Force mode 802.11 for station using wpa_supplicant

Ben Greear greearb
Thu Jul 10 07:27:42 PDT 2014

On 07/08/2014 01:52 AM, Vu Hai NGUYEN wrote:
>> Hi all,
>> I wonder if we can use wpa_supplicant to force mode 802.11 for a station when it connects to an AP.
>> For example my AP using hostapd and was set up in 802.11ac VHT80, channel 36.
>> Normally all the device support 802.11n can connect to that AP too.
>> But because the wifi module in my station is the same as my AP and they are all support 802.11ac so
>> if I set up the channel 36 for my station it connect automatically with my AP in mode 802.11ac VHT80.
>> Is there any way that I can force my station to connect to my AP in mode 802.11n HT20 or HT40?
>> I don't see any parameter in the configuration file of wpa_supplicant that allow me to do this.
> If I set the parameter "disable_vht=1" in the configuration file of wpa_supplicant, my station can connect in
> mode 802.11nHT40  with my AP (set up in 802.11ac VHT80).
> Then I add "disable_ht40=1", but my Station still connects to my AP in mode 802.11n HT40 (I verify this
> by checking bandwidth and rate report from command "iw").
> I added "disabled_ht20" but this did not create any effect too. Any one gets the same issue like me?
> Here is an example of my configuration file for wpa_supp:

Try listing a set of rates that are acceptable, and only put in 802.11b rates?


> ctrl_interface=/var/run/wpa_supplicant
> eapol_version=1
> ap_scan=1
> fast_reauth=0
> network={
> 	ssid="ath10k"
> 	disable_ht=1
> 	disable_vht=1
> 	scan_freq=5220
> 	pairwise=CCMP
> 	group=TKIP CCMP
> 	auth_alg=OPEN
> 	psk="password"
> }
> Thanks,
> Acita-Sodielec
> Route de Mayres - B.P. 9
> _______________________________________________
> HostAP mailing list
> HostAP at

Ben Greear <greearb at>
Candela Technologies Inc

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