300-415 Question 189
Single answerAn organization has deployed Cisco SD-WAN in a hub-and-spoke topology. The network team wants to ensure that branch-to-branch communication is allowed without routing all traffic through the hub. Which Cisco SD-WAN feature or configuration can be implemented to achieve this while maintaining the hub-and-spoke control plane?
- A
Enable Direct Internet Access (DIA) at each branch site.
- B
Configure Application-Aware Routing policies to allow branch-to-branch traffic.
- C
Implement a Partial Mesh topology by configuring TLOC extensions between branches.
- D
Use Data Policies to permit branch-to-branch traffic and bypass the hub.
Show answer and explanation
Correct answer: D
Explanation
In a hub-and-spoke Cisco SD-WAN topology, all traffic is typically routed through the hub. If branch-to-branch communication is required without routing through the hub, Data Policies can be implemented to bypass the hub for specific traffic flows while keeping the overall control plane topology intact. This approach ensures efficient traffic routing without compromising the hub-and-spoke design.
- A. Incorrect.
Direct Internet Access (DIA) is used for direct access to the internet from branch locations, not for enabling branch-to-branch communication.
- B. Incorrect.
Application-Aware Routing optimizes application performance by choosing the best path for specific applications but does not change the topology or routing behavior for branch-to-branch traffic.
- C. Incorrect.
TLOC extensions are used in specific scenarios to extend transport visibility or redundancy but do not directly facilitate branch-to-branch communication in a hub-and-spoke topology.
- D. Correct.
Data Policies in Cisco SD-WAN can be configured to permit branch-to-branch traffic and ensure it bypasses the hub while still maintaining the hub-and-spoke control plane. This is the correct solution for the scenario.