The correct answer is C. Data.
Cisco SD-WAN architecture is divided into three main planes:
* Management Plane
* Handled by vManage
* Used for configuration and monitoring
* Control Plane
* Handled by vSmart (OMP protocol)
* Responsible for routing information exchange and policy distribution
* Data Plane
* Built using IPsec tunnels between WAN Edge devices
* Responsible for forwarding actual user/application traffic between sites The data plane is the plane that:
* Carries user traffic
* Transports data between SD-WAN sites
* Uses secure tunnels (IPsec) for communication
* A. IPsec IPsec is a technology used within the data plane, not a plane itself.
* B. Management Used for configuration and orchestration, not traffic forwarding.
* D. Control Used for routing and policy decisions, not actual traffic transport.
Memorize SD-WAN planes:
* Management Plane # vManage (configuration)
* Control Plane # vSmart (routing/policy via OMP)
* Data Plane # IPsec tunnels (user traffic transport)
User traffic = Data Plane