S8-POE temperature limits and overheating?

I have an S8-POE with a local controller resting on top. Starting this morning the switch has started randomly rebooting. I suspect it is overheating. How can I confirm if that is the issue? Has there been guidance to not stack the two devices together?

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It’s generally not recommended to stack them unless you have another form of airflow, such as an enclosed rack with fans exhausting generated heat.

If you click the icon of the switch (when it’s online and functioning), you get this view:
image
Which as you can see, has the temperature of the switch listed at the bottom.

I had mine stacked and it overheated and continently rebooted, but its working great now that its not stacked.

Stacking with the S8-PoE (or any passively cooled device, for that matter) is just not a good idea. The S8-PoE is intended as a desktop switch which is half of the reason why there is no active cooling, the other half is simply its size. There are, of course, some corner case exceptions to this rule, but those obviously don’t apply if the switch is rebooting due to heat.

Can we also get the temperature shown for AP’s in manage.alta.inc like it’s shown for the switches @Alta-Matt_v2 ?

image

This would be really nice!

I know about
for i in /sys/class/thermal/thermal_zone*/temp; do echo “Zone ${i##*/thermal_zone}: $(($(cat $i) / 1000)) C”; done
but this info in the GUI would be much easier :wink:

The reason that’s not implemented yet is right there in the one-liner, there are 4 “zones” of temperature measurement. Displaying all 4 would be cluttering. What would you like to see? Off the top of my head, I’m thinking of these potential implementations (pick one or add if I missed something):

  • Average
  • Highest
  • [Lowest]/[Highest]
  • [Average]/[Highest]

I think average is perfectly acceptable. It gives you a reasonable idea of what is going on.

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Average is perfectly fine and if I wanted to know in more detail (zones) I would be willing to dive into SSH.

I you really want to get slick, make the color of the number a sliding scale. Green for “totally fine”, yellow for “getting hot”, red for “bruh, get it out of the sun”.

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Yesss - nice one @rutman286 :+1:

I like it, but “bruh” doesn’t translate into all languages :rofl: :rofl:
Well, you guys just make it easy, now I can just copy the URL of this thread and paste it into the ticket.

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That’s fair enough. It’s been a long week already and it’s only Tuesday. Just trying to lighten the mood a bit.

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It’s only TUESDAY?!?!?!

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I had issues with a rebooting POE8
It wasn’t stacked on top anything but all ports were full.

I worked with support and we concluded it was rebooting due to heat and they told me the limit was 50c

They told me it’s a desktop product but this unit was in my garage and it’s not hard for a computer to reach 50c. I think they need to rethink the design to attach a larger heatsink or even include a tiny fan.