It is possible to add one SSID in bridge mode and the other one in normal mode. But this doesn't solve your problem with the limit. Because when the mixed mode is active the lowest amount of possible AP is selected in your case normal mode.
When you putt everything in bridge mode then you can register more then 5 AP. Bridge mode is simply a local break out to a VLAN. So the traffic doesn't directly travel to the Fortigate unit with the use of a tunnel. But is put on a VLAN for example a office vlan or a guest vlan.
What you need to do in case of bridge mode is creating the following networks:
[ol]Untagged - Management CAPWAP enabled gateway interface - This will provision your AP'sTagged - (Example) Office network (local break-out)Tagged - (Example) Guest network (local break-out)[/ol]
Hope this helps you.
I have a Fortigate 60C and 7 FortiAP. I know i can't add all my AP to the Fortigate in normal mode.
I read this http://kb.fortinet.com/kb/documentLink.do?externalID=FD36164
But what i don't understand is what involve the bridge mode ?
Is there a way to add two differents SSID to an AP, one in bridge mode and the other in normal ?