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Ubiquiti AP rebooting with "heavy" usage

iamgigglz

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By "heavy" I mean consistent 50Mbit download...

My setup is:

50/50 Fibre CPE -> Ubiquiti USG-3P - some TP-Link switch -> POE Injector (x2) -> UAP-AC-LR (x2)

One AP is close to the switch, the other is on a 40m Cat6 cable that's about 3 months old.

Today the one that's on the long cable started rebooting randomly. I'm busy reinstalling my Steam library so it's been downloading non-stop for a few hours. If I stop the Steam download then the AP is stable.
It feels warm but I wouldn't say it's overheating. Both APs are on the latest firmware (5.43.43), memory usage is 40% and it's running on 2.4GHz only with 3 PC clients and 3 phones.

Any ideas?
 
NVM, just saw you only already only using 2.4g
 
maybe try swapping the poe injectors and see if the problem maybe shift or not.
might just be that its not getting enough power under heavy usage.
 
maybe try swapping the poe injectors and see if the problem maybe shift or not.
might just be that its not getting enough power under heavy usage.
Makes a lot of sense. I'll try it out
 
Very late to the party here and not sure if the problem is still persisting- I had a similar issue and found out the hard way that using rubbish network cable was the cause.
If the problem still exists, try replacing the cable with bare copper network cable (Linkbasic or similar) and I'm certain the issue will be resolved
 
May be
Very late to the party here and not sure if the problem is still persisting- I had a similar issue and found out the hard way that using rubbish network cable was the cause.
If the problem still exists, try replacing the cable with bare copper network cable (Linkbasic or similar) and I'm certain the issue will be resolved

I rearranged my layout to have the PoE injector on the AP end of the cable rather than the "source" end of the cable; it's been rock solid since that change. Pretty sure it's either that 40m cable or some dodgy crimping that was causing the issue.
I have a cable tester and all looks ok, but I wish I could somehow confirm the voltage that's reaching the AP under load.
 
May be


I rearranged my layout to have the PoE injector on the AP end of the cable rather than the "source" end of the cable; it's been rock solid since that change. Pretty sure it's either that 40m cable or some dodgy crimping that was causing the issue.
I have a cable tester and all looks ok, but I wish I could somehow confirm the voltage that's reaching the AP under load.

Just mentioning but the PoE dies quite easily, so if anything happens again. Maybe buy a new PoE.
 
Had similar issue with client a little while ago, they're AP was quite a bit further than 40M.
After allot of messing about, changing PoE etc it turned out to be voltage drop to the AP, had to implement a custom PoE
to push a bit higher voltage which finally sorted the issue.
 
May be


I rearranged my layout to have the PoE injector on the AP end of the cable rather than the "source" end of the cable; it's been rock solid since that change. Pretty sure it's either that 40m cable or some dodgy crimping that was causing the issue.
I have a cable tester and all looks ok, but I wish I could somehow confirm the voltage that's reaching the AP under load.
I've tried your method previously and it seems to work.... kinda defeats the purpose of PoE but hey, as long as it works then I guess its good
 

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