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New Member

Energywise on C3750

Hi

I have connected IP phone 7960 and Axis POE camera 212 onto a C3750 switch.  I have enabled energywise on the switch and I am able to control the phone and camera with the power level control.  The thing I don't understand is that the power usage for both the phone and camera are showing 4 W.  The phone is suppose to be 6.3W and the camera is 3.8W.  Is there a reason why it is showing 4W instead of it's actual power usage?

Weiying Pan

Everyone's tags (2)
8 REPLIES
Cisco Employee

Re: Energywise on C3750

What version of code is running on this switch?

New Member

Re: Energywise on C3750

c3750-ipservices-mz.122-50.SE1.bin

Thanks

Cisco Employee

Re: Energywise on C3750

That release did not properly support displaying the actual power usage.  That feature was added to 12.2(52)SE as part of the fix for CSCsz05235.

New Member

Re: Energywise on C3750

Thanks, but after I uploaded the new firmware into the switch, it still have the problem.

this is the boot info.

BOOT path-list      : flash:c3750-ipservices-mz.122-52.SE.bin
Config file         : flash:/config.text
Private Config file : flash:/private-config.text
Enable Break        : no
Manual Boot         : no
HELPER path-list    :
Auto upgrade        : yes
Auto upgrade path   :
Timeout for Config
          Download:    0 seconds
Config Download
       via DHCP:       disabled (next boot: disabled)

The IP Phone and the IP camera still shows the same 4W at the energywise interfaces list.

So what should I do? Thanks

Cisco Employee

Re: Energywise on C3750

What output do you get from "show energy usage children"?

New Member

Re: Energywise on C3750

Interface   Name                     Usage      Caliber
---------   ----                     _____      _______
            Switch                   89.0  (W)  max
Fa1/0/1     Fa1.0.1                  0.0  (W)   presumed
Fa1/0/2     raghav_phone             4.0  (W)   presumed
Fa1/0/3     Fa1.0.3                  0.0  (W)   presumed
Fa1/0/4     Fa1.0.4                  0.0  (W)   presumed
Fa1/0/5     Fa1.0.5                  0.0  (W)   presumed
Fa1/0/6     Fa1.0.6                  0.0  (W)   presumed
Fa1/0/7     Fa1.0.7                  0.0  (W)   presumed
Fa1/0/8     Fa1.0.8                  0.0  (W)   presumed
Fa1/0/9     Fa1.0.9                  0.0  (W)   presumed
Fa1/0/10    Fa1.0.10                 0.0  (W)   presumed
Fa1/0/11    Fa1.0.11                 4.0  (W)   presumed
Fa1/0/12    Fa1.0.12                 0.0  (W)   presumed
Fa1/0/13    Fa1.0.13                 0.0  (W)   presumed
Fa1/0/14    Fa1.0.14                 0.0  (W)   presumed
Fa1/0/15    Fa1.0.15                 0.0  (W)   presumed
Fa1/0/16    Fa1.0.16                 0.0  (W)   presumed
Fa1/0/17    Fa1.0.17                 0.0  (W)   presumed
Fa1/0/18    Fa1.0.18                 0.0  (W)   presumed
Fa1/0/19    Fa1.0.19                 0.0  (W)   presumed
Fa1/0/20    Fa1.0.20                 0.0  (W)   presumed
Fa1/0/21    Fa1.0.21                 0.0  (W)   presumed
Fa1/0/22    Fa1.0.22                 0.0  (W)   presumed
Fa1/0/23    Fa1.0.23                 0.0  (W)   presumed
Fa1/0/24    Fa1.0.24                 0.0  (W)   presumed
Fa1/0/25    Fa1.0.25                 0.0  (W)   presumed
Fa1/0/26    Fa1.0.26                 0.0  (W)   presumed
Fa1/0/27    Fa1.0.27                 0.0  (W)   presumed
Fa1/0/28    Fa1.0.28                 0.0  (W)   presumed
Fa1/0/29    Fa1.0.29                 0.0  (W)   presumed
Fa1/0/30    Fa1.0.30                 0.0  (W)   presumed
Fa1/0/31    Fa1.0.31                 0.0  (W)   presumed
Fa1/0/32    Fa1.0.32                 0.0  (W)   presumed
Fa1/0/33    Fa1.0.33                 0.0  (W)   presumed
Fa1/0/34    Fa1.0.34                 0.0  (W)   presumed
Fa1/0/35    Fa1.0.35                 0.0  (W)   presumed
Fa1/0/36    Fa1.0.36                 0.0  (W)   presumed
Fa1/0/37    Fa1.0.37                 0.0  (W)   presumed
Fa1/0/38    Fa1.0.38                 0.0  (W)   presumed
Fa1/0/39    Fa1.0.39                 0.0  (W)   presumed
Fa1/0/40    Fa1.0.40                 0.0  (W)   presumed
Fa1/0/41    Fa1.0.41                 0.0  (W)   presumed
Fa1/0/42    Fa1.0.42                 0.0  (W)   presumed
Fa1/0/43    Fa1.0.43                 0.0  (W)   presumed
Fa1/0/44    Fa1.0.44                 0.0  (W)   presumed
Fa1/0/45    Fa1.0.45                 0.0  (W)   presumed
Fa1/0/46    Fa1.0.46                 0.0  (W)   presumed
Fa1/0/47    Fa1.0.47                 0.0  (W)   presumed
Fa1/0/48    Fa1.0.48                 0.0  (W)   presumed
         
Total Displayed: 49     Usage: 97.0

Thanks

Cisco Employee

Re: Energywise on C3750

I believe this points to the switch not being able to report actual power usage.  The fix for the bug I mentioned added support for obtaining the "actual" (as opposed to "presumed") power consumption from the switch hardware (if supported).  If the actual values are not seen in the CLI output, then the switch may be incapable of providing them.

New Member

Re: Energywise on C3750

Why we change the level, the power usage does not change?

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