How to view information about power supplies on S series switches

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For S series switches (except S1700), run the display power command to view the power supply status.
[HUAWEI] display power
PowerID Online Mode State Current(A) Voltage(V) RealPwr(W)
PWR1 Present AC NotSupply - - -
PWR2 Present AC Supply 0.82 53.40 43.79
PWR3 Present AC Supply 0.97 53.51 51.90
PWR4 Present AC Supply 0.95 53.51 50.83
The State field indicates the power supply status. If the State displays NotSupply, the power module does not supply power. Check whether the power supply is installed properly or whether the power switch is turned on.
Besides, you can run the display power system command on S series modular switches to check the power of each card and available power of the system. Before installing a switch or expanding the system capacity, decide whether the power capacity needs to be expanded according to the power consumption of the switch.
[HUAWEI] display power system
The total power supplied : 800.00(W)
The maximum power needed : 797.00(W)
The remain power : 3.00(W)
The system rated power detail information :
-------------------------------------------------
Slot BoardName State Power(W)
-------------------------------------------------
2 LPU board Lack 61.00
12 LPU board On 64.00
14 MPU board On 105.00
CMU1 CMU board On 1.00
CMU2 CMU board On 1.00
FAN1 FAN board On 43.00
FAN2 FAN board On 43.00
PWR1 PWR board On 800.00
The meanings of some fields are as follows:
- The total power supplied: indicates the total power of the system.
- The maximum power needed: indicates the maximum power required by the system.
- The remaining power: indicates the available power of the system.
- Power (W): indicates the power of each card.

Other related questions:
Check the PoE status on an S series switch
Command for displaying PoE status of S series switches:

<HUAWEI> display poe information
PSE Information of slot 0:
    User Set Max Power(mW)     : 739200     //Set the maximum output power. Use the maximum power by default.
    POE Power Supply(mW)       : 369600     //PoE power supply, which is determined by the PoE power supply configured on the device.
    Available Total Power(mW)  : 369600     //Total available power.
    Total Power Consumption(mW): 0          //Total output power.     
    Power Peak Value(mW)       : 0          //Peak output power.  
    Power-Management Mode      : auto
    Power High Inrush          : disable

<HUAWEI> display poe power interface gigabitethernet 0/0/3
Port PD power(mW)           : 3710          //Output power of the interface.                                           
Port PD class               : 2             //Classes of PDs. The system classifies PDs based on their maximum power.                                           
Port PD reference power(mW) : 7000          //Reference power of the PD.                                   
Port user set max power(mW) : 15400         //Set the maximum output power of the port.                                    
Port PD peak power(mW)      : 3816          //Peak power of the PDs connected to the port.                                          
Port PD average power(mW)   : 3487          //Average power of the PDs connected to the port.    



How to view detailed information about 802.1x authentication users on S series switches
For S series switches (except the S1700), you can perform the following operations in any view to check detailed information about online 802.1x authentication users. - In NAC common mode (applicable to switches running all versions): [HUAWEI] display access-user //Obtain indexes of 802.1x authentication users based on the users' MAC or IP addresses. [HUAWEI] display access-user user-id 1 //Check information about the users based on their indexes. - In NAC unified mode (applicable to switches running V200R005C00 and later versions): [HUAWEI] display access-user access-type dot1x //Check information about online 802.1x authentication users. [HUAWEI] display access-user user-id 1 //You can also run the display access-user username user-name detail command on switches running V200R007C00 and later versions to check detailed information about 802.1x authentication users.

Whether power modules on S series switches are hot swappable
Power modules of S series switches are hot swappable. Install and remove power modules when the device is running normally and safely. 1:1 mentioned in the product documentation indicates power module backup, which means 1+1 backup. You can use Hardware Query Tool to query details.

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