How Can I Determine Whether the Device Status Is Normal?

Run the display device [ slot slot-id ] command to view component information and device status. If the Register field displays Registered and the Status field displays Normal, the device status is normal.

This command displays the hardware management status only and does not provide service running status.

<HUAWEI> display device
S5720-28X-PWR-SI-AC's Device status:        
Slot Sub  Type                Online    Power      Register     Status   Role         
-------------------------------------------------------------------------------       
0    -    S5720-28X-PWR-SI    Present   PowerOn    Registered   Normal   Master