configure power supply

configure power supply ps_num {auto | on}

Description

Configures a power supply for either automatic power management, or forced on, regardless of the impact to the total available system power.

Syntax Description

ps_num Specifies the slot number of the installed power supply unit (PSU) to which this command applies.
auto Specifies that ExtremeXOS determines the enabled or disabled state of the PSU to maximize total system power. This is the default.
on Specifies that the PSU be enabled even if ExtremeXOS determines it should be disabled. This action may reduce the total available system power and may result in one or more I/O modules powering down.

Default

The default setting is auto; ExtremeXOS either enables or disables the PSU in order to maximize total system power.

Usage Guidelines

If a switch has PSUs with a mix of both 220V AC and 110V AC inputs, ExtremeXOS maximizes system power by automatically taking one of two possible actions:
  • If all PSUs are enabled then all PSUs must be budgeted at 110V AC to prevent overload of PSUs with 110V AC inputs.

OR
  • If the PSUs with 110V AC inputs are disabled, then the PSUs with 220V AC inputs can be budgeted with a higher output per PSU.

ExtremeXOS computes the total available power using both methods and automatically uses the PSU configuration that provides the greatest amount of power to the switch. The following table lists combinations where ExtremeXOS maximizes system power by disabling the PSUs with 110V AC inputs.
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PSU Combinations Where 110V PSUs Are Disabled

Number of PSUs with 220VAC Inputs Number of PSUs with 110VAC Inputs

2

1

3

1

3

2

4

1

4

2

5

1

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BlackDiamond X8 Series PSU Combinations Where 110V PSUs Are Disabled

Number of PSUs with 220VAC Inputs Number of PSUs with 110VAC Inputs

1

1

2

1

3

1

3

2

4

1

4

2

4

3

5

1

5

2

5

3

6

1

6

2

For all other combinations of 220V AC and 110V AC PSUs, ExtremeXOS maximizes system power by enabling all PSUs and budgeting each PSU at 110V AC.

In addition to the PSU, you can specify the following options:
  • auto—Specifies that ExtremeXOS determines the enabled or disabled state of the PSU to maximize total system power. This is the default.

  • on—Specifies that the PSU be enabled even if ExtremeXOS determines it should be disabled. This action may reduce the total available system power and may result in one or more I/O modules powering down.

You can override automatic power supply management to enable a PSU with 110V AC inputs that ExtremeXOS disables if the need arises, such as for a planned maintenance of 220V AC circuits. If the combination of AC inputs represents one of those listed in in the table above, you can turn on a disabled PSU using the configure power supply ps_num on command.

Note

Note

If you override automatic power supply management, you may reduce the available power and cause one or more I/O modules to power down.

To resume using automatic power supply management on a PSU, use the configure power supply ps_num auto command. The setting for each PSU is stored as part of the switch configuration.

To display power supply status and power budget information use the show power and show power budget commands.

Example

The following command configures the PSU in slot 1 to be forced on when either 110V AC or 220V AC power input is present, overriding automatic power management:

configure power supply 1 on

The switch displays the following message:

In a mixed environment of 110V and 220V AC inputs, power management may
automatically disable 110V supplies to maximize the system power budget.
By specifying 'on', you wish to override power management and enable the
specified power supply.  This may cause the system power budget to decrease
and one or more I/O cards may be powered off as a result.
Are you sure you want to continue? (y/n)

Enter y to continue.

History

This command was first available in ExtremeXOS 11.3.

Platform Availability

This command is available only on modular switches.