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nic.wise

248 posts

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#289530 11-Sep-2021 10:47
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Hi. Needing some advice :)

 

My setup:

 

I have a UBNT Dreammachine, and a FlexAP, with a 8 and 5 port GB hubs (also UBNT) connecting them all up. Got another FlexAP on order to see if that'll help. Both/all are setup with 2.4ghz (HT20) and 5ghz (VHT80). FlexAP is on channels 11/36 and the UDM is on 6/42

 

Location-wise, the DM is in the lounge (large open room, it's up fairly high, about head level). Bedroom is about 10m away thru 3 to 4 walls, one of which also has our incoming power and fuse board, so I'd assume more interference cos copper and electrons. All walls are gib/wood/batts, no brick, bad mid-90s construction. Think a large square (lounge), and a smaller rectangle (bedroom+hall), in an L shape. We are in a sparsely populated area, I can see 1 or maybe 2 other WIFI access points from here, depending where on the property I am. So vey low noise. No microwave either :)

 

The FlexAP is in the bedroom right now (about 2m from the bed). Normally it's in the studio, which is a free-standing building about 30m away, thru some VERY thin trees. The studio is wired to the house with ethernet (has servers/nas etc).

 

Device-wise, there are usually 2 Mac laptops (current editions, or close to it), 2 iPads (getting older - 5th/6th gen?) and 2 iPhone 12's. On top of that, a smattering of IOT devices - shelly relays, one single SONOF switch, a few wemo and tplink switches. And a printer.

 

The user gear is on one SSID, the IOT stuff is on it's own, tho they are otherwise setup the same. One big network segment.

 

Internet is GB Fibre from Voyager. I can speedtest (command line, ethernet, from a linux box) at close on full rate. We had 100/100 from BigPipe until the start of this month.

 

The problem:

 

While I can speedtest (to voyager's server - speedtest -s 18822) from a wired machine at full rate (or as close as I care about - 850-900/400-450), I can't get over 350/350 over wifi, from any device. The Macs do best at about that, but phone/ipad top out at about 30/20 in the bedroom when the FlexAP is in the studio, and around 130/130 when it's around 2m away in the same room, and the AP says it's connected at 800Mbps

 

The ping times are all over the place, too. I ran 3 at the same time for a bit: one from the mac -> 8.8.8.8, one from the mac -> UDM and one from the linux box -> 8.8.8.8.

 

The linux box->8.8.8.8 was constant at 25ms. The mac->8.8.8.8 and the Mac->udm were pretty constant (around 26ms, and 2ms to the UDM) but from time to time I'd get it jump to 200-300ms for 2-3 pings, then back down. I was around 3m from the AP at that point, thru clear air. That happened maybe every 30-45 seconds. eg:

 

 

64 bytes from 192.168.1.1: icmp_seq=13 ttl=64 time=1.237 ms
64 bytes from 192.168.1.1: icmp_seq=14 ttl=64 time=1.141 ms
64 bytes from 192.168.1.1: icmp_seq=15 ttl=64 time=1.410 ms
64 bytes from 192.168.1.1: icmp_seq=16 ttl=64 time=1.498 ms
64 bytes from 192.168.1.1: icmp_seq=17 ttl=64 time=1.673 ms
64 bytes from 192.168.1.1: icmp_seq=18 ttl=64 time=36.281 ms
64 bytes from 192.168.1.1: icmp_seq=19 ttl=64 time=82.860 ms
64 bytes from 192.168.1.1: icmp_seq=20 ttl=64 time=130.165 ms
64 bytes from 192.168.1.1: icmp_seq=21 ttl=64 time=174.821 ms
64 bytes from 192.168.1.1: icmp_seq=22 ttl=64 time=220.768 ms
64 bytes from 192.168.1.1: icmp_seq=23 ttl=64 time=1.421 ms
64 bytes from 192.168.1.1: icmp_seq=24 ttl=64 time=1.527 ms
64 bytes from 192.168.1.1: icmp_seq=25 ttl=64 time=1.603 ms
64 bytes from 192.168.1.1: icmp_seq=26 ttl=64 time=2.631 ms
64 bytes from 192.168.1.1: icmp_seq=27 ttl=64 time=1.177 ms

 

 

 

speedtest -s 18822

 

   Speedtest by Ookla

 

     Server: Voyager Internet - Auckland (id = 18822)
        ISP: Voyager Internet
    Latency:     3.47 ms   (0.67 ms jitter)
   Download:   342.23 Mbps (data used: 300.4 MB)
     Upload:   482.78 Mbps (data used: 597.2 MB)
Packet Loss:     0.0%
 Result URL: https://www.speedtest.net/result/c/0bbcd246-3224-4367-859b-00ceb42bdf80

 

 

 

 

Most of this became noticeable when we moved to voyager, tho I dont think they are anything to do with it. I think it was more that I had >100Mbps available, and I was checking it more.

 

The Mac I'm on (current gen 16") says it's on at 1300Mbps tx rate, 80Mhz 5Ghz channel. But still it can't get more than 350, which is rather close to the max limit for the UDM/FlexAP when its on 2.4g. Unlikely related, but weird none the less.

 

I know I'm not going to be able to push 1.3Gbps anywhere, ever. But 350 seams a bit low, and 130 from a device which is right next to the AP seams.... broken. Esp when nothing else is doing much except background usage.

 

 

 

Anyone got any ideas? Outside of "you should have got other WIFI gear".

 

 

 

 

 

 

 

 





Nic Wise - fastchicken.co.nz


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kyhwana2
2539 posts

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  #2776322 11-Sep-2021 11:07
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Ignore the "connected at" rates, they don't really mean anything.

 

350/350mbit on wifi is pretty good. Have you checked what other networks are around you and what channels they're on? Make sure your 5ghz networks aren't on (or overlapping) channels that your neighbours are using..

 

Also what wifi standard are all your devices using? How many MIMO antennas?

 

https://arstechnica.com/gadgets/2018/11/802-eleventy-which-802-11ax-and-802-11ay-explained/


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cyril7
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  #2776412 11-Sep-2021 15:48
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Hi, the speeds you are seeing are totally normal for the gear you have. If you wife is pushing large graphic files around, then organise a wired connection, while she is moving large files the wireless spectrum which is a shared resource is being hogged by her usage, so get a dedicated wired link and leave the wifi for doing the every day stuff.

 

I can already hear you say, but I cannot do wired for this and that and it will require a cable to be run and thats not convienient, yet you were happy to shell out dosh on more wireless gear that probably wont make a diff. Spend the money on a wired connection and take advantage of it.

 

Cyril 

 

Edit, if you want to use 80MHz then you need to use channels 42 and 58, if the AP wont let you select those channels then it should let you select one adjacent and it will occupy the 42 and 58 allocations, these are the correct channels to use for 80MHz.


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