I sort of wished I hadn't asked
No problem on digging into things. I currently have the GT-BE98 Pro as my main router. Your guess is plausible from what I saw. I do have an IOT Guest network that I setup using GNP. It covers 5Ghz and 2.4Ghz. The AX58U node is the only non-wifi 7 capable unit in my AI Mesh. It lives in under the floor of an attic space in my garage, with it's sole purpose to provide connection to my two outdoor cameras in that location. My house has lot of insulation and shielding that kills wifi signals getting to outside clients, and I wanted something inexpensive, as it has to live in a dusty environment and survive ambient temps of 140 deg F at times.Hmmmm, interesting observations. You didn’t mention your main router or what FW it was running, nor whether you use Guest Network or Guest Network Pro.
Being curious about the issue, I had a wee look at your various past posts and it seems you have (or have had) a RT-AX58U (Node), RT-AX3000 (Node), RT-AX98X (Node), GT-BE98 Pro (Main), ASUS RT-BE96U (node), two RT-AX55 and an RP-AX56, quite the collection, not sure if your using them all at once ;-). No Merlin.
The reason I had a look (sorry, not spying) was to see if you were using Guest Network Pro (GNP), the recent version of which seems to limit non-3006 based FW nodes to just ONE Wi-Fi Interface per band per device.
What I believe (my limited experience) this means is that if you have set up a VLAN Network in GNP with SSIDX, that NodeZ can only serve SSIDX with 2.4Ghz and 5Ghz and will not accept any other Networks. If you set up SSIDY and you elected to propagate only the 5Ghz band to that NodeZ, then NodeZ will still have the 2.4Ghz band free for SSIDX; but not the 5Ghz band. So where I was going with this was wondering if that’s what you’re experiencing, although I cannot account for the behaviour on the older FW, this is just a wild guess really.
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