An engineer is designing a DMVPN network where OSPF has been chosen as the routing protocol. A spoke-to-spoke data propagation model must be set up. Which two design considerations must be taken into account? (Choose two)
A.
Configure all the sites as network type broadcast.
B.
The network type on all sites should be point-to-multipoint.
C.
The network type should be point-to-multipoint for the hub and point-to-point for the spokes.
D.
The hub should be set as the DR by specifying the priority to 255.
E.
The hub should be the DR by changing the priority of the spokes to 0.
B (Point-to-multipoint network type): OSPF point-to-multipoint allows the hub to see the DMVPN topology correctly without complex neighbor relationships.
E (Set spokes priority to 0): Ensures the hub always becomes DR, maintaining predictable OSPF adjacency behavior.
Other options explained:
A: Broadcast mode is inefficient and unnecessary in DMVPN designs.
D: Manually setting the hub priority is redundant when spokes are at priority 0.
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