Meraki 64 behind cisco adsl router

[Ranti13]

Hi All,

I was looking for some help regarding the design I'm doing at the moment. Topology below:

https://imgur.com/a/J5q52kH

what the best way to configure this?

Any suggestion would be appreciated.

[PhilipDAth]

What are you trying to achieve?  MPLS failover?  What is the ip sla for?

[Ranti13]

MPLS is for voice traffic only. Data traffic will be on ADSL. I'm not thinking about voice at the moment. I'm just wondering how to set up routing in the Meraki device? 

I've done other site with Meraki as an edge device and connected directly to the internet with an Etherwire connection I've put the routing as following:

https://imgur.com/a/wHDd3WS

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?

[PhilipDAth]

If the ADSL circuit is an Internet circuit then plug it into a WAN port on the MX.  The MX will have a default route pointing to it - but you wont have to add this.  It will happen automatically.

[Ranti13]

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.