Invisible 5GHz SSID

Long ago (ROS 7.6) I set up my hAP ax^3 for “dual” WiFi with a shared SSID for both 2 and 5 GHz radios. It worked splendidly. At some point that changed, although I can’t say precisely when. Only recently I logged in to find zero 5GHz client connections when before I had at least a couple.

In the interest of troubleshooting this I split the networks onto different SSIDs. (not a big deal b/c no connections were active) None of my client devices can see it. Probably goes a long way to explaining why they’re not connecting.

What do I need to do to troubleshoot this? Here’s where I’m at right now…

/interfaces/wifi/print detail

 0 M BR ;;; 5GHz
        default-name="wifi1" name="wifi1" l2mtu=1560 mac-address=48:A9:8A:4A:B4:AD arp-timeout=auto radio-mac=48:A9:8A:4A:B4:AD 
        configuration.mode=ap .ssid="Test5G" .country=United States 
        security.authentication-types=wpa2-psk,wpa3-psk .passphrase="Test5GTest5G" 
        channel.band=5ghz-ax .width=20/40/80mhz .skip-dfs-channels=10min-cac 

/interface/wifi/radio/print detail 

 0 L radio-mac=48:A9:8A:4A:B4:AD tx-chains=0,1 rx-chains=0,1 bands=5ghz-a:20mhz,5ghz-n:20mhz,20/40mhz,5ghz-ac:20mhz,20/40mhz,20/40/80mhz,5ghz-ax:20mhz,20/40mhz,20/40/80mhz 
     ciphers=tkip,ccmp,gcmp,ccmp-256,gcmp-256,cmac,gmac,cmac-256,gmac-256 min-antenna-gain=6 countries=Canada,United States 
     5g-channels=5180,5200,5220,5240,5260,5280,5300,5320,5500,5520,5540,5560,5580,5600,5620,5640,5660,5680,5700,5720,5745,5765,5785,5805,5825,5845,5865,5885 max-vlans=128 max-interfaces=16 max-station-interfaces=3 
     max-peers=512 hw-type="QCA6018" hw-caps=sniffer,qos-classifier-dscp,spectral,channel-switch interface=wifi1 current-country=United States 
     current-channels=5180/a,5180/n,5180/n/Ce,5180/ac,5180/ac/Ce,5180/ac/Ceee,5180/ax,5180/ax/Ce,5180/ax/Ceee,5200/a,5200/n,5200/n/eC,5200/ac,5200/ac/eC,5200/ac/eCee,5200/ax,5200/ax/eC,5200/ax/eCee,5220/a,5220/n,5220/n/Ce,
                 5220/ac,5220/ac/Ce,5220/ac/eeCe,5220/ax,5220/ax/Ce,5220/ax/eeCe,5240/a,5240/n,5240/n/eC,5240/ac,5240/ac/eC,5240/ac/eeeC,5240/ax,5240/ax/eC,5240/ax/eeeC,5260/a/D,5260/n/D,5260/n/Ce/D,5260/ac/D,5260/ac/Ce/D,
                 5260/ac/Ceee/D,5260/ax/D,5260/ax/Ce/D,5260/ax/Ceee/D,5280/a/D,5280/n/D,5280/n/eC/D,5280/ac/D,5280/ac/eC/D,5280/ac/eCee/D,5280/ax/D,5280/ax/eC/D,5280/ax/eCee/D,5300/a/D,5300/n/D,5300/n/Ce/D,5300/ac/D,
                 5300/ac/Ce/D,5300/ac/eeCe/D,5300/ax/D,5300/ax/Ce/D,5300/ax/eeCe/D,5320/a/D,5320/n/D,5320/n/eC/D,5320/ac/D,5320/ac/eC/D,5320/ac/eeeC/D,5320/ax/D,5320/ax/eC/D,5320/ax/eeeC/D,5500/a/D,5500/n/D,5500/n/Ce/D,
                 5500/ac/D,5500/ac/Ce/D,5500/ac/Ceee/D,5500/ax/D,5500/ax/Ce/D,5500/ax/Ceee/D,5520/a/D,5520/n/D,5520/n/eC/D,5520/ac/D,5520/ac/eC/D,5520/ac/eCee/D,5520/ax/D,5520/ax/eC/D,5520/ax/eCee/D,5540/a/D,5540/n/D,
                 5540/n/Ce/D,5540/ac/D,5540/ac/Ce/D,5540/ac/eeCe/D,5540/ax/D,5540/ax/Ce/D,5540/ax/eeCe/D,5560/a/D,5560/n/D,5560/n/eC/D,5560/ac/D,5560/ac/eC/D,5560/ac/eeeC/D,5560/ax/D,5560/ax/eC/D,5560/ax/eeeC/D,5580/a/D,
                 5580/n/D,5580/n/Ce/D,5580/ac/D,5580/ac/Ce/D,5580/ac/Ceee/D,5580/ax/D,5580/ax/Ce/D,5580/ax/Ceee/D,5600/a/D,5600/n/D,5600/n/eC/D,5600/ac/D,5600/ac/eC/D,5600/ac/eCee/D,5600/ax/D,5600/ax/eC/D,5600/ax/eCee/D,
                 5620/a/D,5620/n/D,5620/n/Ce/D,5620/ac/D,5620/ac/Ce/D,5620/ac/eeCe/D,5620/ax/D,5620/ax/Ce/D,5620/ax/eeCe/D,5640/a/D,5640/n/D,5640/n/eC/D,5640/ac/D,5640/ac/eC/D,5640/ac/eeeC/D,5640/ax/D,5640/ax/eC/D,
                 5640/ax/eeeC/D,5660/a/D,5660/n/D,5660/n/Ce/D,5660/ac/D,5660/ac/Ce/D,5660/ac/Ceee/D,5660/ax/D,5660/ax/Ce/D,5660/ax/Ceee/D,5680/a/D,5680/n/D,5680/n/eC/D,5680/ac/D,5680/ac/eC/D,5680/ac/eCee/D,5680/ax/D,
                 5680/ax/eC/D,5680/ax/eCee/D,5700/a/D,5700/n/D,5700/n/Ce/D,5700/ac/D,5700/ac/Ce/D,5700/ac/eeCe/D,5700/ax/D,5700/ax/Ce/D,5700/ax/eeCe/D,5720/a/D,5720/n/D,5720/n/eC/D,5720/ac/D,5720/ac/eC/D,5720/ac/eeeC/D,
                 5720/ax/D,5720/ax/eC/D,5720/ax/eeeC/D,5745/a,5745/n,5745/n/Ce,5745/ac,5745/ac/Ce,5745/ac/Ceee,5745/ax,5745/ax/Ce,5745/ax/Ceee,5765/a,5765/n,5765/n/eC,5765/ac,5765/ac/eC,5765/ac/eCee,5765/ax,5765/ax/eC,
                 5765/ax/eCee,5785/a,5785/n,5785/n/Ce,5785/ac,5785/ac/Ce,5785/ac/eeCe,5785/ax,5785/ax/Ce,5785/ax/eeCe,5805/a,5805/n,5805/n/eC,5805/ac,5805/ac/eC,5805/ac/eeeC,5805/ax,5805/ax/eC,5805/ax/eeeC,5825/a,5825/n,
                 5825/n/Ce,5825/ac,5825/ac/Ce,5825/ac/Ceee,5825/ax,5825/ax/Ce,5825/ax/Ceee,5845/a,5845/n,5845/n/eC,5845/ac,5845/ac/eC,5845/ac/eCee,5845/ax,5845/ax/eC,5845/ax/eCee,5865/a,5865/n,5865/n/Ce,5865/ac,5865/ac/Ce,
                 5865/ac/eeCe,5865/ax,5865/ax/Ce,5865/ax/eeCe,5885/a,5885/n,5885/n/eC,5885/ac,5885/ac/eC,5885/ac/eeeC,5885/ax,5885/ax/eC,5885/ax/eeeC 
     current-gopclasses=115,116,117,118,119,120,121,122,123,125,126,127,128,131,132,133 current-max-reg-power=30

My primary clients are a Mac mini, an iPhone 13, and a Raspberry Pi 5 — which are all supposedly capable of using the 5GHz radio, but can’t ever see the SSID. Like I said I am pretty sure they used to. (otherwise I would have posted this topic a long time ago) Am I missing something obvious with this configuration?

ETA : These devices all connect as expected to the 2.4GHz SSID with basically the same configuration.

Check what frequency is being used for that 5GHz radio.
It’s not in the (very) brief output you provide so that usually means it’s left to auto.
AX devices tend to favor higher channels in latest ROS versions when left to auto (UNII-3 range) while most clients may not yet be able to use those.
Just for testing, set it to 5160 and see what happens then.
Then see if you can find a channel in your area which is relatively interference free and use that one.

Personally I ALWAYS set frequencies manually so I KNOW where they are. No guessing.

Apologies for the delay in responding — got involved in some other projects that distracted me.

Setting to 5160 gave me “No Channels Available” because apparently that’s not a frequency allowed by regulation in my jurisdiction (US) but looking at the lowest possible auto-assigned frequencies I notices 5180 … and when I set it to that (only that) manually, the Test5G SSID popped right up in the client configs.

Ah, now I get to chase this into a new rabbit hole. Thanks for the assist!

Oops, didn’t pay attention to the US setting when mentioning that low channel.

But good you found it yourself, so now you know where to look :grinning_face: