All lights go amber

Unanswered Question
Jun 18th, 2007

I have a 3750 switch that, every once and a while, all the lights go amber at once which blocks all ports for a few seconds. I am wondering if "spanning-tree portfast bpduguard default" has anything to do with this problem. I also have portfast turned on for each indivual port which does not connect to a switch.

I have this problem too.
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rplacier Mon, 06/18/2007 - 08:10

I have swamped out the switch once and both times there have been no error messages in the logs.

rplacier Mon, 06/18/2007 - 08:34

Uplink interface is clean and there doesn't seem to be any abnormal errors on any other interface.

Edison Ortiz Mon, 06/18/2007 - 09:49

Interesting, if the switch is blocking all ports, it sounds like a spanning-tree issue.

Do you have another switch connected to this switch ?

Can we see this switch config ?


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