Channel unknow?

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kosmos
DD-WRT Novice


Joined: 31 Jan 2013
Posts: 29

PostPosted: Sun Oct 03, 2021 20:46    Post subject: Channel unknow? Reply with quote
For me, no device connects to the 5 GHz network of the WRT3200. Unknown channel is displayed in the status. Has someone had that before? Do I have to switch the expansion channel from ll to uu, had read times that it is inverted with BCM or has it already been fixed.

I changed the channel because some channels have apparently been deactivated since the last update of the Raspberry PI4.

Code:
pi@home: iw phy phy0 channels

Band 2:
   * 5170 MHz [34] (disabled)
   * 5180 MHz [36]
     Maximum TX power: 17.0 dBm
     Channel widths: 20MHz HT40+ VHT80
   * 5190 MHz [38] (disabled)
   * 5200 MHz [40]
     Maximum TX power: 17.0 dBm
     Channel widths: 20MHz HT40- VHT80
   * 5210 MHz [42] (disabled)
   * 5220 MHz [44]
     Maximum TX power: 17.0 dBm
     Channel widths: 20MHz HT40+ VHT80
   * 5230 MHz [46] (disabled)
   * 5240 MHz [48]
     Maximum TX power: 17.0 dBm
     Channel widths: 20MHz HT40- VHT80
   * 5260 MHz [52] (disabled)
   * 5280 MHz [56] (disabled)
   * 5300 MHz [60] (disabled)
   * 5320 MHz [64] (disabled)
   * 5500 MHz [100] (disabled)
   * 5520 MHz [104] (disabled)
   * 5540 MHz [108] (disabled)
   * 5560 MHz [112] (disabled)
   * 5580 MHz [116] (disabled)
   * 5600 MHz [120] (disabled)
   * 5620 MHz [124] (disabled)
   * 5640 MHz [128] (disabled)
   * 5660 MHz [132] (disabled)
   * 5680 MHz [136] (disabled)
   * 5700 MHz [140] (disabled)
   * 5720 MHz [144] (disabled)
   * 5745 MHz [149]
     Maximum TX power: 20.0 dBm
     Channel widths: 20MHz HT40+ VHT80
   * 5765 MHz [153]
     Maximum TX power: 20.0 dBm
     Channel widths: 20MHz HT40- VHT80
   * 5785 MHz [157]
     Maximum TX power: 20.0 dBm
     Channel widths: 20MHz HT40+ VHT80
   * 5805 MHz [161]
     Maximum TX power: 20.0 dBm
     Channel widths: 20MHz HT40- VHT80
   * 5825 MHz [165]
     Maximum TX power: 20.0 dBm
     Channel widths: 20MHz
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kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 12497
Location: Texas, USA

PostPosted: Sun Oct 03, 2021 21:08    Post subject: Reply with quote
Disable "Allow Channel Overlapping", for one. You can't use LL on channel 36, perhaps, for two.
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ho1Aetoo
DD-WRT Guru


Joined: 19 Feb 2019
Posts: 1270
Location: Germany

PostPosted: Wed Oct 06, 2021 8:28    Post subject: Reply with quote
kosmos wrote:
Quote:
Wireless Interface 5GHz-Wireless Mode AP-Wireless Network Mode-AC, Width VHT 80 Mhz-Wireless Channel-36


ll-6 ul-2 lu+2 uu+6?


https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1247526#1247526

@kosmos

you should listen to what experienced dd-wrt users tell you and not ask the same question twice



ho1Aetoo wrote:
the option should definitely not be activated, it is for experts who are definitely familiar with the frequencies and channels.

the option allows invalid channel configurations that are not supported by most clients.


https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1245533#1245533

ho1Aetoo wrote:
(if channel overlapping is disabled)
there is actually no selection, there is only one correct extension channel per WLAN channel



https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1245646#1245646

configure your router correctly then the question about wrong channel configurations is unnecessary

furthermore see:

https://wiki.dd-wrt.com/wiki/index.php/QCA_wireless_settings#Extension_Channel
kosmos
DD-WRT Novice


Joined: 31 Jan 2013
Posts: 29

PostPosted: Wed Oct 06, 2021 11:10    Post subject: Reply with quote
Allowing channel overlap does not matter to me whether activated or deactivated I can select all extension channels LL, LU, UL and UU, so I wanted to know what the standard is so that I can set it that way.
ho1Aetoo
DD-WRT Guru


Joined: 19 Feb 2019
Posts: 1270
Location: Germany

PostPosted: Wed Oct 06, 2021 11:20    Post subject: Reply with quote
https://forum.dd-wrt.com/phpBB2/files/peek_2021_09_12_10_25_556.gif


The point is if you disable allow channel overlapping you don't have to select any extension channels at all
or does it work differently for you than in the video shown?

In addition, I have already linked you everything worth knowing about it

In the link are all valid channel configurations

https://wiki.dd-wrt.com/wiki/index.php/QCA_wireless_settings#Extension_Channel
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 12497
Location: Texas, USA

PostPosted: Wed Oct 06, 2021 18:13    Post subject: Reply with quote
It really does not matter what you can select (for extension channels). It doesn't matter if you configure your wireless in the right order. What matters is you are purposely ignoring the fact that for a selected channel (36), there is only one option for extension channel (UU) for 80MHz channel width.
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zakaron
DD-WRT User


Joined: 03 Jun 2016
Posts: 91

PostPosted: Thu Oct 07, 2021 23:47    Post subject: Reply with quote
I have the issue where the channel reads unknown on the 5GHz radio if I select the option on for "single user beamforming". If I unselect it, I get a proper channel displayed. I have the 1200AC though and it is on an older release, 43443. It has been an issue for me form a couple years, but at least I know what causes it (for me anyway). I would check that option though under the Wireless tab --> Basic settings subtab --> then click the advanced options on the 5GHz radio.
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 12497
Location: Texas, USA

PostPosted: Fri Oct 08, 2021 1:11    Post subject: Reply with quote
Thanks for that input. I would have to double-check and do some research, but I don't think Marvell even supports beamforming in DD-WRT, whatsoever? Can someone offer up some clarification here?
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