Implementing Cisco Secure Mobility Solutions (SIMOS, legacy) — Question 35

A spoke has two Internet connections for failover. How can you achieve optimum failover without affecting any other router in the DMVPN cloud?

Answer options

• A. Create another DMVPN cloud by configuring another tunnel interface that is sourced from the second ISP link.
• B. Use another router at the spoke site, because two ISP connections on the same router for the same hub is not allowed.
• C. Configure SLA tracking, and when the primary interface goes down, manually change the tunnel source of the tunnel interface.
• D. Create another tunnel interface with same configuration except the tunnel source, and configure the if-state nhrp and backup interface commands on the

Correct answer: D

Explanation

Option D is correct because it allows for the configuration of a backup tunnel interface that can automatically take over when the primary fails, ensuring minimal disruption. Option A is not optimal as it creates a separate DMVPN cloud, which is not necessary. Option B is incorrect because it is possible to use two connections on the same router. Option C involves manual intervention, which is less efficient than an automatic failover process.