OSPF Routing how to prioritize interface vs tunnel

Question

1. We have a 2 XGS connected via a private ISP fiber and the interfaces are LAN / GIG. 
 2. For resiliency we have a IPsec Tunnel interface between the same, using a disparate ISPs at each location VPN/GIG. 
 We have been using OSPF for all of our routing between multiple offices with Sophos XGS/FW, and it has worked well! 
 When I enable dynamic routing for the VPN, OSPF uses #2 Tunnel interface as the route in routing table. #1 above should be faster and more dependable as it is an Enterprise connection w same ISP. I want OSPF to use #1, LAN interface as primary instead of #2 tunnel. 
 IE: Where can I say weight of #1 Lan is 1, and weight of #2 tunnel interface is 50, or secondary, similar to how we prioritize gateways? 
 I realize it could be done with SD routes / policy, but since OSPF is working well I would like to stay with it. 
 
 Thanks in advance

Mahalakshmi S · Answer

This can be achieved by setting &ldquo;cost&rdquo; associated with the interfaces. If a route is learned via two interfaces, the path with a lower cost would be preferred. 
 Cost of an interface can be set as follows: 
 Under OSPF configuration, in the &ldquo;Override Interface section&rdquo;, for the relevant interface, disable the &ldquo;Autocost&rdquo; and configure the cost values such that the overall cumulative cost of the preferred route is lesser. 
 Thanks,

OSPF Routing how to prioritize interface vs tunnel

Top Replies