Does OpenWRT support wireless 20/40/80/160M bandwidth adaptation?

[tangyf20142016]

Does OpenWRT support wireless 20/40/80/160M bandwidth adaptation? How is it configured if supported?

Thank you!

[brada4]

Yes, but not via LuCI.
Radio configuration should look like:

     option country 'GB'
     option channels '100-128'
     # option channels '36-64'
     # option channels '149-177'
     option channel 'auto'
     option htmode 'HE160'

Or in general setting channel to auto/ACS enables it while fixed channel config sets center frequency which disables half of fallback not containing center frequency.

If not obvious HE160 should become VHT160 for Wifi5 generation devices.

[tangyf20142016]

My requirement is to automatically adjust bandwidth or channels according to environmental changes. I wonder if there is such a feature in OpenWRT?
Thank you!

[brada4]

Answer remains unchanged. It is supported, but not reachable via web UI.

Please connect to your OpenWrt device using ssh and copy the output of the following commands and post it here using the "Preformatted text </> " button:

Remember to redact passwords, MAC addresses and any public IP addresses you may have:

ubus call system board

[tangyf20142016]

root@OpenWrt:/# ubus call system board
{
"kernel": "5.10.138",
"hostname": "OpenWrt",
"system": "ARMv7 Processor rev 1 (v7l)",
"model":
"board_name":
"rootfs_type": "squashfs",
}

[brada4]

It appears you are using firmware that is not from the official OpenWrt project.

When using forks/offshoots/vendor-specific builds that are "based on OpenWrt", there may be many differences compared to the official versions (hosted by OpenWrt.org). Some of these customizations may fundamentally change the way that OpenWrt works. You might need help from people with specific/specialized knowledge about the firmware you are using, so it is possible that advice you get here may not be useful.

You may find that the best options are:

1. Install an official version of OpenWrt, if your device is supported (see https://firmware-selector.openwrt.org).
2. Ask for help from the maintainer(s) or user community of the specific firmware that you are using.
3. Provide the source code for the firmware so that users on this forum can understand how your firmware works (OpenWrt forum users are volunteers, so somebody might look at the code if they have time and are interested in your issue).

If you believe that this specific issue is common to generic/official OpenWrt and/or the maintainers of your build have indicated as such, please feel free to clarify.