Cisco 4510R-E 4200ACV question

[CSCO10196333]

I am doing some DOA testing before I send the switch to site when I noticed that when I issue the show power command I receive the following output.

Power Fan Inline
Supply Model No Type Status Sensor Status
------ ---------------- --------- ----------- ------- -------
PS1 PWR-C45-4200ACV AC 4200W bad/off bad/off bad/off
PS1-1 off
PS1-2 off
PS2 PWR-C45-4200ACV AC 4200W good good good
PS2-1 220V good
PS2-2 220V good

Power supplies needed by system : 1
Power supplies currently available : 1

Power Summary Maximum
(in Watts) Used Available
---------------------- ---- ---------
System Power (12V) 552 1360
Inline Power (-50V) 0 3608
Backplane Power (3.3V) 40 40
---------------------- ---- ---------
Total 592 (not to exceed Total Maximum Available = 4200)

Power Measurement Inline Power (-50V)
(in Watts) (+/- 50Watts)
------------------ -------------------
PS1 0
PS2 50
------------------ -------------------
Total 50

Why do I only get PS2 50 instead of 100. I've moved both leads onto the other PSU I get the following.

Power Fan Inline
Supply Model No Type Status Sensor Status
------ ---------------- --------- ----------- ------- -------
PS1 PWR-C45-4200ACV AC 4200W good good good
PS1-1 220V good
PS1-2 220V good
PS2 PWR-C45-4200ACV AC 4200W bad/off bad/off bad/off
PS2-1 off
PS2-2 off

Power supplies needed by system : 1
Power supplies currently available : 1

Power Summary Maximum
(in Watts) Used Available
---------------------- ---- ---------
System Power (12V) 552 1360
Inline Power (-50V) 0 3608
Backplane Power (3.3V) 40 40
---------------------- ---- ---------
Total 592 (not to exceed Total Maximum Available = 4200)

Power Measurement Inline Power (-50V)
(in Watts) (+/- 50Watts)
------------------ -------------------
PS1 100
PS2 0
------------------ -------------------
Total 100

I have moved the PSU's so they in caes its a back plane issue and the error moves onto PS1. If I run only 1 cable the PSU still works.

Is this a faulty PSU or software or is it nothing to worry about?

I have 2 psu's in a Cisco CAT 4510R-E with only 1 x 48 port card and SUP7-E. One of the PSU's is turned off.

This is the 3rd Cisco 4510R-E I have installed recently and haven't seen this issue before.

Regards

Steve

[Leo Laohoo]

There is a reason why some PSU sizes have dual power feed ins.  These sizes are NOT meant to be operational with just a single power feed in.  

[CSCO10196333]

Thanks for that Leo but maybe I didn't ask the question correctly.

I just wondered why when 2 power leads are plugged into one psu I get a 100 reading and when I move them over and power up the other psu I only get a 50 reading. Both leads are plugged in and on the show power it says both are good.

This didn't happen with the other 2 Cisco cat 4510r-e's that I've just installed.

Regards

Steve

[Leo Laohoo]

I just wondered why when 2 power leads are plugged into one psu I get a 100 reading and when I move them over and power up the other psu I only get a 50 reading. Both leads are plugged in and on the show power it says both are good.

That's just it.  Each PSU requires 2 power feed in.  

[CSCO10196333]

Hello Leo.

Both psu's have 2 leads but because I only have 2 power cables I have to power down one psu then move both power leads onto the other.

When I power up the psu with 2 leads I still only get 50 reading instead of 100 but both psu feeds say they are good.

This only happens on 1 psu. The other is fine. Possible faulty PSU? 

When I run on 1 lead the psu says 0 but when I power add another back its says 50.

Sorry if I haven't been clear about this.

Steve

[chrihussey]

Can I suggest flipping the power supplies to see if it follows or stays with the slot?

[CSCO10196333]

Hi Chrihussey

Yes I have tried swapping slots but weird thing is it works even with 1 lead in the allegedly faulty power port.

Its only a testing switch but just found it really strange.

Steve

[chrihussey · Accepted solution]

I agree. I missed that it moved with the PS in your initial post. May be a bad PS or possibly a cosmetic thing in how it is reporting the level.

Suggest checking markings/labels for different hardware revs and then possibly opening a case for clarification. Might be able to get it RMA'd.

[CSCO10196333]

Thanks chrihussey and Leo. Just raising an RMA with the suppliers now.

Regards

Steve

[Leo Laohoo]

Sounds like a faulty PSU to me, which is odd.  

If the input feed outlet is faulty, there should be a RED LED light on.