too many connections

[UniqueIdentity]

We have two MX 105's in building A setup in passive failover mode. Along with this, we have dual ISP's to minimize any single point of failure. Everything works the way its supposed to.

We have building B that is connected to A with a privately owned fiber however, that fiber connection has been identified as a single point of failure.

We are purchasing a new internet connection for building B, and we are looking at purchasing new meraki hardware but we aren't sure of the best way to set this up such that building B uses our privately owned fiber as a primary connection between buildings, but if that connection fails, it automatically switches over to using a site-to-site VPN to building A.

[ww]

Make a transit vlan/ subnet between the two devices.

Then create all static routes with tracking with next hop the other mx ip

https://documentation.meraki.com/MX/Networks_and_Routing/MX_Routing_Behavior#Static_Route_Tracking

This describes it better but instead of mpls you use the fiber

https://documentation.meraki.com/MX/Deployment_Guides/MPLS_Failover_to_Meraki_Auto_VPN

[PhilipDAth]

>We have building B that is connected to A with a privately owned fiber however

You could also buy a second private fibre, and LACP can channel them together (assuming it is a point-to-point fibre).  This would also double the bandwidth.