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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring PoE Functions

Configuring PoE Functions

Pre-configuration Tasks

Before configuring PoE, complete the following tasks:

  • Connect the interfaces on the PSE to PD to ensure that the status of the link layer protocol of the interface is Up.
NOTE:
Generally, the device can detect whether a PD connected to it needs power supply and provides PoE function. If you need to modify the PoE configuration or manually power on the PD, see the following configuration.

Enabling the PoE Function

Context

Ensure that the PoE function on the interface is enabled before powering on a PD connected to the interface.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    interface interface-type interface-number

    The interface view is displayed.

  3. Run:

    poe enable

    The PoE function is enabled on the interface.

    By default, the PoE function is enabled on the interfaces.

(Optional) Configuring the LLDP Power Capacity Negotiation

Context

You can configure the TLV in LLDP so that the device can classify PDs through the LLDP function enabled on the device . The device that is not configured with the LLDP function detects and classifies PDs through analyzing current and resistance between the device and PDs. Compared with current and resistance analysis, the LLDP function provides a more comprehensive and accurate analysis.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    lldp enable

    LLDP is enabled globally.

    By default, LLDP is disabled globally.

  3. Run:

    interface interface-type interface-number

    The interface view is displayed.

  4. Run:

    lldp enable

    LLDP is enabled on an interface.

    If LLDP is enabled globally, by default, LLDP is enabled on each interface.

  5. Run:

    lldp tlv-enable dot3-tlv power

    LLDP is configured to advertise Power Via MDI TLV.

    By default, LLDP is configured to advertise Power Via MDI TLV.

    NOTE:
    After LLDP is configured advertise Power Via MDI TLV, the device can analyze the interface type, whether the PSE supports MDI, status of MDI power supply, whether the PSE can control the line pairs and analyze the line pairs and power priority.

  6. Run:

    lldp tlv-enable med-tlv power-over-ethernet

    LLDP is configured to advertise extended Power Via MDI TLV.

    By default, LLDP is configured to advertise extended Power Via MDI TLV.

    NOTE:
    After LLDP is configured advertise extended Power Via MDI TLV, the device can analyze the power type, power supply, and interface power priority.

Configuring PoE Power Management

Context

You can configure the maximum power, percentage of the reserved PoE power to the total PoE power, and PoE power alarm threshold. Setting power parameters based on requirement of PDs connected to the device helps you effectively use PoE power and ensures device stability.

Procedure

  • Configure the maximum output power of the device.

    If the power that the network provides for the PoE device is unstable, for example, the mains voltage fluctuates, the power that the PoE device provides for PDs is affected and begins to fluctuate. As a result, PDs are not provided with sufficient power and some PDs are powered off. You can configure the maximum output power of the device to ensure power stability for a PD.

    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      poe max-power max-power [ slot slot-id ] 

      The maximum output power of the device is configured.

      By default, the maximum output power of the device is the total power that the PoE power supply provides for PDs. Therefore, the configured maximum output power must be equal to or smaller than the total power that the PoE power supply provides for PDs.

  • Configure the reserved PoE power percentage.

    The power of a PD keeps changing when the PD is running. Sometimes, the power consumption increases sharply and the available power of the device cannot support the burst increase of power. The device may not detect this problem and does not cut off PDs on low-priority interfaces. As a result, all PDs are powered off because of overload. You can configure proper reserved power to solve the problem. When the power consumption increases sharply, the reserved power can support the system running. Then the device can immediately power off PDs on low-priority interfaces to ensure stable running of other PDs.

    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      poe power-reserved power-reserved [ slot slot-id ]

      The percentage of the reserved PoE power to the maximum output power is configured.

      By default, 20% of the total power is reserved.

  • Configure the alarm threshold of power consumption percentage.

    When the power consumption increases sharply within a range, the reserved power can satisfy the power requirement. However, if the power consumption exceeds the range, some PDs are powered off. To solve this problem, configure the alarm threshold for the power consumption percentage. When the power consumption exceeds the threshold, the system generates an alarm so that administrators can take measures to reduce the power consumption.

    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      poe power-threshold threshold-value [ slot slot-id ]

      The alarm threshold for the power consumption percentage is configured.

      The default alarm threshold of the PoE power consumption percentage is 100% for the AD9431DN-24X and 90% for other APs.

Configuring PoE Power-on and Power-off Management

Context

The device supports two power-on and power-off modes: automatic and manual.
  • In automatic mode, the interface power supply priority can be configured as critical, high, or low. When the remaining power is insufficient, PDs with higher power supply priority are first provided with power.
  • In manual mode, you can power on or power off the specified interface as required. When the remaining power is insufficient, PDs cannot be powered on.
Besides powering on PDs in the automatic and manual modes, the interface PoE power management provides the following functions:
  • Configuring the power-on and power-off time range.
  • Being compatible with non-standard PDs.
  • Forcibly power on the abnormal PD.

Procedure

  • Configure the PoE power management mode.
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      poe power-management { auto | manual } [ slot slot-id ]

      The PoE power management mode is set.

      By default, the device uses the automatic power management mode.

      • In automatic mode, configure the power supply priority of the interface. The device powers on or powers off PDs connected to an interface based on the power supply priority of the interface.
        1. Run:
          interface interface-type interface-number

          The interface view is displayed.

        2. Run:

          poe priority { critical | high | low }

          The power supply priority of the interface is set.

          The priorities in descending order are critical, high, and low.

          By default, the power supply priority of an interface is low.

      • In manual power management mode, PDs connected to each interface are manually powered on or powered off. In manual mode, you can select some PDs to power on or power off as required.

        1. Run:
          system-view

          The system view is displayed.

        2. Run:
          poe { power-on | power-off } interface interface-type interface-number

          The PD connected to an interface is powered on or powered off manually.

  • (Optional) Set the power-off time range of a PoE interface.

    PDs connected to an interface do not keep working. You can set the power-off time range of a PoE interface so that it can automatically power off when it is idle to save energy.

    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      time-range time-name { start-time to end-time days | from time1 date1 [ to time2 date2 ] }

      A power-off time range of PoE is defined.

    3. Run:

      interface interface-type interface-number

      The interface view is displayed.

    4. Run:

      poe power-off time-range time-range-name

      A configured PoE power-off time range is applied to an interface.

  • (Optional) Configure the device to be compatible with non-standard PDs

    When a non-standard PD is connected to the device, the device cannot detect the proper resistance and cannot identify the PD. When compatibility check is enabled, the device can detect and provide power for the PD that does not comply with the 802.3af or 802.3at standard.

    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface interface-type interface-number

      The interface view is displayed.

    3. Run:

      poe legacy enable

      The interface is enabled to check compatibility of non-standard PDs

      By default, compatibility detection for PDs is disabled on an interface.

  • (Optional) Configure the PoE standard type.

    The device that supports IEEE802.3at provides a maximum power of 30 W, and the device that supports IEEE802.3af provides a maximum power of 15.4 W. The former device provides higher current than the latter device when they power on PDs. Some non-standard PDs cannot be powered on in high current. To power on these PDs, configure the device to provide power with low current in conformance to IEEE802.3af.

    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      poe af-inrush enable [ slot slot-id ]

      The device is configured to provide power with low current for PDs in conformance to IEEE802.3af.

      By default, a device provides power in conformance to IEEE802.3at.

      NOTE:
      After running the poe af-inrush enable [ slot slot-id ] command, remove the non-standard PDs and then install them so that the PDs can be powered on.

  • (Optional) Power on PDs on an interface forcibly.

    After this function is configured, an interface forcibly power on the connected PD even if the PSE cannot identify the PD. Before powering on the interface, ensure that the system power is sufficient.

    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface interface-type interface-number

      The interface view is displayed.

    3. Run:

      poe force-power

      The interface is configured to forcibly power on the connected PD.

      By default, this function is disabled. That is, the PDs are powered on in automatic mode.

Checking the Configuration

Procedure

  • Run the display poe-power command to view the status of the PoE power supply.
  • Run the display lldp tlv-config command to view the TLV types supported by the interface.
  • Run the display lldp local command to view the status of the LLDP on the interfaces and device.
  • Run the display lldp neighbor command to view the information of the interface neighbors.
  • Run the display lldp neighbor brief command to view the information of the device neighbors.
  • Run the display poe device command to display the information about the devices that support the PoE function.
  • Run the display poe information [ slot slot-id ] command to view the information about the PoE function.
  • Run the display poe power [ slot slot-id | interface interface-type interface-number ] command to view the current power of the interface.
  • Run the display poe power-state [ slot slot-id | interface interface-type interface-number ] command to view the PoE power supply status on the interface.
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Updated: 2019-01-11

Document ID: EDOC1000176006

Views: 118684

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