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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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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).
How Do I Configure Power Modules for the CloudEngine Series Switches?

How Do I Configure Power Modules for the CloudEngine Series Switches?

CloudEngine 12800 and 12800E

Power redundancy modes for the CloudEngine 12800 and 12800E series switches

Power modules in a CloudEngine 12800 or 12800E series switch can work in N+N backup, N+1 backup, or N+0 mode. To ensure power reliability, it is recommended that you use the N+N backup mode and connect the power modules to two power supply systems. In this way, the switch will not be powered off or restart if one power supply system fails.

N is the number of power modules configured based on actual power consumption of a chassis. The maximum power capacity of the system is the total maximum output power of N power modules.

  • N+N backup: N power modules supply power for the chassis, and N power modules work as backup to implement power redundancy.
  • N+1 backup: N power modules supply power for the chassis, and one power module works as backup to implement power redundancy.
  • N+0 (no backup): N power modules supply power for the chassis, and no power module works as backup.

The CloudEngine 12800 and 12800E series switches do not support the PoE function.

Power module configuration modes for the CloudEngine 12800 and 12800E series switches

Configuration of power modules varies depending on the power redundancy mode:

  • In N+N backup mode, power module (PM) slots in the chassis are divided into area A and area B, and power modules in the two areas work as a hot backup for each other, as shown in Slot layout in the CE12804 chassis, Slot layout in the CE12808 chassis, Slot layout in the CE12812 chassis, Slot layout in the CE12816 chassis, Slot layout in the CE12804S chassis, Slot layout in the CE12808S chassis, Slot layout in the CE12804E chassis, Slot layout in the CE12808E chassis, and Slot layout in the CE12816E chassis. To use the N+N backup mode, install N power modules in the PM slots in area A, and the other N power modules in the PM slots in area B. For example, to use the 4+4 backup mode in a CE12812 chassis, install four power modules in any four slots among PM1, PM2, PM5, PM6, PM9, and PM10, and the other four power modules in any four slots among PM3, PM4, PM7, PM8, PM11, and PM12.
  • In N+1 backup or N+0 mode, power module slots are not divided into two areas for backup, and N+1 or N power modules can be installed in any PM slots. However, you are advised to install (N+1)/2 or N/2 power modules in area A and the other power modules in area B. (Here, area division used in the N+N backup mode is mentioned only for convenience of description. Actually, area A and area B do not back up each other.) If N+1 or N is an odd number, the redundant one can be installed in either area A or area B.
    • For example, to use the 6+0 mode in a CE12812 chassis, you are advised to install three power modules in any three slots among PM1, PM2, PM5, PM6, PM9, and PM10, and the other three power modules in any three slots among PM3, PM4, PM7, PM8, PM11, and PM12.
    • To use the 6+1 backup mode in a CE12812 chassis, you are advised to install four power modules in any four slots among PM1, PM2, PM5, PM6, PM9, and PM10, and the other three power modules in any three slots among PM3, PM4, PM7, PM8, PM11, and PM12. Alternatively, install three power modules in any three slots among PM1, PM2, PM5, PM6, PM9, and PM10, and the other four power modules in any four slots among PM3, PM4, PM7, PM8, PM11, and PM12.

CloudEngine 8800, 7800, 6800, and 5800

CloudEngine 8800, 7800, 6800, and 5800 series switches have two power module slots, in which pluggable power modules can be installed to provide power to the chassis. A chassis can use one or two power modules. Double power modules can provide higher reliability.

CloudEngine 8800, 7800, 6800, and 5800 series switches support double power modules working in 1+1 backup mode.
  • When both power modules are working normally, each of them provides half of the power required for the chassis.
  • When one power module fails, the other one provides all power required for the chassis.

CloudEngine 9800 series switches have four power module slots, in which pluggable power modules can be installed to provide power to the chassis. Install at least two power modules. Four power modules can provide higher reliability. CloudEngine 9800 series switches support four power modules working in 2+2 backup mode.

All power modules are hot swappable. CloudEngine 8800, 7800, 6800, and 5800 series switches do not support the PoE function.

Power modules in a chassis must have the same power and same heat dissipation method.

If not all power module slots are configured with power modules, the system displays an alarm indicating that no power module is installed in a vacant power module slot.

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Updated: 2020-01-07

Document ID: EDOC1000060766

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