Switch 3750 - Faulty power supply

[mlimouni821]

Hi everybody,

Currently, I have to replace a faulty power switch on a 3750 that indicated that the RPS is not functional. thats the situation of the system power :

mtl4c1r1cs3750-1#show env all
FAN 1 is OK
FAN 2 is OK
FAN PS-1 is OK
FAN PS-2 is OK
TEMPERATURE is OK
Temperature Value: 21 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 46 Degree Celsius
Red Threshold    : 60 Degree Celsius
SW  PID                 Serial#     Status           Sys Pwr  PoE Pwr  Watts
--  ------------------  ----------  ---------------  -------  -------  -----
1A  C3KX-PWR-715WAC     LIT15480W1V  OK              Good     Good     715/0
1B  C3KX-PWR-715WAC     DTN1542K22E  OK              Good     Good     715/0
2A  C3KX-PWR-715WAC     DTN1546K1B4  OK              Good     Good     715/0
2B  C3KX-PWR-715WAC     LIT16011EH0  OK              Good     Good     715/0

SW  Status          RPS Name          RPS Serial#  RPS Port#
--  -------------   ----------------  -----------  ---------
1   Not Present     <>
2   Not Present     <>

mtl4c1r1cs3750-1#show env fan
FAN 1 is OK
FAN 2 is OK
FAN PS-1 is OK
FAN PS-2 is OK

How you can see, the RPS is not existe.

I know that the PS-1 in the faulty one (show in monitoring), but I can't determine witch one in the switch I have to change the right one or the left one.

Thanks in advance for your answers.

[Reza Sharifi]

Hi,

Your internal Power supplies are all fine.

RPS is an external power supply.  Do you have one installed?

http://www.cisco.com/c/en/us/products/switches/redundant-power-system-2300/index.html

HTH

[mlimouni821]

Hi,

the RPS is managed by the switch, Also I have two switch in stack

Thx

[jhager001]

Looking at it from the back, it's the left one.

[mlimouni821]

Thx jhager001. I will replace it tomorrow and add my feedback.

[Reza Sharifi · Accepted solution]

You have 2 switches in the stack and each switch has 2 PSUs for a total of 4 PSUs.

below shows all PSUs are ok
 

1A  C3KX-PWR-715WAC     LIT15480W1V  OK              Good     Good     715/0
1B  C3KX-PWR-715WAC     DTN1542K22E  OK              Good     Good     715/0
2A  C3KX-PWR-715WAC     DTN1546K1B4  OK              Good     Good     715/0
2B  C3KX-PWR-715WAC     LIT16011EH0  OK              Good     Good     715/0

[mlimouni821]

you meens that the power supply is not the cause ? 

[Reza Sharifi]

There is no issue with your power supplies. They are all ok according to what you posted.

HTH

[jhager001]

We get that. He's not asking for assurance, he's asking for an answer on which is PS-1 and which is PS-2.

[Reza Sharifi]

Actually, that is not what he is asking according to his first post:

"I have to replace a faulty power switch on a 3750"

The output he posted does not show any faulty power supply.

[jhager001]

That's a statement bro, 

"I know that the PS-1 in the faulty one (show in monitoring), but I can't determine witch one in the switch I have to change the right one or the left one."

"change the right one or the left one"

"change the right one or the left one"

That's the question. If I can make it any more clear, let me know.

[mlimouni821]

Hi Guys,

After a long discussion with the architect, I convinced him not to replace the power supply because the indicators on the console shows no abnormal situation. just the problem of monitoring :)
Thank you very much for your information even if the procedure was not performed.

[jhager001 · Accepted solution]

Here's an image to verify