I need design input assistant from you experts.
Our Vendor has proposed the attached design to connect our regional and international branches to HQ and DR Sites.
DR= OSPF area1
each regional office connection on different ospf are
each internation office connected via GRE VPN on different area.
WAN LINK between HQ to DR = EIGRP to load balance unequal links.
QOS on all VPN router and Regional MPLS router.
Can I get some expert opinion on Routing Protocol proposed and classification of Area. We are still in discussion phase, so can change design if needed.