Temperature 45 degrees on switch stack

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Jun 9th, 2007
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My 3750g switch stack is reporting 45 degrees.

It is a stack of 8 switches. Is this normal temperature? It says that 65 is critical and thats not that far away.

What can be causing this to be so high, cpu proc is 8% constant.

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oj88 Sun, 06/10/2007 - 06:10
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Probably not. Though the spec says that the 3750's operating temp is between 0 to 45?C (unless you're reading is in ?F). But I personally wouldn't want it pegged at the borderline.

What's the ambient temperature? Are the switches installed on an open-bay rack or enclosed? How is air released outside of the rack/cabinet?

If the air is not released, it will circulate inside the cabinet (due to the switches' fan blowers). This will end up virtually like a thermal runaway wherein hot air from one equipment gets sucked into by the next one and so on, making the air very warm in just a few minutes.

glen.grant Sun, 06/10/2007 - 18:07
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It is usually not a switch problem , you need to take a look at how hot the wiring closet is where the switch is located . Some people like to stack them right on top of one another I would keep at least a half inch between each switch .

usanitary Fri, 06/15/2007 - 16:00
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Agree with previous poster, you should have some space in-between switches if possible. We have cable organizers in-between each switch. A nice A/C in the room helps too.


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