Primus Posted December 4, 2019 Posted December 4, 2019 Have you gone through their support process beginning with chat and escalating or posted on their forums. If this was a widespread problem I'm sure their forums would be full of similar posts etc.
howartp Posted December 4, 2019 Posted December 4, 2019 I was about to say, the support on their forums has been great when I’ve needed it.
MatthewL Posted December 4, 2019 Posted December 4, 2019 Have version controller are you running and where is it hosted? I've just rebuilt mine onto a Pi, if you have one spare one or can setup a new server and get a few AP's connected to that and see if it makes a difference.
SystemsAd Posted December 6, 2019 Posted December 6, 2019 (edited) 5.12.35 for me... on a Windows Server 2016 VM. Edited December 6, 2019 by SystemsAd
MatthewL Posted December 7, 2019 Posted December 7, 2019 Have you thought about changing the inform address to an IP address and see if its more stable that way?
evasion Posted December 12, 2019 Posted December 12, 2019 Moved all Nano HDs from cloud controller to software controller installed on MS server 2019. Two days no disconnections. However today one reported disconnected, responding to ping. SSH info command did not produce any output. Did a reset (set-default) and controller had "adoption error". SSH into the AP and it said: Status not adopted (http://unifi:8080/inform) ?? I could ping unifi controller from SSH and yet it could not resolve it for adoption??? Set inform to the ip address and it then became available for adoption in controller. Upgraded firmware to latest one... I like post from SystemsAD "We have 5 AC-Pro, they never drop off at all"...
Simcfc73 Posted December 12, 2019 Posted December 12, 2019 I have a similar situation. I actually bought a UNIFI switch to see if it would make any difference and it was rock solid for 5 days.. till today one reported as disconnected. (can still ping and connect) I rebooted the port and it came back. Haven t had chance to look further into it yet.
evasion Posted December 13, 2019 Posted December 13, 2019 4 disconnected Nano HDs found today. Rebooted and re-adopted, upgraded to latest firmware. Even on new controller.
mavhc Posted December 13, 2019 Posted December 13, 2019 How have Unifi not been able to solve this in over a year?
Primus Posted December 13, 2019 Posted December 13, 2019 It doesn't sound like they've contacted support and escalated it through engineering so a bit difficult to blame Ubiquiti. I also haven't heard of this happening in a widespread manner so once again, hard to blame Ubiquiti.
evasion Posted December 17, 2019 Posted December 17, 2019 Ubiquiti is on the case. It is clear that Nano HD is not as stable as AC Pro model, reading through this post.
evasion Posted January 9, 2020 Posted January 9, 2020 No disconnections over 17 days during Christmas break. Because the site was closed wifi was not used. So, into the first week, 2 Unifi Nano HD already disconnected. They must not like being used then? Reading though posts on Unifi forums, lots of this type of disconnecting issue. Some have tried static IP addresses only to realise it did not help after couple of days, some said overheating and poor ventilation caused lock-ups. Lets' be clear about this. When they lock-up they stop responding and lose connectivity with controller, some still reply to ping and can be reset via SSH but most do not respond to pings any more. There must be a root cause of this equipment failing in this way. So far we tried to isolate power supply as potential issue but they were disconnecting even when powered via Unifi injector. Latest firmware also did not help. Moving to software controller instead of cloud controller did not help. Would Unifi switch make them more stable? If so how and how different Unifi switch is to Cisco SG300-28PP that never had issue with Aruba APs in previous setup. They sit in dedicated wifi vlan, switch ports are set accordingly and they have dhcp with dedicated scope on 2012R2 server. Infrastructure checked many times for any issues, it's just that couple of Unifi AC Pro models have been more stable than Nano HDs. When they lock up, syslog server shows lots of "Kernel errors", so its really back to their design. If their hardware is pushed to the limits by clients and controller demands, lack of processing power will cause lock-ups.
Primus Posted January 9, 2020 Posted January 9, 2020 Since it seems to be when they're being pushed is your switch able to supply the max power drawer they quote for the Nano HDs? Given the price of Unifi switching it has to be worth trying doesn't it? They're so cheap!
evasion Posted January 9, 2020 Posted January 9, 2020 (edited) Since it seems to be when they're being pushed is your switch able to supply the max power drawer they quote for the Nano HDs? Given the price of Unifi switching it has to be worth trying doesn't it? They're so cheap! Cisco switch is on "class limit" and High priority level POE setting and there is spare power in the switch (nominal power 180W, consumed power 84W, available 96W). Typically I see poe port max power allocation 30000 mW and actual consumption approx 6600 mW. Anyway when APs lock up even on dedicated Unifi injector, power supply issue is ruled out. Btw according to spec sheet, max power for Nano HD is 10.5W (44-57 VDC). More than enough power in Cisco switch. Edited January 9, 2020 by evasion
Primus Posted January 9, 2020 Posted January 9, 2020 Ok how are they mounted? Is it possible they could be overheating?
evasion Posted January 9, 2020 Posted January 9, 2020 Ok how are they mounted? Is it possible they could be overheating? All ceiling mounted, enough airflow.
evasion Posted January 10, 2020 Posted January 10, 2020 yes, they suggest upgrading firmware, which did not help.
Primus Posted January 10, 2020 Posted January 10, 2020 So did you go back to them and say it didn't help so they could escalate it further?
evasion Posted January 10, 2020 Posted January 10, 2020 So did you go back to them and say it didn't help so they could escalate it further? Will leave that to our supplier, they have opened the case, I have opened the case in September and have given up (combination of slow response and suggestions I already tried that did not work). In the meantime I have added option 43 in DHCP to help with controller discovery function. For example two APs that appeared disconnected, one was pingable so I opened SSH sessions and "info" command returned nothing. Controller host name was resolving properly, ping came with replies. So I had to reset the AP to defaults, then give it set inform command because it could not be adopted due to "inform error". One would think that controller host name in dns would help, but it did not. If discovery function did not work, it should now thanks to option 43. Will wait and see.
Primus Posted January 10, 2020 Posted January 10, 2020 Will leave that to our supplier, they have opened the case, I have opened the case in September and have given up (combination of slow response and suggestions I already tried that did not work). In the meantime I have added option 43 in DHCP to help with controller discovery function. For example two APs that appeared disconnected, one was pingable so I opened SSH sessions and "info" command returned nothing. Controller host name was resolving properly, ping came with replies. So I had to reset the AP to defaults, then give it set inform command because it could not be adopted due to "inform error". One would think that controller host name in dns would help, but it did not. If discovery function did not work, it should now thanks to option 43. Will wait and see. That's up to you but if you're going to rely on someone else then they're probably not going to chase as often or enthusiastically as you are.
mavhc Posted January 10, 2020 Posted January 10, 2020 Those nano hd 5 packs were my great hope for better priced wifi, but if it's now into month 13 of them not fixing the problem I guess that's why they were selling them off so cheap
PotNoodleTech Posted January 13, 2020 Posted January 13, 2020 Those nano hd 5 packs were my great hope for better priced wifi, but if it's now into month 13 of them not fixing the problem I guess that's why they were selling them off so cheap It's an interesting one isn't it - the price was "too good to be true" as it had all the features of the much higher end price APs, but without the high price!
robyholmes Posted January 13, 2020 Posted January 13, 2020 Just adding that I've had one ap of our 13 Nano HDs disconnect since September. Otherwise they seem to be fine. Can any of yours disconnect or just certain ones? Have you tried a newer one or moving them around?
mdrabble Posted January 14, 2020 Posted January 14, 2020 (edited) . One would think that controller host name in dns would help, but it did not When you say you have the controller host name in DNS for the Inform - what hostname are you using? I have 2 DNS enteries for mine both resolving to the same IP address. Unifi-Controller for the host name - for the web interface I also have unifi used for inform resolution. Only options I have in DHCP for the APs are 03 - Router, 06 - DNS server and 15 - DNS Domain Name Edited January 14, 2020 by mdrabble
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