Troubleshooting Unifi AP-AC-Lite

DustinB3403

So been trying to figure this out for a bit and I'm not sure what I'm missing.

iPerf report

iperf3 -u -c 192.168.1.226 -b 50M -R
Connecting to host 192.168.1.226, port 5201
Reverse mode, remote host 192.168.1.226 is sending
[  4] local 192.168.1.192 port 51800 connected to 192.168.1.226 port 5201
[ ID] Interval           Transfer     Bandwidth       Jitter    Lost/Total Datagrams
[  4]   0.00-1.00   sec  3.72 MBytes  31.1 Mbits/sec  7.256 ms  66/542 (12%)
[  4]   1.00-2.00   sec  4.27 MBytes  35.9 Mbits/sec  4.815 ms  227/774 (29%)
[  4]   2.00-3.00   sec  4.36 MBytes  36.5 Mbits/sec  2.627 ms  218/776 (28%)
[  4]   3.00-4.00   sec  4.43 MBytes  37.2 Mbits/sec  2.657 ms  196/763 (26%)
[  4]   4.00-5.00   sec  4.47 MBytes  37.4 Mbits/sec  4.868 ms  175/747 (23%)
[  4]   5.00-6.00   sec  3.97 MBytes  33.3 Mbits/sec  2.141 ms  221/729 (30%)
[  4]   6.00-7.00   sec  4.26 MBytes  35.7 Mbits/sec  3.256 ms  265/810 (33%)
[  4]   7.00-8.00   sec  3.42 MBytes  28.7 Mbits/sec  2.271 ms  281/719 (39%)
[  4]   8.00-9.00   sec  4.27 MBytes  35.8 Mbits/sec  6.462 ms  242/788 (31%)
[  4]   9.00-10.00  sec  4.30 MBytes  36.0 Mbits/sec  2.722 ms  233/783 (30%)
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Jitter    Lost/Total Datagrams
[  4]   0.00-10.00  sec  59.7 MBytes  50.0 Mbits/sec  1.672 ms  2166/7620 (28%)
[  4] Sent 7620 datagrams

iperf Done.

C:\Users\dusti\Downloads\iperf-3.1.3-win64>iperf3 -u -c 192.168.1.226 -b 50M
Connecting to host 192.168.1.226, port 5201
[  4] local 192.168.1.192 port 56717 connected to 192.168.1.226 port 5201
[ ID] Interval           Transfer     Bandwidth       Total Datagrams
[  4]   0.00-1.00   sec  5.53 MBytes  46.4 Mbits/sec  708
[  4]   1.00-2.00   sec  5.95 MBytes  49.9 Mbits/sec  761
[  4]   2.00-3.00   sec  5.95 MBytes  49.9 Mbits/sec  761
[  4]   3.00-4.00   sec  6.25 MBytes  52.4 Mbits/sec  800
[  4]   4.00-5.00   sec  5.88 MBytes  49.3 Mbits/sec  752
[  4]   5.00-6.01   sec  5.80 MBytes  48.4 Mbits/sec  743
[  4]   6.01-7.01   sec  5.96 MBytes  50.0 Mbits/sec  763
[  4]   7.01-8.00   sec  6.27 MBytes  52.9 Mbits/sec  803
[  4]   8.00-9.00   sec  5.89 MBytes  49.4 Mbits/sec  754
[  4]   9.00-10.01  sec  5.66 MBytes  46.9 Mbits/sec  725
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Jitter    Lost/Total Datagrams
[  4]   0.00-10.01  sec  59.1 MBytes  49.5 Mbits/sec  0.267 ms  42/7570 (0.55%)
[  4] Sent 7570 datagrams

iperf Done.

Run the below

BZ.v3.9.19# iwpriv wifi0 get_txchainmask
wifi0     get_txchainmask:3
BZ.v3.9.19# iwpriv wifi1 get_txchainmask
wifi1     get_txchainmask:3
BZ.v3.9.19# cm=1; for a in 0 1; do for b in tx rx; do iwpriv wifi$a ${b}chainmas
k $cm; done; done; killall hostapd

I am getting -55db on my 5Ghz channel

On the second channel I'm getting the same results. as just above.

Not sure why my throughput is as slow as it is, 10-12 Down and ~20 upload.

DustinB3403

Based on the iPerf report, the hardware shouldn't be defective (bottom of the page)

So what am I missing here?

dafyre

Are you testing a wireless client?

DustinB3403

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

DustinB3403

Anyone on have any ideas?

DustinB3403

I've ordered an AP to compare against.

Worse case I return it, best case I have a new AP that operates how it should.

JaredBusch

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

I've ordered an AP to compare against.

Worse case I return it, best case I have a new AP that operates how it should.

No idea how to verify anything. I would factory rest from ssh and manually change firmware a few versions if you really want to troubleshoot.
Otherwise I would do what you did. Order a new one.

DustinB3403

@jaredbusch said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

I've ordered an AP to compare against.

Worse case I return it, best case I have a new AP that operates how it should.

No idea how to verify anything. I would factory rest from ssh and manually change firmware a few versions if you really want to troubleshoot.
Otherwise I would do what you did. Order a new one.

Any recommendations on how to factory reset this one via ssh?

DustinB3403

Oh wow that's simple...

https://help.ubnt.com/hc/en-us/articles/205143490-UniFi-How-to-Reset-the-UniFi-Access-Point-to-Factory-Defaults#2

dafyre

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

Oh wow that's simple...

https://help.ubnt.com/hc/en-us/articles/205143490-UniFi-How-to-Reset-the-UniFi-Access-Point-to-Factory-Defaults#2

Did that help?

DustinB3403

@dafyre haven't tried will do tomorrow night

dbeato

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

DustinB3403

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

Laptop and a VM that is attached to the LAN on a dedicated port from my hypervisor.

dafyre

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

Laptop and a VM that is attached to the LAN on a dedicated port from my hypervisor.

Is the laptop connected at N or AC? What frequency / channel? (2.4gHz or 5gHz?)

DustinB3403

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

Laptop and a VM that is attached to the LAN on a dedicated port from my hypervisor.

Is the laptop connected at N or AC? What frequency / channel? (2.4gHz or 5gHz?)

AC and N for testing, both resulted in sub-par performance.

DustinB3403

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

Laptop and a VM that is attached to the LAN on a dedicated port from my hypervisor.

Is the laptop connected at N or AC? What frequency / channel? (2.4gHz or 5gHz?)

AC and N for testing, both resulted in sub-par performance.

20 and 80, and channels 1 and 40

dafyre

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

Laptop and a VM that is attached to the LAN on a dedicated port from my hypervisor.

Is the laptop connected at N or AC? What frequency / channel? (2.4gHz or 5gHz?)

AC and N for testing, both resulted in sub-par performance.

20 and 80, and channels 1 and 40

Use an app on your phone to see what kind of noise you have... You may need to set the channel manually for the 2.4gHz band. I've not heard of having to do that on 5gHz.

dbeato

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

Laptop and a VM that is attached to the LAN on a dedicated port from my hypervisor.

Is the laptop connected at N or AC? What frequency / channel? (2.4gHz or 5gHz?)

AC and N for testing, both resulted in sub-par performance.

20 and 80, and channels 1 and 40

I will actually set the AC channels to Auto.

dafyre

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

Laptop and a VM that is attached to the LAN on a dedicated port from my hypervisor.

Is the laptop connected at N or AC? What frequency / channel? (2.4gHz or 5gHz?)

AC and N for testing, both resulted in sub-par performance.

20 and 80, and channels 1 and 40

I will actually set the AC channels to Auto.

What about the channel width? I've seen setting them to 20 (for 2.4 gHz) and 40 (for 5gHz) improve things.

dafyre

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dbeato said in Troubleshooting Unifi AP-AC-Lite:

@dustinb3403 said in Troubleshooting Unifi AP-AC-Lite:

@dafyre said in Troubleshooting Unifi AP-AC-Lite:

Are you testing a wireless client?

Trying to troubleshoot what appears to be really slow throughput through my AP from my laptop.

Tested the ethernet and the performance is where it should be.

Are you running the tests from that laptop?

Laptop and a VM that is attached to the LAN on a dedicated port from my hypervisor.

Is the laptop connected at N or AC? What frequency / channel? (2.4gHz or 5gHz?)

AC and N for testing, both resulted in sub-par performance.

20 and 80, and channels 1 and 40

I will actually set the AC channels to Auto.

What about the channel width? I've seen setting them to 20 (for 2.4 gHz) and 40 (for 5gHz) improve things.

Edit: You really shouldn't have to worry about that unless there's a lot of interference in your area.