Information About Internal Power Supplies
See the device installation guide for information about the power supplies.
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
See the device installation guide for information about the power supplies.
This section list the procedures to configure internal power supplies.
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:
Command or Action | Purpose | |||
---|---|---|---|---|
Step 1 |
power supply switch_number slot {A | B } { off | on } Example:
|
Sets the specified power supply to off or on by using one of these keywords:
By default, the device power supply is on. |
||
Step 2 |
show environment power Example:
|
Verifies your settings. |
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. |
The device uses the supplied power for powering the system resources and also for Power over Ethernet (PoE). Before allocating the PoE power, the operating system allocates a specific amount of power to the system resources such as the power controllers, LEDs, chips, FPGAs, and so on. This is called budgeted power. Budgeted power shows the maximum power that is reserved for the system usage. You can check the actual power consumption and the budgeted power using the show power detail and show power module commands. These show commands also display the Instantaneous Power, Reset Power, and Peak Power.
Instantaneous Power is the power that is utilized at any given time. Peak Power is the maximum power that is consumed by the system at the time it is powered up. Reset Power indicates the amount of power the system is allocated in the reset mode.
Here is a sample output of the show power module command:
Device# show power module
Automatic Module Shutdown : Enabled
Power Budget Mode = SP-PS
shutdown Power Out of In
Mod Model No Priority State Budget Instantaneous Peak Reset Reset
--- -------------------- -------- -------- ------ ------------- ---- ------ -----
1 C9300-48UXM 4 accepted 575 108 108 575 50
--- -------------------- -------- -------- ------ ------------- ---- ------ -----
Total 575
Here is a sample output of the show power detail command:
Device# show power detail
SW PID Serial# Status Sys Pwr PoE Pwr Watts
-- ------------------ ---------- --------------- ------- ------- -----
1A Not Present
1B PWR-C1-1100WAC-P DCC2505D6PZ OK Good Good 1100
PS Configuration Mode : SP-PS
PS Operating state : Stndaln
Power supplies currently active : 1
Power supplies currently available : 1
Automatic Module Shutdown : Enabled
Power Budget Mode = SP-PS
shutdown Power Out of In
Mod Model No Priority State Budget Instantaneous Peak Reset Reset
--- -------------------- -------- -------- ------ ------------- ---- ------ -----
1 C9300-48UXM 4 accepted 575 108 108 575 50
--- -------------------- -------- -------- ------ ------------- ---- ------ -----
Total 575
Power Summary Maximum
(in Watts) Used Available
------------- ------ ---------
System Power 575 575
POE Power 150 525
------------- ------ ---------
Total 725 1100
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 ... Continue? (yes/[no]): yes
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:
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. |
Not Responding |
The power supply is not recognizable or is faulty. |
Failure-Fan |
The power supply fan is faulty. |
Related Topic | Document Title |
---|---|
For complete syntax and usage information for the commands used in this chapter. |
Command Reference (Catalyst 9300 Series Switches) |
For information about the power supplies. |
Cisco Catalyst 9300 Series Switches Hardware Installation Guide |
Related Topic | Document Title |
---|---|
For complete syntax and usage information for the commands used in this chapter. |
Command Reference (Catalyst 9600 Series Switches) |
For information about the power supplies. |
Cisco Catalyst 9600 Series Switches Hardware Installation Guide |
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 Everest 16.5.1aCisco IOS XE Gibraltar 16.11.1 |
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. |
Cisco IOS XE Cupertino 17.8.1 |
Reporting System Power |
show power detail and show power module commands were introduced to display the details of the system power usage. |
Use Cisco Feature Navigator to find information about platform and software image support. To access Cisco Feature Navigator, go to Cisco Feature Navigator.