirements
PoE is a basic feature of a switch and is not under license control.

NOTE: Only switches with "PWR" or "PWH" in the device names are PoE switches. Whether switches support PoE depends on the hardware. Non-PoE switches cannot be changed to PoE switches through software upgrades.

Performance parameters of PoE, PoE+, and PoE++

Applicable Huawei PoE Switches models and versions

Product	Product Model	Software Version
S2700	S2700SI	Not supported
	S2710SI	V100R006(C03&C05)
	S2700EI	V100R005C01, V100R006(C00&C01&C03&C05)
	S2720EI	V200R011C10, V200R012C00, V200R013C00
	S2750EI	V200R003C00, V200R005C00SPC300, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00
S3700	S3700SI	V100R005C01, V100R006(C00&C01&C03&C05)
	S3700EI	V100R005C01, V100R006(C00&C01&C03&C05)
	S3700HI	Not supported
S5700	S5700LI	V200R001C00, V200R002C00, V200R003(C00&C02&C10), V200R005C00SPC300, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00
	S5700S-LI	V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, and V200R012C00
	S5710-C-LI	V200R001C00
	S5710-X-LI	Not supported
	S5720LI and S5720S-LI	V200R010C00, V200R011C00, V200R011C10, V200R012(C00&C20), V200R013C00
	S5700SI	V100R005C01, V100R006C00, V200R001C00, V200R002C00, V200R003C00, V200R005C00
	S5700EI	V100R005C01, V100R006(C00&C01), V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00&C01&C02&C03)
	S5710EI	V200R001C00, V200R002C00, V200R003C00, V200R005(C00&C02)
	S5720EI	V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00
	S5700HI	Not supported
	S5710HI	V200R003C00, V200R005(C00&C02&C03)
	S5720HI	V200R006C00, V200R007(C00&C10), V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00
	S5730HI	V200R012C00, V200R013C00
	S5720SI	V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00
	S5720I-SI	V200R012C00, V200R013C00
	S5720S-SI	Not supported
	S5730SI	V200R011C10, V200R012C00, V200R013C00
	S5730S-EI	V200R011C10, V200R012C00, V200R013C00
S6700	S6700EI	Not supported
	S6720EI	Not supported
	S6720S-EI	Not supported
	S6720SI	V200R011C00, V200R011C10, V200R012C00, V200R013C00
	S6720S-SI	Not supported
	S6720LI and S6720S-LI	Not supported
	S6720HI	Not supported

 XPONSHOP offers Huawei full series switch. And if you require the technical support, please email us at sales@xponshop.com.

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