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Configuration Guide - Device Management
CloudEngine 12800 and 12800E V200R003C00

This document describes the configurations of Device Management, including device status query, hardware management, Information Center Configuration, NTP, Synchronous Ethernet Configuration, Fault Management Configuration, Energy-Saving Management Configuration, Performance Management Configuration, Maintenance Assistant Configuration, and OPS Configuration.

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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).
Overview of Energy-Saving Management

Overview of Energy-Saving Management


As networks become larger, the increased device power consumption increases enterprise operating expense. As such, energy saving becomes the major concern in network construction. To reduce power consumption, devices can use multiple energy-saving technologies.

Energy-Saving Management Features Supported by the Device

The device supports energy-saving features such as Intelligent fan speed adjustment, Energy Efficient Ethernet (EEE), and automatic laser shutdown (ALS).

  • Intelligent Fan Speed Adjustment

    The device adopts the intelligent fan speed adjustment technology to monitor the temperature of key components. If a sensitive component overheats, the fan speed increases; when the temperature returns to its normal range, the fan speed decreases. In this way, the fan module enables the device to run at its normal temperature and reduces power consumption and noise.

  • ALS

    The automatic laser shutdown (ALS) mechanism controls the pulse of the laser of an optical module by detecting the Loss of Signal (LOS) on an optical interface. As well as protecting operators against laser injury, the ALS mechanism saves energy.

    When ALS is disabled, if the optical fiber link fails, data communication is interrupted. However, the optical interface and the laser of an optical module are enabled. If the laser of an optical module still sends pulses after data communication is interrupted, energy is wasted and there is a risk of damaging the eyes of operators.

    When ALS is enabled, if the optical fiber link fails, the system automatically disables the laser of an optical module from sending pulses on the optical interface after detecting the LOS on the optical interface. When the faulty optical fiber link recovers, the system detects that the LOS of the optical interface is cleared and enables the laser to send pulses.

  • EEE

    Energy Efficient Ethernet (EEE) dynamically adjusts the electrical interface power according to network traffic volume.

    When the EEE function is not configured on the electrical interface, the system provides power for each interface. Even though an interface is idle, it consumes the same power as working interfaces. After the EEE function is configured, the system reduces the power on an interface when the interface is idle and restores the power only when the interface starts to transmit data. This reduces power consumption in the system.

  • Port Dormancy

    In port dormancy mode, the physical layer (PHY) chip on the electrical interface enters the low energy consumption mode to reduce power consumption. When interfaces are not connected, major data transmission channels of the chip enter the dormancy state to save energy. When interfaces are connected and traffic on the cable is detected, the PHY chip is restored to normal working state.

  • Shutting Down Idle Circuits and Components

    The device shuts down circuits and components based on their usage to save energy. For example, when the optical module is unavailable on the interface, the system closes circuits that are not used. When the optical module is installed, circuits automatically open.

  • Powering off Redundant Power Modules

    The device powers off redundant power modules based on rated power consumption or real-time power consumption. This does not affect system power supply and saves energy. When the rated power or real-time power increases, the device automatically powers on redundant power modules. This ensures stable power supply.

  • Energy-saving Mode

    The device supports the following energy-saving modes:
    • User-defined mode: allows the energy-saving mode to be configured as service requires.

    • Standard mode: is supported by the device by default and supports intelligent fan speed adjustment.

    • Basic mode: uses technologies supported by the standard mode and allows the device to power off redundant power modules based on rated power consumption.

    • Deep mode: uses technologies supported by the basic mode and allows the device to power off redundant SFUs based on link bandwidth usage between LPUs and SFUs.


    The user-defined mode is not supported by the device and the other three modes can be used.

Updated: 2019-05-05

Document ID: EDOC1100004193

Views: 77821

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