Tp-Link T1600G-28PS (TL-SG2424P) [175/269] Poe config

165

Chapter 11 PoE

Note:

Only T1600G-28PS and T1600G-52PS support PoE function.

PoE (Power over Ethernet) technology describes a system to transmit electrical power along with

data to remote devices over standard twisted-pair cable in an Ethernet network. It is especially

useful for supplying power to IP telephones, wireless LAN access points, cameras and so on.

 Composition

A PoE system usually consists of PSE and PD.

PSE: Power sourcing equipment (PSE) is a device such as a switch that provides power on the

Ethernet cable to the linked device.

PD: A powered device (PD) is a device accepting power from the PSE and thus consumes energy.

PDs fall into two types, standard PDs and nonstandard PDs. Standard PDs refer to the powered

devices that comply with IEEE 802.3af and IEEE 802.3at. Examples include wireless LAN access

points, IP Phones, IP cameras, network hubs, embedded computers etc.

 Advantage

 Cheap cabling: The remote device such as cameras can be powered by PSE in no need

of prolonging its power cord additionally and Ethernet cable is much cheaper than AC

wire or power cord.

 Easy to connect: PoE uses only one Ethernet cable with no need of external power

supply.

 Reliable: A powered device can be either powered by PSE using Ethernet cable or

powered through the provided power adapter. It is very convenient to provide a backup

power supply for the PDs.

 Flexibility: In compliance with IEEE 802.3af and IEEE 802.3at, global organizations can

deploy PoE everywhere without concern for any local variance in AC power standards,

outlets, plugs, or reliability.

 Wide use: It can be applied to wireless LAN access points, IP Phones, IP cameras,

network hubs, embedded computers etc.

T1600G-28PS/T1600G-52PS is a Power Sourcing Equipment (PSE). All the Auto-Negotiation

RJ45 ports on the switch support Power over Ethernet (PoE) function, which can automatically

detect and supply power for those powered devices (PDs) complying with IEEE 802.3af and IEEE

802.3at. The maximum power T1600G-28PS can supply is 192W and the maximum power each

PoE port can supply is 30W. The maximum power T1600G-52PS can supply is 384W and the

maximum power each PoE port can supply is 30W.

PoE function can be configured in the two sections, PoE Config and PoE Time-Range.

11.1 PoE Config

All the RJ45 ports on the switch can be configured to supply power for the powered devices that

comply with IEEE 802.3af and IEEE 802.3at. As the power every port or the system can provide is

limited, some attributes should be set to make full use of the power and guarantee the adequate

power to the linked PDs. When the power exceeds the maximum power limit or the power is

inadequate to power the device, the switch may disconnect the power supply to the PD linked to