I have a several 7024 Series controller at 2 different office locations. Both controllers are running the same OS version(6.4.4.16 w/ AP225) and configured identically.
At site A, when I run show ap essid, I get the appropriate vlan assignment for each ESSID. When I run the same command at site B, on 2 of the ESSID, there are two VLANs present. I checked the standard L2 IP info, user roles, VAP configurations for a possible misconfiguration. No luck.
The configurations on Site A controller is consistent with Site B.
ESSID Summary Site A
-------------
ESSID APs Clients VLAN(s) Encryption
----- --- ------- ------- ----------
CORP_WLAN 25 20 100 WPA2 8021X AES
BYOD_WLAN 25 10 200 WPA2 8021X AES
GUEST_WLAN 25 5 300 Open
ESSID Summary Site B
-------------
ESSID APs Clients VLAN(s) Encryption
----- --- ------- ------- ----------
CORP_WLAN 25 20 100,300 WPA2 8021X AES
BYOD_WLAN 25 10 200,300 WPA2 8021X AES
GUEST_WLAN 25 5 300 Open