Switch rebooting daily

[JonathanW]

I have 2 x460-g2 and 2 x440-48p stacked at my high school. Everyday for the past month or so they reboot around 10am-noon. I do not know what causes this, but it's becoming a headache especially getting closer to testing time. Can anyone help me with this? Thanks

[slewfoot2xm]

Or pull stacking cable for a minute and see if it still logs media errors on the cable.

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Looks like there is one of the stacking cables faulty or one of the stack ports. Stacking problems can result in a reboot. Can you replace the cable? -posted to the "ExtremeSwitching (EXOS)" community

ExtremeSwitching (EXOS)

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Re: Switch rebooting daily

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Oct 12, 2021 11:37 AM Stefan K.

Looks like there is one of the stacking cables faulty or one of the stack ports. Stacking problems can result in a reboot. Can you replace the cable?

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[rod_barton]

For your stacking setup are you using daisy chain or ring method to stack the switches?​

[JonathanW]

I have 4 switches. stacking ports go 1:1 to 2:2, 2:1 to 3:2, 3:1 to 4:2, then 4:1 to 1:2

[rod_barton]

Hi, you could try, as a test, removing the cable between 4:1 to 1:2 and see if this stops the log entries and the reboots.  The switches will be in daisy-chain mode from when you remove the cable which is not ideal, but may help in alleviating the reboot issue.

[JonathanW]

Switches rebooted again today without 4:1 to 1:2 hooked up. I'm thinking maybe the firmware needs updated?