Access to other devices via repeater

Hi,

I have a R7000 router with a EX7700 repeater. Some devices are connected with the R7000, some are connected with the EX7700. Problem: On my devices, which are connected with the R7000, I can only see other devices connected to the R7000 (for example printers, ReadyShare devices). And also those devices, which are connected to the repeater, only have access to the devices which are also connected via the repeater. I want to have access from router-connected devices to repeater-connected devices and vice versa. How? Please support. Thanks!