We're moving from Cisco ASA to Fortigate and I have a little bit problem with redistributed ospf networks.
So basically R4 redistrubute connected networks. When I enable interface with VLAN510 on R2 with metric 5000 those redistrubuted networks from R4 are available through R1, but when this interface is not up, those networks are available through R3 with metric 250.
I want to have access to those networks through R3, but It still prioritize route through R1 (with metric 5000)
Why is it happening? Is there anything that I'm missing?
I attached simple network diagram to visualize my problem.