Power Supply Guide for Interoperation Between Huawei PoE Switches and APs

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This section describes whether a PoE switch can supply power to APs connected to the switch. For details about how to configure APs, see the manual of the specific AP model.

Principles

A device that needs to be powered by a PoE switch is generally referred to as a powered device (PD). Therefore, an AP is also a PD. Huawei PoE switches conform to IEEE 802.3af and IEEE 802.3at, use uniform power sources, and can provide power to all standard PDs by default. To enable Huawei PoE switches to provide power to some nonstandard PDs, you need to perform some configurations on the switches, Table 2-22 describes common causes for failures to provide power to nonstandard PDs.
Table 2-22  Common causes for failures to provide power to nonstandard PDs

Cause

Configuration to Be Performed on a PoE Switch

The PD detection signature capacitance is larger than 0.15 uF.

Run the poe legacy enable command on the interfaces that connect the switch to PDs to enable PD compatibility check.

The current of PDs cannot exceed 10 mA for more than 75 ms within every 325 ms after the PDs are powered on.

Run the poe power-on delay delay-time command on the interfaces that connect the switch to PDs to set the power-on delay. By default, the power-on delay of interfaces is 0. That is, power-on is not delayed.

The current for a specific PD class is larger than 51 mA.

Run the poe force-power command on the interfaces that connect the switch to PDs to forcibly provide power to the PDs.

Summary of Power Supply for Different Types of APs

APs described in Table 2-23 have been tested and will be updated based on the test results.
Table 2-23  Power supply for different types of APs connected to PoE switches (this table applies to switches running V200R009 or later)

AP Model

Whether PDs Are Standard PDs

Whether PDs Can Be Powered

Power Supply Failure Cause and Solution

Cisco AIR-CAP1602I-A-K9, Cisco AIR-CAP3702I-H-K9, Cisco AIR-CAP2602I-A-K9, CiscoAIR-CAP1131AG-C-K9, Cisco AIR-CAP3602I-A-K9, Cisco AIR-CAP1702I-C-K9, Cisco AIR-AP1852I-H-K9, Cisco AIR-AP3802E-H-K9, Cisco AIR-AP1852I-H-K9, Cisco AIR-AP3802E-H-K9, Aruba AP205, Meraki MR34, Ruijie RG-AP130, Huawei R230D, Huawei R240D, HuaweiAP2030DN, Huawei WA603, Huawei AP6050DN, Huawei AP7050DN-E, HuaweiAP7050DE, Huawei AP4030DN, Huawei BTS3911B, Huawei AP5030DN, HuaweiAP9430DN-12, Huawei AP5130DN, Huawei AP7050DN-E, Huawei AP7110DN, Huawei AP8130DN, TP-link TL-AP300C-POE, TP-Link TL-AP452C-POE, TP-Link TL-AP1750C-POE, TP-link TL-AP300C-POE, TP-Link TL-AP452C-POE, TP-Link TL-AP1750C-POE, Ruckus ZoneFlex R710, Ruckus ZoneFlex R610, Ruckus ZoneFlex R510, Ruckus ZoneFlex R710, Ruckus ZoneFlexR610, Ruckus ZoneFlex R510

Standard PDs

Yes

None

Aruba AP 325, MikroTik

Nonstandard PDs

No

Cause: The cable pairs 4/5 and 7/8 of the AP has backfeed voltage, causing the cable pairs 4/5 and 7/8 of the three adjacent ports of the port connected to the AP carry power.

Solution: Use an isolation header to power on these PDs. For details about isolation headers, contact product maintenance personnel.

Netgear WG102-500

Nonstandard PDs

No

Use PoE switches developed in versions later than V200R008.

Aastra 6725, Ruijie RG-AP520

Nonstandard PDs

No

Cause: The current of PDs cannot exceed 10 mA for more than 75 ms within every 325 ms after the PDs are powered on.

Solution: Run the poe power-on delaydelay-time command on the interfaces that connect the switch to PDs to set the power-on delay. By default, the power-on delay of interfaces is 0. That is, power-on is not delayed.

See more please click 

https://support.huawei.com/enterprise/en/doc/EDOC1000069520/9aadccc0/comprehensive-configuration-examples


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