Cisco 1000BaseT SFP modules in a 3750 overheating

Asked Aug 19 '15 at 20:35

Active Jun 04 '16 at 19:02

Viewed 264 times

I have a 3750 responsible for switching in my DMZ. Every once in a while one of the gigabit links will go down although ios and the server attached to it report the link is up (activity lights, etc).

My solution is to remove the 1000BaseT SFP module (which is almost too hot to handle) and let it cool off. Once plugged back in, everything returns to normal for about a week or two. The SFP isn't the issue, I've replaced it with several.

Does anyone have experience with SFP modules overheating?

EDIT: the switch CAN be moved. Just not to another rack.

edited Aug 19 '15 at 20:52

asked Aug 19 '15 at 20:35

h3rrmiller

If you cant move anything, we can't do much. An electric fan ? – yagmoth555 Aug 19 '15 at 20:51
Sorry, I wasn't clear. It can be moved. Just not to another rack. Currently it sits on a shelf towards the top of the rack. – h3rrmiller Aug 19 '15 at 20:53
Have you checked that the switch cooling fan or fans is/are working. – joeqwerty Aug 19 '15 at 20:58
yes, they work. The rest of the switch has a pretty consistent temperature. The SFP modules are the only part that are hot. – h3rrmiller Aug 19 '15 at 20:59

Cisco 1000BaseT SFP modules in a 3750 overheating

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