Yesterday, I was testing my new WIFI scanning software (inSSIDer) and notice that my APs are broadcasting a hidden SSID as shown below:
I don't recognize those MAC address but they are showing as Meraki and it's using the same channels as my APs. I check my list of SSIDs to make sure but they aren't. They are also not hidden in "SSID availability". Any ideas how to check this?
I also want to make sure that this is not just a bug for the INSSIDER software.
It's the mesh SSID. You can disable it under Network-wide > General.
I agree with @jdsilva it is for MESH networking - but I don't believe it can be turned off via the Dashboard.
It can be disabled, but I believe you have to request support to enable the toggle for it though. You did in the past anyhow. Not sure if they've defaulted it to being view-able for all or not.
This Mesh setting appears to be enabled by default now. Nice! Now I can turn it off without opening a case with Meraki support.
Those are used for mesh routing and I believe some may be for how MRs handle band steering.