But with this design, its ADSL and Meraki doesn't have RJ11 support. So I've put a Cisco 877 ADSL router as the edge device to connect to the provider. but not sure how to configure routing between the ADSL device and Meraki. Should I create another static route pointing to the ADSL router?
Sorry didn't understand what you mean ADSL circuit is internet circuit. ADSL line with an RJ11 port connected to the Cisco ADSL router, and then Router is connected to the Meraki. What I think this connection would be in the Internet/WAN port of the Meraki and the Cisco ADSL router. However, my question is where should I do the NATing? At the moment I'm doing it in the ADSL router.