交换机电源功耗很低、甚至为0是否正常

电源指示灯正常，状态正常，但是功率为0

================display power=============== 

 Slot 1:

Input Power: 37.0 W

PowerID  State  Mode   Current(A)  Voltage(V)  Power(W) FanDirection

1        Normal AC     0.0         12.5          0.0     --

2        Normal AC     2.6         12.0        32.3     --

在低功耗的场景下，电源模块在轻负载的时候会偶发有不均流，在刚开始轻载时可能会不太均流，一般随着电源模块负载加重，均流会越来好。

实验室无业务设备：

H3C>dis power                                                                 

 Slot 1:                                                                        

 Input Power: 31.0 W                                                           

 PowerID  State  Mode   Current(A)  Voltage(V)  Power(W) FanDirection          

 1        Normal AC     2.1         11.9        26.3     --                    

 2        Normal AC     0.0         12.4        0.0      --                    

打流后：                                                                       

dis pow                                                                   

dis power                                                                 

 Slot 1:                                                                       

 Input Power: 44.0 W                                                           

 PowerID  State  Mode   Current(A)  Voltage(V)  Power(W) FanDirection          

 1        Normal AC     2.5         11.9        30.3     --                    

 2        Normal AC     0.5         12.4        7.1      --                    

接环成广播风暴，功耗上升             

dis power                                                                 

 Slot 1:                                                                        

 Input Power: 44.0 W                                                           

 PowerID  State  Mode   Current(A)  Voltage(V)  Power(W) FanDirection          

 1        Normal AC     2.5         11.9        31.0     --                    

 2        Normal AC     0.6         12.           8.6      --