C9300 stack 2 of 3 sometimes freeze and need unplug power

[Ethan and Mia]

Hi I facing big issue

I have c9300 stack

Switch 1 <master active

Switch 2 <Member active

Switch 3 <Member active

2 times Switch2 and Switch3 freezing , After unplug and reboot they back to normal , How to start to troubleshooting

They are Core-Network Switch  , Provide command plz

thanks

[Kasun Bandara]

its better to upgrade OS to latest stable release.

[balaji.bandi]

have you collected any logs when this occuring.

if the IOS XE 16.X please upgrade to IOS XE 17.3.5 and test again.

[Leo Laohoo]

Post the complete output to the following commands: 

• sh version
• sh platform software resources
• sh platform software status con brief
• dir flash:
• dir flash:core
• dir crashinfo:

[andrew.butterworth]

I had a similar issue recently and it turned out to be a faulty stacking cable.  It was a weird fault - all L3 functionality stopped, however L2 continued to work.  With 17.3x you can see enhanced details about the stack-port state with the command 'show switch stack-ports detail'.  In my case there were errors on one side of an interface that were incrementing.  The stack would work fine for a period of up to a couple of days and then get in this weird L2 works, L3 doesn't state, the only fix was a reboot.  Replaced the stack cable where the errors were and rebooted and its been fine since.