BGP question with MikroTik

[Davit2005]

Here is scenario. I'm new to BGP.

 

2 MikroTik routers to handle intervlan routing in HA scenario. 2 draytek routers connecting to vDSL with 4g as backup. I don't want to use vrrp on the MikroTik, I've thought about doing some scripting to disable/re-enable ports. Each MikroTik will have one port connected to the vDSL router and one connected to the 4g router, currently I have this going through a vlan on a switch port with other vlans but going to do away with that.

 

I have BGP enabled on the Draytek (well one of them) and managed to distribute the default route and this is working, on the MikroTik I can see the default route and do a traceroute to 8.8.8.8 . Then when I remove the vlan I'm doing the BGP on from the port on the switch the route after a short delay is removed from the MikroTik.

 

I want to set a preference on the MikroTik to use the vDSL but with a backup of the 4g. Hmm, maybe I can do this another way simple such as create a static route to the 4g with a higher metric than the BGP routes? It's only going to be one or the other.

 

Any thoughts.