Power Redundancy Function

1. Function Overview

The SWX3220-30MC/TCs can accommodate two power supply units.
The switch can continue operating even if one power supply unit fails or a power cable is accidentally disconnected.
It also supports the hot-swap function, allowing you to replace or add power supply units while the switch is running.
For instructions on how to insert and remove the power supply unit, refer to the user guide.

image

As shown in the diagram above, the slot numbers are 1 on the right and 2 on the left, facing the rear.
The LED lighting pattern of the power supply unit is as follows:

Item Description

Green light

The power supply unit is operating normally

Unlit

No power is being supplied to any power supply unit

Green flash

The power supply unit is not recognized correctly

Orange light

An error has occurred in the power supply unit, and power supply has stopped
The power cable is not inserted

Orange flash

A power supply unit warning has occurred

2. Definition of Terms Used

  • Power Supply Unit Warning

    • A minor problem has occurred with the power supply unit. Power supply continues.

  • Power supply unit abnormality

    • A serious problem has occurred with the power supply unit. Stop the power supply.

3. Function Details

3.1. Power Supply Unit Status Check

You can check the status of the power supply unit by executing the show power-supply command.
The following items can be checked:

Item Description

Slot

Power supply unit slot IDs (stack ID + slot ID)

Model

Power supply unit model name

Serial

Power supply unit serial number

Status

Power supply unit status

Voltage

Input voltage

Wattage

Input power consumption

Max

Maximum power consumption

FanSpeed

Power supply unit fan speed

The items displayed in Status are as follows:
If multiple Failed or Warning items occur simultaneously, the causes are listed.

Item Description

None

Power supply unit not plugged in

Powered

Power is being supplied normally

No AC-cable

Power cable not plugged in

Wrong module

An unsupported power supply unit is plugged in

Warned(In)

A warning has occurred on the input side regarding current, voltage, or power consumption

Warned(Out)

A warning has occurred on the output side regarding current, voltage, or power consumption

Warned(Temp)

A warning has occurred regarding the power supply unit temperature.

Warned(FAN)

A warning is occurring for the power supply unit fan

Failed(In)

An abnormality has occurred on the input side regarding current, voltage, or power consumption

Failed(Out)

An abnormality has occurred on the output side regarding current, voltage, or power consumption

Failed(Temp)

An abnormality has occurred in the power supply unit temperature

Failed(FAN)

An abnormality has occurred in the power supply unit fan

If a power supply unit warning occurs, review the installation environment.
If a problem occurs with the power supply unit, review the installation environment or replace the power supply unit.
Refer to the user guide for details.

3.2. Changes in power supply unit status

If there is a change in the status of the power supply unit, you can check it on the dashboard as shown below.
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The types of power supply unit status changes are as follows:

Item Description

Power supply unit insertion

The power supply unit is inserted

Power supply unit removal

The power supply unit was removed

Power cable insertion

The power cable is inserted

Power cable removal

The power cable was removed

Input power warning

A warning has occurred regarding the input current or voltage

Output power warning

A warning has occurred regarding the output current or voltage

Temperature warning

The power supply temperature has exceeded the warning threshold

Fan warning

A warning has occurred regarding the power supply unit fan

Input power supply abnormality

An abnormality has occurred in the input current or voltage

Output power supply abnormality

An abnormality has occurred in the output current or voltage

Temperature anomaly

The temperature of the power supply unit has exceeded the abnormal threshold

Fan error

An abnormality has occurred in the power supply unit fan.

4. Related Commands

Related commands are indicated below.
For command details, refer to the command reference.

Operations Operating commands

Display power supply unit status

show power-supply

5. Examples of Command Execution

5.1. Power Supply Unit Status Check

Display the status of the power supply unit.

  • In a non-stack configuration

    Yamaha# show power-supply
Slot Model        Serial     Status                   Volt Watt  Max FanSpeed
-------------------------------------------------------------------------------
 1.1 YPSU-550W-AC Z8X00000DZ Powered                  104V  61W 750W  3864rpm
 1.2 YPSU-550W-AC Z8X00001DZ Failed(In)                 0V   0W 750W  2164rpm

  • In a stack configuration

    Yamaha# show power-supply
Slot Model        Serial     Status                   Volt Watt  Max FanSpeed
-------------------------------------------------------------------------------
 1.1 YPSU-550W-AC Z8X00000DZ No AC-cable                0V   0W 750W     0rpm
 1.2 YPSU-550W-AC Z8X00001DZ Powered                  105V  61W 750W  4320rpm
 2.1 YPSU-550W-AC Z8X00002DZ Powered                  105V  35W 750W  4136rpm
 2.2 YPSU-550W-AC Z8X00003DZ Powered                  105V  29W 750W  4208rpm

6. Points of Caution

  • This function cannot be used with power units other than genuine Yamaha power units.

7. Related Documentation