[ASUS GT-AX11000] Trying to obtain 1.7333 Gbps/802.11ac/160MHz

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Haythem CHAKER

New Around Here
Greetings,

I am trying to obtain maximum throughput between two Ubuntu nodes; both with the 160MHz capable Intel Wireless-Ac 9260 card using an ASUS GT-AX11000 router.


Ubuntu1--2meters--AX11000--10meters--Ubuntu2
In both 5GHz-1 and 5GHz-2 band (I am using the 5GHz-1 one) I have the router configured as follows :

- Wireless Mode : Auto
- 802.11ax HE frame support : Enabled
- Channel bandwidth : 160 MHz (Ticked Enable 160MHz)
- Control Channel : 100 (Ticked Auto selectchannel including DFS channels)

https://i.imgur.com/AhoyWOz.png

In the router :
Code:
wl -i eth7 status
returns use of 160MHz channel

https://i.imgur.com/3tMi96m.png

In the nodes :
Code:
 iwconfig
returns 1.7333 Gb/s bitrate

https://i.imgur.com/UOmfc6j.png

Questions :

In the GUI Wifi site survey, this is what I get, no sign of 160MHz Bandwidth, nor 802.11ac support :

https://i.imgur.com/c0WWXyJ.png

Question 1 : Why am I not getting 160MHz or 802.11ac in the site survey ?

Question 2 : Why are the Site Survey and the wl command incoherent ?

I am using iperf to test the throughput

Usual command :
Code:
 iperf3 -c 192.168.50.118 -R -b 2000M  -u
As a result, the maximum throughput i got is around 400 Mbits/sec
Code:
    Connecting to host 192.168.50.118, port 5201
    Reverse mode, remote host 192.168.50.118 is sending
    [  4] local 192.168.50.117 port 39988 connected to 192.168.50.118 port 5201
    [ ID] Interval           Transfer     Bandwidth       Jitter    Lost/Total Datagrams
    [  4]   0.00-1.00   sec  37.8 MBytes   317 Mbits/sec  0.199 ms  1/4841 (0.021%)
    [  4]   1.00-2.00   sec  39.2 MBytes   329 Mbits/sec  0.077 ms  0/5013 (0%)
    [  4]   2.00-3.00   sec  40.9 MBytes   343 Mbits/sec  0.241 ms  1/5235 (0.019%)
    ^C
    [  4]   3.00-3.75   sec  29.5 MBytes   331 Mbits/sec  0.085 ms  0/3771 (0%)
Question 3 : How can I get maximum throughput ?

Code:
 lshw -c network
returns : https://i.imgur.com/p8WeuKe.png

Code:
 iw list
returns : https://i.imgur.com/z3gS3Qr.png

Question 4 : What is it with the Intel AC 9260 returning only 20MHz channels ?
 
Last edited:

sfx2000

Part of the Furniture
Use iw

iw list

sudo iw <interface> scan​

and so forth - better than the old iwconfig/iwlist

Other comments - with 160MHz channels, there's going to be some overlap with DFS channels, so might need some time for the radar check to complete before you get the full bandwidth...
Screenshot 2019-03-07 at 8.24.34 AM.png
 

RMerlin

Asuswrt-Merlin dev
I'm not sure if Wi-Fi Radar fully supports 802.11ax or 160-MHz channels in its report.
 

PhantomRay

Occasional Visitor
Question 1 : Why am I not getting 160MHz or 802.11ac in the site survey ?

Question 2 : Why are the Site Survey and the wl command incoherent ?

That thing feels like a addon they threw in there, and I believe it needs update. The whole thing is broken and never worked for me.

Question 3 : How can I get maximum throughput ?
You need to parallelize your iperf test to saturate your TR/RX streams. try use -P
 

RMerlin

Asuswrt-Merlin dev
With -P parallel streams i got a maximum throughput of 550 Mbits/sec .
I still want to use the full 160 MHz bandwidth and reach maximum throughput (1.7Gbps).
Link rate != throughput. The throughput takes into account the overhead introduced by encryption, frames, slots, etc...

You will never hit 1.7 Gbps of throughput over a 1.7 Gbps link.
 

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