ssid disappears

[bluesea2010]

Hi,

Some devices do not see  some ssid SSID,(The SSID is running both 2.4 and 5 Ghz).

I have three SSID , sometimes the device cannot see the SSID intended to connect 

what could be the issue 

Thanks

[marce1000]

       - Perhaps the device(client)  is too far away from the access point(s) ?

 M.

[bluesea2010]

Hi @marce1000 

the device can see other SSID's from the same  AP ,but not all 

Thanks 

[marce1000]

        - How many SSID's are you broadcasting ?

 M.

[Leo Laohoo]

Broadcase SSID is disabled?
AP in a different AP Group?

[Scott Fella]

Really hard to understand what you are saying. First off, what equipment do you have, model and firmware. How many aps do you have, do all client have that issue or just a few. What type of encryption are you using on each ssid?  Is there a specific ssid that is broken. 

[bluesea2010]

Hi @Scott Fella 

AIR-CT5760  , 03.06.05E 

Total Ap's 275  .

do all client have that issue or just a few , few  clients reported

 What type of encryption are you using on each ssid  WPA2 encryption +AES

Thanks

[Flavio Miranda]

Hi

I´ve see this many time before related to authentication issue. If devices try to join the SSID too many times and fail on the authentication, it will be placed in a black list and SSID will desapear.

 If you are using AIROS, look at Client Summary, Excluded Clients.

Algo, run deboug with "debug client mac address" and share logs.