I have a laptop connected to SSID1 and another to SSID2. Each can ping each other without a problem, but neither can ping a device on the SSID3 network. From a hard line (in this case off of one of the servers) I can ping the device on the SSID3 network without a problem.
There are no ACLs applied on the WLC or core switch where the VLANs are implemented.
Is there a setting somewhere on the SSID3 interface that could be blocking traffic?