Have a hub and spoke design where each Branch has a single router with a WAN connection to DataCenter1 Hub and another WAN connection to DataCenter2 Hub. There is no OSPF running elsewhere in the DataCenters.
Trying to determine optimal Area design for OSPF for this situation - and to ensure Branch Routers do not become transit for other Branch networks. Should Area0 be run across both WAN links w/ each branch having its own Area defined as a stub on the Branch router. Since there are no connections between the DataCenter WAN routers - wasn't sure of implications of having 'two' Area0s in this manner?