3500xl switch reboots at random time intervals

Unanswered Question
Jun 15th, 2008

one of our 3500xl switches running ios12.0 reboots a random time intervals. it's happened after a few minutes, or hours. we took the switch out of service and installed a replacement.

i scanned for known bugs but nothing came up.

any ideas?

sounds to me like a hardware issue.

however, at startup, it passes all the POST.


avraham shir-el

I have this problem too.
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Pravin Phadte Mon, 06/16/2008 - 00:06


Do you get the logs of reload ? Or show logs what does it show ?

Does the show flash shows any crash info ?

Let us know if there is any crashinfo for the switch.



ashirel Mon, 06/16/2008 - 00:53

the log shows the reload w/ no errors nor warnings.

show flash: shows a few images, config.text,...

nothing indicating strangeness.

i have it on my desk now, plugged into a console, powered on w/ no nodes connected.

it's behaving, but not especially useful.

no reboots for a few days.

i'll probably plug in some non-production stations and see how it behaves.

glen.grant Mon, 06/16/2008 - 03:57

Its probably some component on the hairy edge of failure and this happens . Those switches are ancient and is probably 10 years old at this point.

ashirel Sat, 06/21/2008 - 22:46

yes, it's vintage 8-nov-2000.

i just got funding to graduate to a 4500 chasis

and retire a whole bunch of the standalone switches from our backbone.



ashirel Sat, 06/21/2008 - 22:42

the logs show a normal reload w/no hint of what initialed it.

sho flash just shows the healthy following:

ios bin

diag bin

html dir







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