Switch making noise issue

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Sep 6th, 2007
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Hello all,


I got a Switch: 3750-24PS, it is making noise. It sounds like fan issues.


captured "show env all" and "show log", no errors found.


checked Cisco 3750 data sheet:

Cisco Catalyst 3750-24PS: 38-42 dB45dB.



Anybody know the acceptable dB range? And how could I measure the dB?

Does cisco have specific procedure for noises issue?


Your reply and post is appreciated.



Howard

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master001 Wed, 09/12/2007 - 06:05
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Anybody has better idea? If the switch needs to be sent to RMA, any testing procedure that I need to apply?


I appreciate your reply.



Howard

avmabe Wed, 09/12/2007 - 06:22
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nope, just call the TAC for an RMA and say the fans are roaring and need to be replaced before they fail and your network goes down.

paul.matthews Wed, 09/12/2007 - 07:11
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A noisy fan is normally a fan that will die soon.


You need to contact whoever supports your network - be it Cisco or a Partner to arrange replacement.

glen.grant Wed, 09/12/2007 - 08:21
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A 3750 fan shouldn't be failing already they aren't that old , not saying it can't . I believe the fans are variable speeds and they can be noisy if they ramp up if the closet temp is high , then this is normal .

master001 Wed, 09/12/2007 - 09:34
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Thank you guys for your reply.


I did check the switch temp. via "sh env. temp."

it showed " temperature: OK"


I also doubt the closet temperature is a factor that causes fan issue.

Is it possible in this situation?


I just want to confirm it before the switch sent for warranty.



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