Which statement best describes the role of OMP in Cisco SD-WAN?

• A. Exchanges routing and policy information between controllers and edge devices
• B. Encrypts edge-to-edge data traffic
• C. Maintains STP topology
• D. Polls SNMP configurations

Answer: (A)

OMP, or Overlay Management Protocol, is the control plane protocol that Cisco SD-WAN uses to exchange routing information and policy data between the edge devices (the gateways at sites) and the SD-WAN controllers. Through OMP, routes learned by the edge and the routing decisions and policies defined by the controllers are shared across the overlay, enabling dynamic, policy-based path selection for traffic across the WAN. This is why it’s the best description of OMP’s role. The other options describe functions handled by different mechanisms: encryption of traffic is done by IPsec tunnels, STP maintains Layer 2 topology, and SNMP polling is a management function, not part of OMP.