300-415 Question 19
Select 3In a Cisco SD-WAN deployment, how does the vSmart controller use the Overlay Management Protocol (OMP) to maintain the control plane?
- A
Advertises routing information, including TLOCs and service routes, to all connected vEdge routers.
- B
Establishes IPsec tunnels directly with vEdge routers for secure data plane communication.
- C
Distributes security policies, such as encryption keys, to vEdge routers.
- D
Synchronizes the control plane routing information between multiple vSmart controllers in a cluster.
- E
Manages the direct communication between vEdge routers and the management plane (vManage).
Show answer and explanation
Correct answers: A, C, D
Explanation
The vSmart controller is central to the control plane in Cisco SD-WAN and uses the Overlay Management Protocol (OMP) to manage routing information, distribute policies, and synchronize routing data between controllers in a cluster. It does not handle data plane functions like establishing IPsec tunnels or manage the management plane communication with vManage.
- A. Correct.
Correct: vSmart uses OMP to advertise routing information, including TLOCs (Transport Locators) and service routes, to all vEdge routers. This ensures the network devices know how to reach each other.
- B. Incorrect.
Incorrect: IPsec tunnels are part of the data plane, which is established directly between vEdge routers or between vEdge routers and vBond. vSmart does not directly establish IPsec tunnels.
- C. Correct.
Correct: vSmart distributes security policies, such as encryption keys and data plane policies, to vEdge routers as part of its role in managing the control plane.
- D. Correct.
Correct: In a cluster of vSmart controllers, the routing information is synchronized to ensure consistency and redundancy in the control plane.
- E. Incorrect.
Incorrect: vManage is responsible for the management plane, and vSmart does not manage the direct communication between vEdge routers and vManage.