Advise on setup for wireless network

Question

Hello everyone, 
 I am looking for some advice on how to set up my network so I can add additional APs without having them directly plugged into the XG. A rough network diagram is below. 
 My current setup is: 
 2 AP100Cs connected directly to the XG310 that has multiple SSIDs and are all "Separate zones" 
 The internal network is using a level 3 switch that has IP routing enabled with different VLANs and a DHCP server that handles the IPs for the internal traffic. 
 On the XG I have a firewall rule to allow the traffic of the internal SSID to get to the L3 switch. 
 
 If I plug in additional APs to the switches with the SSIDs being Separate Zones will this create a tunnel to the XG and just work or do I need to set up VLANs so it routes the guest traffic separately from the internal traffic? What would be the best way of setting this up so that it is scalable in the future?

Thank you in advance to any suggestions

Jaydeep · Accepted Answer

Hi Luis Londono 
 I'd suggest using the AP with the existing set of VLANs. AP will be able to send the traffic to XG via a virtual tunnel. For peace of mind, I suggest moving any of your existing APs and connect it with the L3 switch if feasible or simply connect your new APX 530 and have those separate zone SSIDs on it. APs are not required to connect directly with XG unless you have an option to do so.