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Your company is utilizing a multi-cloud architecture with applications running on both OCI and AWS. You have established a Site-to-Site VPN connection between OCI and AWS for secure communication. Over time, you observe that the VPN tunnel becomes unstable and frequently disconnects, particularly during peak hours. You suspect this is due to increased network latency and packet loss. Which action is least likely to improve the stability and reliability of your OCI-AWS Site-to-Site VPN connection in this scenario?
Correct Answer: C
* Problem:VPN instability during peak hours due to latency and packet loss. * Evaluate Actions: * A:Optimizing IKE/IPSec reduces overhead; improves stability. * B:QoS prioritizes VPN traffic; enhances reliability. * C:Increasing MTU may worsen fragmentation if path MTU isn't matched; least effective. * D:Dedicated interconnect eliminates internet issues; most effective. * MTU Insight:Raising MTU without path MTU discovery risks more fragmentation, not less. * Conclusion:Increasing MTU is least likely to help. VPN stability requires addressing network conditions. The Oracle Networking Professional study guide notes, "Adjusting IKE/IPSec parameters or using QoS can stabilize VPN tunnels, while increasing MTU without path MTU alignment may exacerbate fragmentation" (OCI Networking Documentation, Section: VPN Troubleshooting). Dedicated interconnects are ideal, but MTU adjustment is risky here.
