Company XYZ plans to run OSPF on a DMVPN network. They want to use spoke-to-spoke tunnels in the design. What is a drawback or concern in this type of design?
A.
Additional host routes will be inserted into the routing tables
B.
Manual configuration of the spokes with the appropriate priority will be needed
C.
There will be split-horizon issue at the hub
D.
Manual configuration of the spoke IP address on the hub will be needed
A (Additional host routes):Spoke-to-spoke dynamic tunnels in DMVPN phase 3 result in OSPF populating routing tables with multiple /32 host routes for each spoke-to-spoke tunnel, which can impact scalability and routing table size.
Other options explained:
B: Priority changes not typically required.
C: Split-horizon issue is solved in DMVPN phase 3.
D: Spokes dynamically register with the hub; no manual spoke IP configuration needed.
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