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.
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)
In the router :
wl -i eth7 status returns use of 160MHz channel
In the nodes :
iwconfig returns 1.7333 Gb/s bitrate
In the GUI Wifi site survey, this is what I get, no sign of 160MHz Bandwidth, nor 802.11ac support :
Question 1 : Why am I not getting 160MHz or 802.11ac in the ASUS WiFi Radar 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 ?