When configuring transitive routing through a network appliance in a hub-and-spoke VCN topology, which configuration is necessary to ensure that traffic from a spoke VCN to another spoke VCN passes through the network appliance?
A.
Configuring static routes on the DRG route table pointing to the network appliance’s private IP address.
B.
Attaching the network appliance to a Service Gateway.
C.
Using an Internet Gateway to route traffic between the spoke VCNs.
D.
Implementing a Local Peering Gateway (LPG) between the spoke VCNs.
Goal: Force spoke-to-spoke traffic via a network appliance in hub-and-spoke topology.
Option A: Static routes on DRG to appliance ensure transitive routing—correct.
Option B: Service Gateway is for OCI services—incorrect.
Option C: Internet Gateway is public, not hub-and-spoke—incorrect.
Option D: LPG bypasses the appliance—incorrect.
Conclusion: Option A is necessary.
Oracle notes:
"In a hub-and-spoke topology, configure DRG route tables with static routes to the network appliance’s private IP for transitive routing between spokes."This supports Option A. Reference:Hub-and-Spoke Topology - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/hubspoke.htm).
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