300-415 Question 173
Single answerYou are configuring a control policy in an SD-WAN deployment to ensure that traffic between specific branches is dynamically routed through a central data center for inspection. Which configuration step is necessary to achieve this?
- A
Create a TLOC list defining the central data center's transport locations.
- B
Define a topology policy using the 'Hub-and-Spoke' option.
- C
Configure an application-aware routing policy to prioritize data center traffic.
- D
Apply a localized control policy to the branch devices.
Show answer and explanation
Correct answer: B
Explanation
To ensure that traffic between branches is routed through a central data center, you must configure a control policy with a topology definition. Specifically, the 'Hub-and-Spoke' option in a topology control policy directs branch traffic through the designated hub, fulfilling the requirement. The other options either configure transport locations, optimize application traffic, or operate at a device level, none of which achieve the desired global routing scenario.
- A. Incorrect.
Creating a TLOC list is used for identifying transport locations, but this alone does not define a traffic routing topology or enforce the use of the central data center.
- B. Correct.
Defining a topology policy using the 'Hub-and-Spoke' option explicitly configures traffic to route through the hub, in this case, the central data center, which aligns with the requirement.
- C. Incorrect.
Application-aware routing policies are used to optimize application performance but do not define control policies for routing through specific locations like a data center.
- D. Incorrect.
Localized control policies operate only on individual devices and do not impact the overall traffic topology across the SD-WAN environment.