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Wow, just wow as I have all those setting correctly set.  That document was super helpful, and easily able to confirm.  So I guess this is the end of the road for me with the Cisco vWLC.  Unreal!

Something with the 5Ghz overall is an issue, as I have it enabled on the first SSID.  But not device will automatically detect the 5Ghz channel and favor to use it.

Just so I'm not missing it, when you say map that VLAN.  Where do I do that at? I have the VLAN set, or mapped under FlexConnect on under the Wireless tab.  You said separate 2.4Ghz and 5Ghz SSIDs means I'm bridging two different VLANs, but they are actually configured as the same VLAN and I never created a new VLAN for 5Ghz.  Maybe that's my problem overall that I didn't separate them that way, as I didn't know.  I just added the 2nd SSID to the same VLAN and just configured the SSID.

So the radio policy is indeed set for 'ALL' but my MacBook is right next to the AP and it's still preferring 2.4Ghz.  So that's why I thought I would create a dedicated 5Ghz.  I've never seen a device get on the 5Ghz network on it's own.  I think I'm missing a configuration if this is the case that it will choose the best band, because it for sure should be choosing the 5Ghz SSID since it's so close to the AP.

Thanks so much for continuing the help me.  I'm learning more and helps to talk it out, as the walls haven't been of much help.

Forgive me if I'm missing it, but I don't think this would be an issue since the AP is on the correct VLAN, tagged appropriately as well as the user VLAN, which can indeed get an addressed assigned.  But this is only the case on the 2.4Ghz SSID.  If I add the 5Ghz SSID to the vWLC using that same AP, that's associated to the same AP Group I would think it would be a L2 issue.  Or am I wrong in that statement?   

Within the AP Group, the only different is it has a different WLAN ID, with the corresponding Profile Name(SSID Name) but inside the settings, for L2 and L3 options, it's purely security related (ie WPA+WPA2, Encryption, PSK athentication) options like this.

That's correct, I had to enable flexconnect because it's running as a virtual machine.  I know on our other WLC the flexconnect option is not enabled.

So I thought you had something, as that would be a great catch.  But I confirmed I do indeed have the correct VLAN Mappings for the native vlan, and the inheritance is set for WLAN-Specific just like the working SSID.

The MacBook states the network is not available, and the iPad states the password is incorrect.  So weird.

On the plus side, I did change the channel on the 2.4Ghz SSID and the interference appears to have stopped.  I switched it to channel 6 for the 2.4Ghz network.

But the 5Ghz SSID ...

Funny have it I just picked up an Android device the other day, so let me fire that up and take a look.

I was thinking this could be a layer 2 issue, as I have my networks separated.  By separated, I mean that my APs sit on it's own VLAN on 10.10.20.x /24 and my devices on another VLAN on 172.17.70.x /24.  Now, all I did was add a second SSID to the network controller, which I would think would just sit on the device VLAN as the first SSID does, right?  I believe it is, as I see here under All APs > HallwayAP > VLAN Mappings with the appropriate VLAN ID.

I switched it to channel 100 too, and still no luck.

I noticed a lot of rogue AP messages under the Trap Logs, but I have a feeling this is normal on the 2.4Ghz frequency. It looks something like this, which per the MAC address OUI is a Netgear device.

Code Select Expand

Rogue AP: e4:f4:c6:19:56:7b detected on Base Radio MAC: 5c:83:8f:c7:c2:30 Interface no: 1(802.11ac) Channel: 153 RSSI: -73 SNR: 22 Classification: unclassified, State: Alert, RuleClassified : N, Severity Score: 0, RuleName: N.A. ,Classified AP MAC: 00:00:00:00:00:00 ,Classified RSSI: 0

This doesn't surprise me.  Also, I must say I know I'm running an older version of the wireless controller.  So it might be a good idea to upgrade the WLC.  I'm just worried something will tank, and then I'm really in trouble.  I haven't upgraded a WLC before, but I'm thinking it shouldn't be much different than a switch.  I wonder if I can just do it from the GUI?  I will poke around now and verify.

So just so I'm understanding this, the channel I choose is open to choose I just need to verify if other things are on it.  Like I've scanned SSIDs around me, and they are all on the standard 11 and the other norms people deploy by default.  So can I choose any other one of my choosing?

Thanks so much guys for the quick reply!  You guys have been so helpful, and given me some paths to take on tshooting this issue.

@deanwebb
So I believe there is definitely some kind of interference, as on my 2.4Ghz SSID my NEST cameras have been cutting out and it keeps saying some kind of interference is affecting the connection.  When I attempt to stream video, at random times it will cut out.  As far as what's between them, there isn't much that would cause interference to my knowledge. 

The AP does indeed show registered in the WLC.

@dieselboy
I did try forgetting the network, and attempt to reconnect to it.  So I'm thinking changing the channel would be a good idea.  So, do I have to be cognizant on which channel I choose?  I did change it back to 40mhz for some increased performance, but let me put that back down to 20mhz. 

I didn't see any logs in the WLC.  Maybe I'm looking in the wrong place, but it came up empty.  Am I able to see those logs if I console into the WLC?  View them just like I would on a Cisco switch?

@ristau5741
I will check out that link.  Thank you!

So my main devices that connect to the WiFi are MacBooks, iPads, and iPhones. So it would just be the iPhone that could do 5G, which I must say does save me at times.

I thought about dumping the whole Cisco WLC setup, and switching to Ubiquiti.  But I'm thinking the issues might in fact be the same, if it truly was an interference issue.  The whole WiFi setup is pretty great, as it's enterprise grade.  I'm going to change the channels, as I noticed earlier today there are a ton of other WiFi networks in the area, I'm talking about 25+ SSIDs.

I've been having issues with wireless on my 2.4Ghz network.  So I decided to create a 5Ghz SSID, and I'm unable to connect to it.  I went ahead and removed PSK and opened up access, but I'm still unable to connect to that SSID.  Error states connection failed.

I'm running a vWLC, version 8.2.110.0 on ESXi with Cisco 3700 APs with the short stub external antenna. 

I've configured -

Radio Policy: 802.11a only
Broadcast SSID: enabled
FlexConnect Local Switching: Enabled

Somebody told me it could be a channel issue, but I don't believe so as my new 5Ghz SSID is running on channel 36,40 and my 2.4Ghz SSID is running on channel 11.

I'm at a loss why creating a new SSID wouldn't work.