Right now I have an MX 250 in HA connect to my core meraki switch MS425 stack. The MX 250 serves as the site to site connection between the main office to the branch offices, no internet traffic. I have an access port going from the MS to MX and that is working fine. The issue is what I am having is now when I am introducing my DC cores switches (nexus 5548s) to the MX. On the MX I used the multiple vlans options and create two separate access ports to communication to the DC core switches. When I do this the MS core switch losses communications to the MX and to all the branch offices. Am I doing something wrong.? I come from the world of Cisco CLI and normally I would just configure a L3 port with a /30 between the two devices. I open a ticket with Meraki Support and so far I got answer link like the uplinks need to be in the vpn for it to work(tried it off hours and it didn't work). I have attached an image of what I am try to do.
