Power over Ethernet Fundamentals

Table 1. Power over Ethernet product support

Feature

Product

Release introduced

Power over Ethernet (PoE)

5320 Series

Fabric Engine 8.6

5320-24P-8XE, 5320-48P-8XE, 5320-16P-4XE, and 5320-16P-4XE-DC.

5420 Series

VOSS 8.4

5420F-24P-4XE, 5420F-48P-4XE, 5420F-48P-4XL, 5420F-8W-16P-4XE, 5420F-16W-32P-4XE, 5420F-16MW-32P-4XE, 5420M-24W-4YE, 5420M-48W-4YE, and 5420M-16MW-32P-4YE

5520 Series

VOSS 8.2.5

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

5720 Series

Fabric Engine 8.7

5720-24MW, 5720-48MW, 5720-24MXW, and 5720-48MXW

PoE/PoE+ allocation using LLDP

5320 Series

Fabric Engine 8.6

5320-24P-8XE, 5320-48P-8XE, 5320-16P-4XE, and 5320-16P-4XE-DC.

5420 Series

VOSS 8.4

5420F-24P-4XE, 5420F-48P-4XE 5420F-8W-16P-4XE, , 5420F-16W-32P-4XE, 5420F-16MW-32P-4XE , 5420F-48P-4XL, 5420M-24W-4YE, 5420M-48W-4YE, and 5420M-16MW-32P-4YE

5520 Series

VOSS 8.2.5

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

5720 Series

Fabric Engine 8.7

5720-24MW, 5720-48MW, 5720-24MXW, and 5720-48MXW

Fast PoE

5320 Series

Fabric Engine 8.6

5320-24P-8XE, 5320-48P-8XE, 5320-16P-4XE, and 5320-16P-4XE-DC.

5420 Series

VOSS 8.4

5420F-24P-4XE, 5420F-48P-4XE 5420F-8W-16P-4XE, , 5420F-16W-32P-4XE, 5420F-16MW-32P-4XE , 5420F-48P-4XL, 5420M-24W-4YE, 5420M-48W-4YE, and 5420M-16MW-32P-4YE

5520 Series

VOSS 8.2.5

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

5720 Series

Fabric Engine 8.7

5720-24MW, 5720-48MW, 5720-24MXW, and 5720-48MXW

Perpetual PoE

5320 Series

Fabric Engine 8.6

5320-24P-8XE, 5320-48P-8XE, 5320-16P-4XE, and 5320-16P-4XE-DC.

5420 Series

VOSS 8.4

5420F-24P-4XE, 5420F-48P-4XE 5420F-8W-16P-4XE, , 5420F-16W-32P-4XE, 5420F-16MW-32P-4XE , 5420F-48P-4XL, 5420M-24W-4YE, 5420M-48W-4YE, and 5420M-16MW-32P-4YE

5520 Series

VOSS 8.2.5

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

5720 Series

Fabric Engine 8.7

5720-24MW, 5720-48MW, 5720-24MXW, and 5720-48MXW

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 signaling 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).