Can anyone suggest how to set up wireless access with Peplink 30 and the Airport Extreme Base Station? I also the Airport Express Base Station enabling USB-printing and as some for extending the wireless network in the house.
You should configure the Airport Extreme as a wireless access point instead of a router. You can do this by disabling the DHCP server, set a static IP on the LAN interface within the range of the Balance 30 subnet, and do not use the WAN port to connect it to the network; use one of the LAN ports instead.