Power over Ethernet Fundamentals

Table 1. Power over Ethernet product support

Feature

Product

Release introduced

For configuration details, see VOSS User Guide.

Power over Ethernet (PoE)

5520 Series

VOSS 8.2.5

5520-12MW-36W, 5520-24W and 5520-48W only

VSP 4450 Series

VSP 4000 4.0

VSP 4900 Series

VOSS 8.1

VSP4900-48P and first 12 ports of VSP4900-12MXU-12XE only

VSP 7200 Series

Not Applicable

VSP 7400 Series

Not Applicable

VSP 8200 Series

Not Applicable

VSP 8400 Series

Not Applicable

VSP 8600 Series

Not Applicable

XA1400 Series

Not Supported

PoE/PoE+ allocation using LLDP

5520 Series

VOSS 8.2.5

5520-12MW-36W, 5520-24W and 5520-48W only

VSP 4450 Series

VOSS 5.1

VSP 4900 Series

VOSS 8.1

VSP4900-48P and first 12 ports of VSP4900-12MXU-12XE only

VSP 7200 Series

Not Applicable

VSP 7400 Series

Not Applicable

VSP 8200 Series

Not Applicable

VSP 8400 Series

Not Applicable

VSP 8600 Series

Not Applicable

XA1400 Series

Not Supported

Fast PoE

5520 Series

VOSS 8.2.5

5520-12MW-36W, 5520-24W and 5520-48W only

VSP 4450 Series

Not Applicable

VSP 4900 Series

VOSS 8.1

VSP4900-48P and first 12 ports of VSP4900-12MXU-12XE only

VSP 7200 Series

Not Applicable

VSP 7400 Series

Not Applicable

VSP 8200 Series

Not Applicable

VSP 8400 Series

Not Applicable

VSP 8600 Series

Not Applicable

XA1400 Series

Not Supported

Perpetual PoE

5520 Series

VOSS 8.2.5

5520-12MW-36W, 5520-24W and 5520-48W only

VSP 4450 Series

Not Applicable

VSP 4900 Series

VOSS 8.1

VSP4900-48P and first 12 ports of VSP4900-12MXU-12XE only.

VSP 7200 Series

Not Applicable

VSP 7400 Series

Not Applicable

VSP 8200 Series

Not Applicable

VSP 8400 Series

Not Applicable

VSP 8600 Series

Not Applicable

XA1400 Series

Not Supported

Power over Ethernet (PoE) is the implementation of IEEE 802.3af, IEEE 802.3at, and IEEE 802.3bt (Type 3 and Type 4), which allows for both data and power to pass over a copper Ethernet LAN cable. Typical power devices include wireless Access Points and VoIP telephones.

Depending on the technology and application requirements, PoE is classified into classes. Depending on the power requirements, the PoE devices are categorized by type. Classes range from Class 0 to 8 whereas types range from Type 1 to 4. Each type associates with an IEEE 802.3 PoE standard. These standards provide signalling between the power sourcing equipment (PSE) and the powered device (PD). PSE devices, such as switches, provide power on the network cable. The devices that PSE provides power to are called PDs, such as VoIP phones, wireless access points, and IP surveillance cameras.

To know which ports support PoE, see the following documents:

The switch uses the Dynamic Power Allocation scheme when supplying power to devices. Only the power being consumed by the device is allocated, improving efficiency and enabling support for more number of devices.

You can configure PoE from CLI and Enterprise Device Manager (EDM).