Smart Power

Feature history for Smart Power

This table provides release and platform support information for the features explained in this module.

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

Release

Feature name and description

Supported platform

Cisco IOS XE 17.18.1

Smart Power: Smart Power is a power management capability that enables energy-saving operations by managing power consumption of device components and connected devices. It provides interfaces to create an energy management domain for C9350 devices and its connected PoE devices.

Cisco C9350 Series Smart Switches

Cisco IOS XE 17.18.2

Sleep mode: Smart Power level 2 functions as the sleep mode.

Cisco C9350 Series Smart Switches

Introduction to Smart Power

Smart Power is a power management capability that enables energy-saving operations by managing power consumption of device components and connected devices.

  • Provides interfaces to create an energy management domain for C9350 devices.

  • Manages power consumption of connected PoE devices.

Power saving features

Power saving features are available both on the device and on the PoE interface, each offering specific options for reducing energy consumption.

On the device

  • auto-off optics

  • auto-off led

  • auto-off PSU

On the PoE interface

  • power-down

  • full power

  • sleep

If auto-off features are enabled explicitly using the enable command, the configured feature will be enabled with or without any Smart Power level option.

Power levels

Smart Power has a set of defined power levels from 0 to 10 which provides infrastructure to software features to enable or disable at appropriate power saving levels.

Power level 0 on PoE interfaces turns off power. This setting is used for scheduled or manual shutdown of PoE ports.

Default power level

The default power level for device and PoE interfaces is 10 (Full Power).

Supported Smart Power Levels and Their Functions

This topic provides information about the available Smart Power levels and their associated functions on the device and PoE interface.

Table 1. On the device
Smart Power level Function
1-6, 10 Full Power
7 Power-save auto-off PSU, LED, and optics features enabled
8 Power-save auto-off LED and optics features enabled
9 Power-save auto-off optics feature enabled
Table 2. On the PoE interface
Smart Power level Function
0 Power down
1, 3-10 Full power
21 Sleep
1 See Operational Considerations for IP Phone as Endpoint in Sleep Mode for details.

Benefits of Smart Power

Smart Power reduces energy costs, enables scheduled PoE port power control, and simplifies enforcement of energy-saving policies.

  • Lowers energy costs by turning off unused hardware automatically.

  • Enables scheduled PoE port power control.

  • Simplifies enforcement of energy-saving policies.

How to Configure Smart Power

Smart Power is disabled by default. It must be enabled on the device before you configure different power levels on the device and the interfaces.

Enable Smart Power

Procedure

Step 1

enable

Example:

Device> enable

Enables privileged EXEC mode. Enter your password, if prompted.

Step 2

configure terminal

Example:

Device# configure terminal

Enters global configuration mode.

Step 3

smartpower domain domain-name security shared-secret domain-password protocol udp port udp-port-number

Example:

Device(config)# smartpower domain cisco security shared-secret cisco123 protocol udp port 43440

Enables Smart Power on the network device, assigns it to a domain with the specified domain name, sets the domain security mode, and sets the domain password to authenticate all communication in the domain.

Step 4

end

Example:

Device(config)# end

Exits to privileged EXEC mode.

Configure Power Levels

Configuring power levels involves setting the appropriate transmission power for devices to ensure optimal performance and compliance with regulatory requirements.

Global Configuration

This procedure shows the steps to configure Smart Power level on the device.

Procedure

Step 1

enable

Enables privileged EXEC mode. Enter your password, if prompted.

Step 2

configure terminal

Enters global configuration mode.

Step 3

smartpower level levels

Specifies the Smart Power level. The range varies from 1 to 10.

  • 1-6,10 - Full Power

  • 7 - Power-save auto-off 'PSU, led and optics' features enabled

  • 8 - Power-save auto-off 'led and optics' features enabled

  • 9 - Power-save auto-off 'optics' feature enabled

Example:
Device(config)# smartpower level 1

Step 4

end

Exits to privileged EXEC mode.

Interface Configuration

This procedure shows the steps to configure Smart Power level on the interface.

Procedure

Step 1

enable

Enables privileged EXEC mode. Enter your password, if prompted.

Step 2

configure terminal

Enters global configuration mode.

Step 3

interface interface-name

Enters interface configuration mode for the specified interface.

Step 4

smartpower level levels

Specifies the Smart Power level. The range varies from 0 to 10.

  • 0 - Power Down

  • 1,3-10 - Full Power

  • 2 - Sleep

Example:
Device(config-if)# smartpower level 0

Step 5

end

Exits to privileged EXEC mode.

Configure Recurrences

Procedure

Step 1

enable

Enables privileged EXEC mode. Enter your password, if prompted.

Step 2

configure terminal

Enters global configuration mode.

Step 3

time-range time-range-name

Assigns a name to the time range, and enters the time-range configuration mode. If you do not configure a time range, go to Step 6.

Use the absolute and the periodic time-range configuration commands to specify times and days for a recurrence. You can use one absolute condition and multiple periodic conditions.

Example:

Device(config)# time-range T1

Step 4

absolute start hh:mm day_of_month month year end hh:mm day_of_month month year

Sets the start time and day for the recurrence. If the absolute condition has an end time and day, the domain member ignores these values.

  • hh:mm —Specifies the time (24-hour format) in hours and minutes.

  • day month year —Specifies the date.

  • day_of_month —The range is from 1 to 31.

  • month —The range is from January to December.

  • year —The minimum year is 1993.

When configuring the absolute time range, the wild card * option is not supported for day_of_month and month.

Example:

Device(config-time-range)# absolute start 17:20 10 June 2025 end 17:22 10 June 2025

Step 5

interface interface-name

Enters interface configuration mode for the specified interface.

Step 6

smartpower level level recurrence importance importance at minute hour day_of_month month day_of_week time-range time-range-name

Schedules a power-on or power-off event.

  • level level —Specifies the power level.

    • To power off a PoE port, enter 0.

    • To power on PoE port, enter 10.

  • importance importance —The event occurs if the importance value of the endpoint is less than or equal to the importance value. The range is from 1 to 100.

  • at minute hour day_of_month month day_of_week —Specifies the time (24-hour format) in cron format for the recurrence.

    • minute —The range is from 0 to 59. Use * for the wildcard.

    • hour —The range is from 0 to 23. Use * for the wildcard.

    • day_of_month —The range is from 1 to 31. Use * for the wildcard.

    • month —The range is from 1 (January) to 12 (December). Use * for the wildcard.

    • day_of_week —The range is from 0 to 7. 0 and 7 are Sunday. Use * for the wildcard.

  • time-range time-range-name —Specifies the time range for the recurrence.

Example:

Device(config-if)# smartpower level 0 recurrence importance 1 at 30 20 * * 5

Specifies that every Friday the port will go down at 20:30.

Device(config-if)# smartpower level 10 recurrence importance 1 at 30 08 * * 1

Specifies that every Monday the port will be up at 8:30.

Device(config-if)# smartpower level 0 recurrence importance 100 time-range T1

Step 7

end

Exits to privileged EXEC mode.

Operational Considerations for IP Phone as Endpoint in Sleep Mode

When a scheduled recurrence or time-range for Smart Power level 2 expires, the IP phone remains in a deep-sleep state, and its entry is removed. In this state, the IP phone does not automatically return to Full Power (Level 10).

Use one of the following methods to wake the IP phone from sleep state:

Manual Recovery: Perform a shutdown followed by a no shutdown on the interface connected to the IP phone.

Recommended Configuration Sequence: Follow the sequence of level 2 and level 0 for time-range and level 2,0 and 10 for recurrence at commands.

Configuration Example Using time-range

interface GigabitEthernet3/0/11
smartpower level 2 recurrence importance 100 time-range sleep_time
smartpower level 0 recurrence importance 100 time-range portshut
end

Configuration Example Using recurrence at

interface GigabitEthernet3/0/11
smartpower level 2 recurrence importance 100 at 10 0 26 9 *   -> sleep
smartpower level 0 recurrence importance 100 at 48 1 26 9 *   -> shut
smartpower level 10 recurrence importance 100 at 49 1 26 9 *  -> no shut
end

Verify the Smart Power configuration

Verify the Smart Power status

Device#show smartpower 
SmartPower is Disabled

Verify the Smart Power running version

Device#show smartpower 
SmartPower is Enabled
IOS Version:  17.18.20250608:013424101
SmartPower Version:  1.0
Powernet SDK Version:  4.0.1

Verify the Smart Power Domain

Device#show smartpower domain 
Name      : 9350 
Domain    : cisco
Protocol  : udp
IP        : 192.168.1.1
Port      : 43440

Display the Smart Power Status with Default Level for Switch and PoE Interface as 10 (Full Power)

Device#show smartpower 
Module/
Interface   Role              Name                  Usage      Category  Lvl   Imp  Type
---------   ----              ----                  -----      --------  ---   ---  ----
            C9350-24P         4M-Mix-9350-1         78.0  (W)  consumer  10    1    parent
            C9350-48TX        4M-Mix-9350-3         155.0 (W)  consumer  10    1    parent
Subtotals: (Consumer: 233.0 (W), Meter: 0.0 (W),
Total: 233.0 (W), Count: 2


Device#show smartpower children 
Module/
Interface   Role              Name                  Usage      Category  Lvl   Imp  Type
---------   ----              ----                  -----      --------  ---   ---  ----
Gi1/0/1     WS-C2960CPD-8TT-L SW-Choya8             7.2   (W)  consumer  10    1    PoE
Gi1/0/3     WS-C3560CX-8PT-S  c3560-Raitt1          20.0  (W)  consumer  10    1    PoE
Gi1/0/4     interface         Gi1.0.4               9.2   (W)  consumer  10    1    PoE
Gi1/0/5     interface         Gi1.0.5               9.1   (W)  consumer  10    1    PoE
Gi1/0/6     interface         Gi1.0.6               5.1   (W)  consumer  10    1    PoE

Displaying Smart Power Status: With Smart Power level as 9 (auto-off optics) on the switch

Device#show smartpower 

Module/
Interface   Role              Name                  Usage      Category  Lvl   Imp  Type
---------   ----              ----                  -----      --------  ---   ---  ----
            C9350-24P         4M-Mix-9350-1         78.0  (W)  consumer  10    1    parent
            C9350-48TX        4M-Mix-9350-3         155.0 (W)  consumer  10    1    parent
Subtotals: (Consumer: 233.0 (W), Meter: 0.0 (W),
Total: 233.0 (W), Count: 2


Device(config)#smartpower level 9 

*Jun 10 17:03:39.649 GMT: SMRTPWR:INFO:SmartPower level 9 is configured on switch 3
*Jun 10 17:03:39.649 GMT: SMRTPWR:INFO:SmartPower level 9 is configured on switch 1

Device(config)#do show smartpower 

Module/
Interface   Role              Name                  Usage      Category  Lvl   Imp  Type
---------   ----              ----                  -----      --------  ---   ---  ----
            C9350-24P         4M-Mix-9350-1         77.0  (W)  consumer  9     1    parent
            C9350-48TX        4M-Mix-9350-3         154.0 (W)  consumer  9     1    parent
Subtotals: (Consumer: 231.0 (W), Meter: 0.0 (W),
Total: 231.0 (W), Count: 2

Verify if the auto-off PSU and LED feature is disabled

Device(config)#do show hardware led | i LED  
LED auto-off: Disabled
LED Hardware State: NORMAL

Display Smart Power Status with Smart Power Level 8 on the Switch

Device(config)#smartpower level 8 

*Jun 10 17:00:47.596 GMT: SMRTPWR:INFO:SmartPower level 8 is configured on switch 1
*Jun 10 17:00:47.596 GMT: SMRTPWR:INFO:SmartPower level 8 is configured on switch 3

Device(config)#do show smartpower 

Module/
Interface   Role              Name                  Usage      Category  Lvl   Imp  Type
---------   ----              ----                  -----      --------  ---   ---  ----
            C9350-24P         4M-Mix-9350-1         78.0  (W)  consumer  8     1    parent
            C9350-48TX        4M-Mix-9350-3         157.0 (W)  consumer  8     1    parent
Subtotals: (Consumer: 235.0 (W), Meter: 0.0 (W),
Total: 235.0 (W), Count: 2

Verify if the auto-off PSU feature is disabled

Device(config)#do show stack-power detail | i auto-off 
Power Supply auto-off: Enable

Verify the auto-off LED and optics feature is enabled

Device(config)#do show hardware led | i LED   
LED auto-off: Enabled
LED Hardware State: OFF

Display Smart Power Status with Smart Power Level 7 on the Switch

Device(config)#smartpower level 7   
*Jun 10 17:03:39.649 GMT: SMRTPWR:INFO:SmartPower level 7 is configured on switch 3
*Jun 10 17:03:39.649 GMT: SMRTPWR:INFO:SmartPower level 7 is configured on switch 1

Device(config)#do sh smartpower 
Module/
Interface   Role              Name                  Usage      Category  Lvl   Imp  Type
---------   ----              ----                  -----      --------  ---   ---  ----
            C9350-24P         4M-Mix-9350-1         77.0  (W)  consumer  7     1    parent
            C9350-48TX        4M-Mix-9350-3         159.0 (W)  consumer  7     1    parent
Subtotals: (Consumer: 236.0 (W), Meter: 0.0 (W),
Total: 236.0 (W), Count: 2

Verify if the auto-off PSU, LED, and optics feature is enabled

Device(config)#do show stack-power detail | i auto-off 
Power Supply auto-off: Enable

Device(config)#do show hardware led | i LED 

LED auto-off: Enabled
LED Hardware State: OFF

Display the running configuration with Smart Power level 0 and 10 using recurrence

Device#show running-config interface GigabitEthernet 8/0/1 
Building configuration...
Current configuration : 157 bytes
!
interface GigabitEthernet8/0/1
 smartpower level 0 recurrence importance 1 at 30 20 * * 5 >> Every Friday @ 20:30 the port will go down
 smartpower level 10 recurrence importance 1 at 30 08 * * 1   >> Every Monday @ 08:30 the port will be up.
end

Below are the logs when interface is going down at level 0:

*May  3 20:30:27.140 GMT: %ILPOWER-5-PD_ENTRY_REMOVAL: Interface GigabitEthernet8/0/1: power device entry 
removed, admin_state=OFF oper_state=OFF
*May  3 20:30:28.287 GMT: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet8/0/1, changed state to down        
*May  3 20:30:29.292 GMT: %LINK-3-UPDOWN: Interface GigabitEthernet8/0/1, changed state to down

Below are the logs when interface coming up at level 10:

May 6 08:30:00.463 GMT: %ILPOWER-5-DETECT: Interface Gi8/0/1: Power Device detected: IEEE PD
May 6 08:30:01.469 GMT: %ILPOWER-5-POWER_GRANTED: Interface Gi8/0/1: Power granted
May 6 08:30:05.708 GMT: %LINK-3-UPDOWN: Interface GigabitEthernet8/0/1, changed state to up
May 6 08:30:06.707 GMT: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet8/0/1, changed state to up

Display the running configuration with Smart Power level 0 and 10 using recurrence and time range

Device# show time-range 
time-range entry: T1 (inactive)
   absolute start 17:20 10 June 2025 end 17:22 10 June 2025
   used in: Smartpower

show smartpower recurrences 
System level recurrence
Level  Time-range
-----  ----------
Id     Interface  Class Action Lvl Cron/Time-range
--     ---------  ----- ------ --- ---------------
1      Gi1/0/1    QUERY SET     0  minutes: 15 hour: 17 day: 10 month: 6 weekday: 2
2      Gi1/0/1    QUERY SET     0  T1
3      Gi1/0/1    QUERY SET    10  minutes: 17 hour: 17 day: 10 month: 6 weekday: 2
Alarms
Endpoint        Id    Interface  Lvl Status
--------        --    ---------  --- ------

System Messages with Smart Power level as 0 and 10

System Message Sequences for Smart Power Levels


Level 0 was configured at 17:15  
*Jun 10 17:15:38.348 GMT: %ILPOWER-6-SET_AVAILABLE_ILPOWER: Available POE budget for switch 1 is updated. New available POE budget = 395.5 Watts
*Jun 10 17:15:38.349 GMT: %ILPOWER-5-PD_ENTRY_REMOVAL: Interface GigabitEthernet1/0/1: power device entry removed, admin_state=OFF oper_state=OFF
*Jun 10 17:15:39.373 GMT: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to down
*Jun 10 17:15:40.373 GMT: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to down

Level 10 was configured at 17:17  
*Jun 10 17:17:30.824 GMT: %ILPOWER-5-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
*Jun 10 17:17:30.824 GMT: %ILPOWER-6-SET_AVAILABLE_ILPOWER: Available POE budget for switch 1 is updated. New available POE budget = 365.5 Watts
*Jun 10 17:17:31.824 GMT: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted

Level 0 was configured with time-range start 17:20 and end 17:22  
*Jun 10 17:20:39.586 GMT: %ILPOWER-6-SET_AVAILABLE_ILPOWER: Available POE budget for switch 1 is updated. New available POE budget = 395.5 Watts
*Jun 10 17:20:39.588 GMT: %ILPOWER-5-PD_ENTRY_REMOVAL: Interface GigabitEthernet1/0/1: power device entry removed, admin_state=OFF oper_state=OFF
*Jun 10 17:23:40.874 GMT: %ILPOWER-5-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
*Jun 10 17:23:40.874 GMT: %ILPOWER-6-SET_AVAILABLE_ILPOWER: Available POE budget for switch 1 is updated. New available POE budget = 365.5 Watts
*Jun 10 17:23:41.876 GMT: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/1: Power granted
*Jun 10 17:27:44.723 GMT: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to up
*Jun 10 17:27:45.723 GMT: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to up