02-20-2024 04:33 PM
Hi, we have one c3850 switch stack (c3850-12s +c3850-24t). recently switch c3850-24t rebooted, check the log , it shows "System was restarted by SSO switchover". What does it mean? Is it related to stack port or cable issue? can anyone pls advise? thanks in advance.
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02-22-2024 01:56 AM
Prior to the crash, are there any log entries about the stack flapping?
If there is none, this crash is most like caused by a software bug.
02-20-2024 07:13 PM
It means the stack master crashed.
02-21-2024 07:07 PM
Thanks @Leo Laohoo for your kind advice. Is it possible caused by defective stack cable or software?
02-21-2024 07:56 PM
Hi,
Most probable the issue is software bug. How long has the stack been running and what software version is on the switches?
Thanks
02-21-2024 09:38 PM
Thanks @johnd2310 for your kind advice. we powered cycle switch01 on 1 month ago, then power cycled switch02 on the following day because of power system maintenance, there is no stack power cables between the switches. Then one later later, switch02 auto- rebooted. Stack switch ver is XE 16.9.6. , pls advise, thx.
02-21-2024 09:45 PM
sorry, typo, should be * one week later, switch02 auto-rebooted"
02-22-2024 01:58 AM
@Herman2018 wrote:
Stack switch ver is XE 16.9.6.
02-22-2024 01:56 AM
Prior to the crash, are there any log entries about the stack flapping?
If there is none, this crash is most like caused by a software bug.
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