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

[Haythem CHAKER]

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 :

wl -i eth7 status

returns use of 160MHz channel

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

In the nodes :

 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 :

 iperf3 -c 192.168.50.118 -R -b 2000M  -u

As a result, the maximum throughput i got is around 400 Mbits/sec

    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 ?

 lshw -c network

returns : https://i.imgur.com/p8WeuKe.png

 iw list

returns : https://i.imgur.com/z3gS3Qr.png

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

 

[sfx2000]

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...

 

[RMerlin]

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

 

[PhantomRay]

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

 

[Haythem CHAKER]

You need to parallelize your iperf test to saturate your TR/RX streams. try use -P

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).

 

[RMerlin]

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.