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S2700, S3700, S5700, S6700, S7700, and S9700 Series Switches Typical Configuration Examples

This document provides examples for configuring features in typical usage scenarios.
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Power Supply Guide for Interoperation Between Huawei PoE Switches and IP Cameras

Power Supply Guide for Interoperation Between Huawei PoE Switches and IP Cameras

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

Principles

A device that needs to be powered by a PoE switch is generally referred to as a powered device (PD). Therefore, an IP camera 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 3-24 describes common causes for failures to provide power to nonstandard PDs.
Table 3-24  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 IP Cameras

IP cameras described in Table 3-25 have been tested and will be updated based on the test results.
Table 3-25  Power supply for different types of IP Cameras connected to PoE switches (this table applies to switches running V200R009 or later)

IP Camera Model

Whether PDs Are Standard PDs

Whether PDs Can Be Powered

Power Supply Failure Cause and Solution

Dahua DH-IPC-HFW4300D-V2-1200B, Dahua DH-IPC-HF8239E, Dahua DH-SD-50D230T-HN, Dahua DH-SD59430U-HNI, Dahua DH-IPC-HDP5121E, Dahua DH-IPC-HDBW3120R-AS, Dahua DH-IPC-HFW4233M, Dahua DH-IPC-EW5431-S, Dahua DH-IPC-EBW81230, Dahua DH-SD-42D212S-HN, Dahua DH-SDZ2030U-N, Dahua DH-IPC-HF8239E, Dahua DH-SD-50D230T-HN, Dahua DH-SD59430U-HNI, Dahua DH-IPC-HDP5121E, Dahua DH-IPC-HDBW3120R-AS, Dahua DH-IPC-HFW4233M, Dahua DH-IPC-EW5431-S, Dahua DH-IPC-EBW81230, Dahua DH-SD-42D212S-HN, Dahua DH-SDZ2030U-N, Huawei IPC6525-Z30, HuaweiIPC6625-Z30-P, Huawei IPC6225-URZ-SP, Huawei IPC6224-VRZ, Huawei IPC6324-MIR, Huawei IPC6125-WDL-P

Standard PDs

Yes

None

Dahua DH-SD6AE530U-HNI, Dahua DH-SD6AE530U-HNI

Nonstandard PDs

No

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

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

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Updated: 2019-04-20

Document ID: EDOC1000069520

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