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

phrogg · ‎01-20-2021

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 · ‎01-20-2021

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 · ‎01-20-2021

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 · ‎01-20-2021

@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.

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

phrogg · ‎01-26-2021

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 · ‎01-26-2021

Give it a few more weeks.

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

phrogg · ‎01-26-2021

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

kenku · ‎02-20-2021

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

Leo Laohoo · ‎02-20-2021

@kenku wrote:

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

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 · ‎02-21-2021

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

Leo Laohoo · ‎02-21-2021

What is the uptime of the stack?

phrogg · ‎02-22-2021

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

Leo Laohoo · ‎02-22-2021

@phrogg wrote:

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

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 · ‎04-02-2021

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 · ‎04-03-2021

@phrogg wrote:

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

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.