PoE Standards for Access Points
It's important to validate the PoE standard of the AP and the PoE devices such as PoE Access switches. Using a swtich with different standard than the AP may lead to unexpected behavior an even to have some important features aunavailable. Please refer to following information to be familiar with the PoE standars and understand the differences and their relations.
PoE Power Supply Standards
PoE power supply standards include IEEE 802.3bt, IEEE 802.3at, and IEEE 802.3af. PoE technical specifications vary depending on the PoE power supply standard.
802.3bt AP: is also called UPoE AP, and supports IEEE 802.3bt and IEEE 802.3at. Functions supported by APs vary depending on the PoE power supply standard.
802.3at AP: supports IEEE 802.3at and IEEE 802.3af. Functions supported by APs vary depending on the PoE power supply standard. Important fucntions as Radio function are not available when working with 802.3af
802.3af AP: supports only IEEE 802.3af.
PoE Technical Specifications
PoE technical specifications vary depending on PoE technologies. You can select the required PoE technology to power on PDs according to PD requirements.
Power supply technology | PoE | PoE+ | PoE++ |
|---|---|---|---|
Power supply distance | 100 m | 100 m | 100 m |
Power class | 0-3 | 0-4 | 0-8 |
Maximum current | 350 mA | 600 mA | 1730 mA |
PSE output voltage | 44 V DC-57 V DC | 50 V DC-57 V DC | 50 V DC-57 V DC |
PSE output power | ≤ 15400 mW | ≤ 30000 mW | ≤ 90000 mW |
PD input voltage | 36 V DC-57 V DC | 42.5 V DC-57 V DC | 42.5 V DC-57 V DC |
Maximum PD power | 12950 mW | 25500 mW | 81600 mW |
Cable requirements | Unstructured | CAT-5e or better | CAT-5e or better |
Power supply cable pairs | 2 | 2 | 4 |
PoE technology complies with IEEE 802.3af.
PoE+ technology complies with IEEE 802.3at.
PoE++ technology complies with IEEE 802.3bt.
Function Comparison for APs in Different Power Supply Standards
802.3bt AP
AP Model | 802.3bt Power Supply | 802.3at Power Supply |
|---|---|---|
| AP7050DN-E | The functions are not restricted when the AP is powered by 90 W 802.3bt.
| The USB function and PoE out are not supported.
|
| AP7052DN and AP7152DN | The functions are not restricted. | The USB function is not supported. The radio power is managed in self-adaptive mode. The IoT card power is restricted within 0.5 W. When the AP is powered by 802.3at through an Ethernet port, only this Ethernet port is enabled while other ports are shut down. When two Ethernet ports are used to power the AP, the two ports are both enabled. |
| AP6052DN | The functions are not restricted. | The USB function and GE port are not supported. The radio power is managed in self-adaptive mode. |
| AP7052DE | The functions are not restricted. | The USB function is not supported. The radio power is managed in self-adaptive mode. When the AP is powered by 802.3at through an Ethernet port, only this Ethernet port is enabled while other ports are shut down. When two Ethernet ports are used to power the AP, the two ports are both enabled. |
| AP8082DN and AP8182DN |
| PoE out is not supported. The 5GE and optical ports can work only in Up state. The GE/POE_OUT port is shut down. The radio power is reduced. The 2.4G radio works in 2T4R mode. The 2T4R mode indicates that a radio transmits signals through two spatial streams and receives signals through four spatial streams. |
802.3at AP
AP Model | 802.3at Power Supply | 802.3af Power Supply |
|---|---|---|
| AP4050DN-HD |
| PoE out is not supported, and the maximum transmit power is adjusted to 13 dBm (2.4 GHz radio) and 17 dBm (5 GHz radio). |
| R250D-E and AP2050DN-E | The USB function and 10 W PoE out are supported. | The USB function is disabled, and PoE out is not supported. |
| AP2050DN, AP4051DN, and AP4151DN | The functions are not restricted. | The USB function is disabled. |
| AP8050DN, AP8150DN, AP6510DN, AP7110DN, AP8030DN, AP8130DN, AP7030DE and AP9330DN, AP9131DN, and AP9132DN | The functions are not restricted. | All radios are disabled. |
| AP4030TN | The functions are not restricted. | The USB function and all radios are disabled. |
| AP4051TN | The functions are not restricted. | The USB function is not supported. All the three radios transmit signals through one spatial stream and receives signals through N spatial streams. N specifies the maximum number of spatial streams for receiving signals. |
| AP4050DN-E |
| The USB function and all radios are disabled, and PoE out is not supported. |
| AP6050DN, AP6150DN, and AP7050DE |
| The USB function and all radios are disabled. |
| AP8050TN-HD | The functions are not restricted. | All the three radios transmit signals through one spatial stream and receives signals through two spatial streams. |
802.3af AP
802.3af APs support IEEE 802.3af, and their functions are not restricted.
All other APs support IEEE 802.3af except the 802.3bt and 802.3at APs listed in the preceding table.
