I recently inherited a Wi-Fi network that's having a number of issues however I bring you one today.
I currently have 5 SSID's on a Cisco 5508, the problem is I can join just one of those SSID's. When I switch to one of the other SSID and enter the password I get this error message "Network Security Key Mismatch". I am toll "All SSID's" have worked in the pass but one day they started having an issue connecting to all except one. I am also told by someone who's memory fails them that 3 engineers or so more before me told them it had to do with either the user MAC was tied too long to the DHCP address it was issued and they had to go in and manually clear/remove before they could rollover... Or that they had to issue some release command to be able to then access the other SSID and then the same thing to go back to the original SSID... Anyone have such and issue and have a fix?
if not, you can enable it controller > Fast SSID Change
See below:
Fast SSID change
Also, as a rule of thumb, please restrict number of SSIDs to 3 or less unless it is really required.
By reducing the number of SSIDs the available air quality can be improved and hence better wireless performance.
Also, you can validate your WLC configuration using Cisco WLC configuration Analyser to make sure all the recommended features are enabled/disabled on your WLC.
