Have you guys figured this out? We have a very similar scenario at our site. We currently have MPLS connecting 6 locations. Routing is done by our ISP. We are moving away from MPLS and recently starting to implement Metro-E at our locations. Each location has a designated cheap uplink. Currently I am using each location's core L3 switch to do failover routing for both MPLS/Metro-E and uplink ( I wanted it to use MX auto-vpn if MPLS/Metro-E goes down and if local uplink goes down, send default route to MPLS/Metro-E). Ultimately I want to move all these routes to MX, so I only need to manage local L3 routing on Core switch. I attempted to setup this configuration, https://documentation.meraki.com/MX-Z/Site-to-site_VPN/Configuring_Site-to-site_VPN_over_MPLS, on our sites, but branch keeps forming autovpn over its own uplink instead of over Metro-E. Did anyone figured this out? By the way, the HQ has two uplinks and Metro-E connection.
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