• Do not use a virtual link or tunnel directly between R1 and SW2.
I avoid virtual links that are not to abrs so I did not do multiple virtual links as the SG did. I configured a second ospf process on sw2. Then configured it for area 51 so it would neighbor with BB2. Then I did mutual redistribution between the two OSPF processes. At the time it seemed a logical solution but the routes are external to the other OSPF routers.
Would you mark this task as incorrect?