Wi-Fi channel auto-selection

[zagi-tng]

@shm0

option channels '1 5 9 13'

With this setup i see that channels 1,9 and 13 are used.
APs seem to 'skip' 5 ?!?

[zagi-tng]

How can i set 'acs_num_scans=10' via UCI ?

[Bill]

I just spent an hour reading @shm0 post 8 w/link and have concluded that the answer to your question is you don't configure this via any uci command.

the parameter and value you question; are meant to be carefully adjusted in the /var/run/hostapd-phy1.conf file of supporting acs devices on older OpenWrt builds.

I can not say confidently that all this has be deprecated by newer algorithms, yet the thread you necroed is quite old and the person you've quoted has been recently active.

[zagi-tng]

Problem that i have is that even if i set "channels '1 5 9 13' most of APs in that area seem to "avoid" channel 5 and use either 1 , 9 or 13.
Also it's not that some would use 1 and some 13, but it seems that the majority "decides" to use 9 or 13...

and there you are looking at chann 5 and it's empty. And you see some 10+ aps using chan 9....

What could cause this ? Should i make wifi reload once a day or .... ?

[zagi-tng]

Adding

uci add_list wireless.radio1.hostapd_options='acs_num_scans=50'
uci add_list wireless.radio0.hostapd_options='acs_num_scans=50'

does not help

nor adding to radio1 (2.4)

acs_chan_bias=5:0.5

When my only selection in chanlist is 5, then it works.

Tried on OpenWrt 21.02 ... 22.03.4
MikroTiks or TPlink EAP225

[zagi-tng]

Anything, but 5

Any clues?

wireless.radio1.channel='auto'
wireless.radio1.channels='5 13 9 1'
wireless.radio1.hostapd_options='vendor_elements=DD080050F21101000000' 'acs_num_scans=25'