Although the centralized design of WLAN controller solution looks very attractive to me, i am unable to propose this solution to one of our clients due to the apparent limitation that it has with respect to mapping the WLAN to SSIDs. I understand that although it supports 16 SSIDs, one cannot map a given SSID in a group of APs to a particular WLAN and map the same SSID in another group of APs to another WLAN. Basically what i am trying to achieve is to breakup the broadcast domain for a given SSID. Say i hv guest SSID defined in the WLAN controller. All the nodes associating to this WLAN controller via APs, using this SSID will belong to one broadcast domain. If this controller manages say 50 APs and there are atleast 20 users per AP, then about 1000 users in one broadcast domain. I want to know is there any way that we can breakup this large broadcast domain..