CSCvw95683 - Cat1000 freeze, unexpectedly silent reboot and crash issue occurred randomly

[phrogg]

I'm observing the same behavior with a C1000-24T-4X-L running on 15.2(7)E3k. Happens randomly, just recently after only 5 hours of uptime.

[Leo Laohoo]

I am not sure how "accurate" the details in the Bug ID are, but it says that versions affected are 15.2(7)E1 and 15.2(7)E2.  You're running a re-build, 15.2(7)E3k.  
Can you try downgrading to 15.2(7)E3 and verify? 

[phrogg]

Sure, will give it a try. Then again, I'm not quite sure if downgrading from a rebuild like k helps (something to my understanding like a fix level version of x.x.11 for k), which I'm assuming contains several bug fixes within this very release.

[Leo Laohoo]

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@phrogg wrote:

Sure, will give it a try. Then again, I'm not quite sure if downgrading from a rebuild like k helps (something to my understanding like a fix level version of x.x.11 for k), which I'm assuming contains several bug fixes within this very release.

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You'll need to determine if 15.2(7)E3 does keep it stable (until the fix is released).

[phrogg]

Thank you for the hint. downgrading to 15.2(7)E3 indeed keeps the Cat1000 switch stable - at least so far, which would have crashed by now compared to the the k rebuild.

[Leo Laohoo]

Give it a few more weeks. 

Let us know how things go in, say, 8 weeks uptime. 

[phrogg]

Will do. I did set a reminder to check and report back here

[kenku]

Hello Phrogg, may I know the current Status of 15.2(7) E3 ? Since almost 4 weeks past.  Million thanks . 

[Leo Laohoo]

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@kenku wrote:

Hello Phrogg, may I know the current Status of 15.2(7) E3 ? Since almost 4 weeks past.  Million thanks . 

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Give him time.  4 weeks is "just" not enough to pass judgement. 

Alternatively, tap internally and ask the developers to provide the pre-release version.

[phrogg]

Everything is working smoothly with the 15(7) E3. No crashes or any trouble so far.

[Leo Laohoo]

What is the uptime of the stack?

[phrogg]

uptime is 4 weeks, 5 days, 8 hours, and 12 minutes

[Leo Laohoo]

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@phrogg wrote:

uptime is 4 weeks, 5 days, 8 hours, and 12 minutes

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That's good to hear. 
I would say another 4 weeks more should be a good indication if this version is stable or not. 

[phrogg]

So, coming back after another couple of weeks, I had a crash on one switch after approx. 7 weeks of uptime. The crash happened when I tried to access the web interface. It seems to me that crash is highly related to accessing the web interface. My conclusion for now is to shutdown the web UI.

[Leo Laohoo]

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@phrogg wrote:

I had a crash on one switch after approx. 7 weeks of uptime.

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Post the complete output to the following commands: 

sh version
sh log on uptime
dir flash:
dir flash:core

Pray the crash left crashinfo or systeminfo files for us to analyze.