Besides VLANs if all your looking for is LAN segmentation (guest user isolation) you can enable one VLAN to use the Public Secure Packet Forwarding under the VLAN services tab on your APs. Each client is then fully segmented. As per Cisco's doc's o...
You need either a 6000/6500 WLSM module to act as the WDS to exceed that amount or see if they use the Supervisor 720 for thier core switching; which can also do WDS. The issue with subnetting is that roaming from AP to AP wont happen (i.e a new IP ...
I had the same issue with the added complexity of having to dish out multiple vlans as well. I upgraded our WLSE (model 1130) from 2.12u to 2.13.1 and I could once again use the WNM(WLSE). Make sure your AP1240 is using IOS 12.3(8)JEA or 12.3(11). A...