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tspascoal
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Posts: 41
Joined: Mon Jul 06, 2020 12:08 pm

5G not enabled with CAP AC

Wed May 24, 2023 8:44 pm

Hi,

I've just installed a new CAP AC and the 5G wireless AP stopped being visible after a while (when I moved the AP around).

To be used as an AP, nothing fancy

I have not (yet) changed the default settings (except changing the country)

Looking at the Wireless Interface it shows "Detecting Radar" (not that it detected a radar but it just stays stay stuck in "Detecting Radar" (after showing "searching for frequency" for a while).

It just stays stuck in "Detecting Radar"

I've upgraded it to to 7.9.1 (from 6.48.6) no changes

The frequency is set to Auto, but If I set the frequency to
- 5180,5200,5220,5240,5520,5540 it works as expected.
- 5260,5500,5520,5260,5500,5240,5500, 5520,5540, 5620, 5640 same behavior as auto
- 5600 stuck in searching for frequency

I waited a few minutes (< 2 minutes)

What are my choices here? Should I just suck it up and select one of the frequencies that work? It would prefer auto so things would just work

If I need to select a frequency, what can I do to make sure I select the "best one" ?

running /interface/wireless/scan I get

ADDRESS CHANNEL SIG NF SNR
AP 24:5A:4C:FC:0D:5C 5180/20-Ce/ac/P(20dBm) -89 -106 17

and /interface/wireless/frequencymonitor gives me

FREQ USE NF
5180MHz 8.1% -107
5200MHz 0% -107
5220MHz 0% -107
5240MHz 0% -107
5260MHz 0% -107
5280MHz 0% -101
5300MHz 0% -107
5320MHz 0% -107
5500MHz 0% -106
5520MHz 0% -106
5540MHz 0% -106
5560MHz 0% -95
5580MHz 0% -106
5600MHz 0% -106
5620MHz 0% -91
5640MHz 0% -106
5660MHz 0% -104
5680MHz 0% -98
5700MHz 0% -106


Watched the https://www.youtube.com/watch?v=ZbrbRUAfpac video but didn't help me make a decision on my best choice.

Thank you
 
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ryba84
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Joined: Sat Feb 07, 2015 1:18 pm

Re: 5G not enabled with CAP AC

Thu May 25, 2023 10:27 am

/interface/wireless/set wlan2 skip-dfs-channels=all
 
holvoetn
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Location: Belgium

Re: 5G not enabled with CAP AC

Thu May 25, 2023 11:13 am

Auto is usually a bad option. You never know what it will take.
Plan the frequencies in use by your APs.

As indicated, make sure you choose a channel which is not subject to DFS checking.
If it hits a radar scan, depending on which channel was chosen it can take up to 10 minutes before it comes active.
So best to avoid those frequencies if you're in an area where this happens a lot.

From your frequency scan I see quite a lot of the lower frequencies are not in use.
Why not select one of those ?
 
tspascoal
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Topic Author
Posts: 41
Joined: Mon Jul 06, 2020 12:08 pm

Re: 5G not enabled with CAP AC

Mon May 29, 2023 5:36 pm

/interface/wireless/set wlan2 skip-dfs-channels=all
Thank you.

I was under the impression disabling DFS was no longer allowed, so didn't consider that option
 
tspascoal
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Posts: 41
Joined: Mon Jul 06, 2020 12:08 pm

Re: 5G not enabled with CAP AC

Mon May 29, 2023 5:40 pm

Auto is usually a bad option. You never know what it will take.
Plan the frequencies in use by your APs.

As indicated, make sure you choose a channel which is not subject to DFS checking.
If it hits a radar scan, depending on which channel was chosen it can take up to 10 minutes before it comes active.
So best to avoid those frequencies if you're in an area where this happens a lot.

From your frequency scan I see quite a lot of the lower frequencies are not in use.
Why not select one of those ?
Thank you.

I was under the impression auto was going to work better, since it would pick the best channel for me not only for today but for the future in case a channel gets too crowded.

My bad, If manual picking is a better choice, then I will go that route.
 
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mkx
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Re: 5G not enabled with CAP AC

Mon May 29, 2023 6:05 pm

/interface/wireless/set wlan2 skip-dfs-channels=all
Thank you.

I was under the impression disabling DFS was no longer allowed, so didn't consider that option

The configuration code does not disable DFS (as you noted that's not allowed). Instead the config code instructs AP to avoid using channels where DFS is required.
 
tspascoal
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Posts: 41
Joined: Mon Jul 06, 2020 12:08 pm

Re: 5G not enabled with CAP AC

Thu Jun 01, 2023 12:03 am



Thank you.

I was under the impression disabling DFS was no longer allowed, so didn't consider that option

The configuration code does not disable DFS (as you noted that's not allowed). Instead the config code instructs AP to avoid using channels where DFS is required.
Brilliant...

Thank you

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