We have 5 offices. A main office and 4 branch offices. We are all conected via a MPLS Wan provided by Verizon, running BGP. Last year we added a Ethernet line from branch A to the main office. Router at the main office and at the branch have a static route pointing to each other. Problem is the other branches see that static route and are sending traffic to the main office via the Ethernet line, and not the wan. Ethernet line goes down, everything goes down basically. Ethernet line is supposed to be used for disaster recovery, replication of servers from main office to branch A, not "regular" day-to-day traffic.
Any way to set this up so that only certain traffic goes through the Ethernet line?