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Topic # 189603 5-Jan-2016 21:21
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I recently tried to upgrade my Ubiquiti wireless access point for my home office - from wireless n to wireless ac.  Not a success. undecided

My LAN setup:

HFC cable 100/10 Mbps connection, Cisco modem, Ubiquiti Edge router, Cisco smart switch, Cat6 cables, Ubiquiti WAP located in the centre of our single-storey house. Two (Win 10) laptops running wireless n, plus one running wireless ac.

The old Ubiquiti UniFi AP (802.11n):

Works well and runs cool: with downstream speeds up to 80 Mbps, always above 40 Mbps, does not overheat or become intermittent.

To "upgrade" I swapped out the WAP and power injector, using similar settings on the Ubiquiti management software. No other changes.

The new Ubiquiti UniFi UAP-AC (802.11ac):

When cold - the new WAP reaches full line speed (100Mbps) with no drop-outs - BUT after about an hour it runs hot - with slow connection speeds (below 40Mbps, often below 10 Mbps, sometimes immeasurable with OOKLA or nPerf (freezes).

InSSider shows frequent drop-outs (every few seconds) on both the 2.4 GHz and 5GHz bands when the new WAP runs hot.

There are no overlapping WiFi channels. Turning off wireless phones does not help.

Suggestions please - should I return the new WAP?  Or am i missing something obvious?

It's frustrating that a WAP costing three times as much as the old one runs at less than half the speed and is less reliable.  frown




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  Reply # 1461987 5-Jan-2016 22:04
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Check which generation of the AC you have, I had the old first gen ones and they ran hot. Never had performance issues like that, but I did have to use their injector because although it would negotiate with my switch and get power, it was not enough for it. Try putting the injector closer to the AP, as when I was runnign them I had the injector in the bedroom the AP was in since I needed a switch there to put other stuff on wired too since they were giving grief over wifi.

If you are able to return it I would as the new AP-PRO is almost available according to they tweet from snappernet last year when I asked and it is a current gen AC device, not really old first gen stuff.




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  Reply # 1461995 5-Jan-2016 22:07
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How "hot" does it get? If it is mega hot I would just assume faulty hardware. 

I haven't used one of the new AC ones yet but the old UAP's always ran "warm" but I wouldn't say hot. 

Have you spoken to Go Wireless?... assuming that's where you got it. They are very helpful and may have an idea of what's going on.

 
 
 
 


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  Reply # 1462000 5-Jan-2016 22:11
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Mine was just leaning against a wall pointing out towards the other bedrooms, the back of it would be hot enough that you could touch it but wouldnt want to for an extended time. That was the plastic case so I hate to think how hot the insides were. Never saw the dropping out issues.

Sold them on trademe as soon as the new ones were announced for what I could get for them. I suspect they will disown them firmware wise soon too.




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  Reply # 1462078 6-Jan-2016 05:21
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What software version are you running?

The first series UAP AC were horrible for a long time, even with newer software they still aren't great. The new UAP AC's should be in the country any day and are far better for a lot less money.




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  Reply # 1462221 6-Jan-2016 11:42
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sbiddle: What software version are you running?

The first series UAP AC were horrible for a long time, even with newer software they still aren't great. The new UAP AC's should be in the country any day and are far better for a lot less money.



Thank you all for your advice.  smile

Model: UniFi AP-AC v2
Version: 3.2.12.2920
UniFi Controller v.4.7.6

Are these the new models? :

Ubiquiti UniFi AC Long Range
Ubiquiti UniFi AC Lite

If not, what models should I be looking for?




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  Reply # 1462231 6-Jan-2016 11:55
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And this one which is not here yet and will be in high demand when it is.

https://nicegear.co.nz/wireless-equipment/ubiquiti-unifi-ac-pro-ap/

Seems feburary is the best estimate for that one. I wnat it because it uses standard POE not the passive 24v nonsense so will power off a switch with no adapter etc.

They will all be available in a 5 pack without the power injectors finally too.






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  Reply # 1462321 6-Jan-2016 13:46
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From what I've read 4.8.x has made things a lot better for earlier AC AP's, but I don't think they'll support band steering even with the new software and are pretty much an obsolete product.

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  Reply # 1462402 6-Jan-2016 15:19
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Is the PoE spec the same between units?



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  Reply # 1462457 6-Jan-2016 15:53
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MadEngineer: Is the PoE spec the same between units?


The UAP-AC-LITE and UAP-AC-LR use 24V Passive PoE. (they are supplied with a 24V power injector)

The UAP-AC-PRO is 802.3af-powered - no power injector required.

Model comparison chart




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  Reply # 1462475 6-Jan-2016 16:27
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ah and you said you swapped out the poe injector anyway (mobile device reading fail)

Tried contacting your vendor?



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  Reply # 1462508 6-Jan-2016 17:19
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MadEngineer: ah and you said you swapped out the poe injector anyway (mobile device reading fail)

Tried contacting your vendor?


The old UniFi AP uses a 24V injector.
The new UniFi AP-AC v2 uses a 48V injector.
Swapping injectors was mandatory.
Both injectors seem to be working well - they run cool with no loss of power at any time.

Could an intermittent fault in an injector cause poor/intermittent signal strength and speeds?

My vendor is on holiday smile
I'll try contacting them tomorrow.




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  Reply # 1462514 6-Jan-2016 17:39
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When I was powering off my switch it was very erratic. Wouldnt show as uptime dropping to 0 in the software but it was like it was rebooting, I suspect just the wireless interface was rebooting and not the CPU.

I was told that the design of the old AC's is that its more like a computer where the wireless chip is separate from the CPU chip, unlike all the other gear that is an integrated solution. I never opened one up to see what the chips in it were however.




Richard rich.ms



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  Reply # 1468491 12-Jan-2016 15:08
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Footnote

I returned the (presumably)  faulty Ubiquiti UniFi UAP-AC to the vendor (PB Tech) two months after purchase.

To their credit they exchanged it without question for other Ubiquiti gear of equal value - a three-pack of UniFi AP Long Range (which work well).

Happy camper  smile

Thank you PB Tech !




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  Reply # 1468495 12-Jan-2016 15:16
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Good result.

I'm hanging out for the UAP AC Pro's to arrive in the country!

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  Reply # 1468672 12-Jan-2016 20:24
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JamesL: Good result.

I'm hanging out for the UAP AC Pro's to arrive in the country!


Yeh been hanging out for these ones too Jimmy. I got a UAP just the standard. Nothing flash, all my main devices like pc/roku/apple tv are running of a lan cable most of the time. So 802.11n is enough for me with my internet being 20mbit and all. But when UFB is available ill jump on AC gear. 

I was hoping sideface wasn't talking about those two new UAP-AC's that were faulty, but it appears he is talking about the big square one of which we have 3 in our office, and the zero handoff doesn't work, and we have had issues where the units were dropping occasionally you see a flashing white square ring on it instead of solid blue, for $500 bux those are average at best. The new ones are supposedly quite a bit cheaper heres hoping.

Go Wireless have also bought out an 802.11n access point in a network jack. 







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