Restrictions for Internal Power Supplies

  • Power Supply configuration is not supported on C9500-32C, C9500-32QC, C9500-48Y4C, and C9500-24Y4C models of the Cisco Catalyst 9500 Series Switches. Use the show environment status command to check the power supply status.

  • For C9500-32C, the power supply with serial number starting with POG has two fans and the power supply with serial number starting with QCS has a single fan. See Configuration Examples for Internal Power Supplies.

Information About Internal Power Supplies

See the device installation guide for information about the power supplies.

How to Configure Internal Power Supplies

Configuring Internal Power Supply

You can use the power supply EXEC command to configure and manage the internal power supply on the device. The device does not support the no power supply EXEC command.

Follow these steps beginning in user EXEC mode:

SUMMARY STEPS

  1. power supply switch_number slot {A | B } { off | on }
  2. show environment power

DETAILED STEPS

  Command or Action Purpose
Step 1

power supply switch_number slot {A | B } { off | on }

Example:


Device# power supply 1 slot A on

Sets the specified power supply to off or on by using one of these keywords:

  • A —Selects the power supply in slot A.

  • B —Selects power supply in slot B.

    Note 

    Power supply slot B is the closest to the outer edge of the device.

  • off —Set the power supply off.

  • on —Set the power supply on.

By default, the device power supply is on.

Step 2

show environment power

Example:


Device# show environment power

Verifies your settings.

Monitoring Internal Power Supplies

Table 1. Show Commands for Power Supplies

Command

Purpose

show environment power [ all | switch switch_number ]

(Optional) Displays the status of the internal power supplies for each device in the stack or for the specified device. The range is , depending on the device member numbers in the stack.

The device keywords are available only on stacking-capable devices.

Configuration Examples for Internal Power Supplies

This example shows how to set the power supply in slot A to off:


Device# power supply 1 slot A off
Disabling Power supply A may result in a power loss to PoE devices and/or switches   
Device#
Jun 10 04:52:54.389: %PLATFORM_ENV-6-FRU_PS_OIR: FRU Power Supply 1 powered off 
Jun 10 04:52:56.717: %PLATFORM_ENV-1-FAN_NOT_PRESENT: Fan is not present
Device#

This example shows how to set the power supply in slot A to on:


Device# power supply 1 slot A on
Jun 10 04:54:39.600: %PLATFORM_ENV-6-FRU_PS_OIR: FRU Power Supply 1 powered on

This example shows the output of the show env power command:

Table 2. show env power Status Descriptions
Field Description

OK

The power supply is present and power is good.

Not Present

No power supply is installed.

No Input Power

The power supply is present but there is no input power.

Disabled

The power supply and input power are present, but power supply is switched off by CLI.

No Response

The power supply is not recognizable or is faulty.

Failure-Fan

The power supply fan is faulty.

Additional References for Internal Power Supplies

MIBs

MIB MIBs Link

All the supported MIBs for this release.

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

Technical Assistance

Description Link

The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies.

To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds.

Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.

http://www.cisco.com/support

Feature History for Internal Power Supplies

This table provides release and related information for features explained in this module.

These features are available on all releases subsequent to the one they were introduced in, unless noted otherwise.

Release

Feature

Feature Information

Cisco IOS XE Fuji 16.9.2

Internal Power Supplies

The switch operates with power supply modules which could be AC, DC or both. Refer the Hardware Installation Guide for more details on power supply units.

Use Cisco Feature Navigator to find information about platform and software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn.