Before running MPLS on your production network, make sure you have an in-depth understanding of MPLS and VPLS. It makes for a hard time troubleshooting when things screw up if you don't. For an overview of how and why MPLS http://en.wikipedia.org/wiki/Multiprotocol_Label_Switching MPLS can run alongside your existing IGP such as OSPF which will still determine the best path. Set up your LDP neighbors with targeted addresses, using a loopback address. For a basic MPLS implementation, the following configuration is needed on every Mikrotik router. The routers need to be on 4.xx, preferably the latest (4.16 at the time of writing).