What communication protocol is utilized by the Control Plane for fabric discovery?

The correct choice is OMP, which stands for Overlay Management Protocol. OMP is specifically designed for fabric discovery and control plane functions in an SD-WAN (Software-Defined Wide Area Network) environment. It facilitates communication between different components of the network, allowing them to exchange information about routing, topology, and other necessary parameters to establish and maintain the overlay network.

OMP plays a critical role in the management of the control plane by enabling devices to find each other and coordinate their operations within the fabric. This is essential for ensuring efficient data flow and for the dynamic adjustment of the network based on current conditions.

The other protocols listed serve different purposes. OSPF (Open Shortest Path First) is a widely used routing protocol but does not cater to the specific needs of fabric discovery in an SD-WAN context. RIP (Routing Information Protocol) is an older distance-vector routing protocol that is not suitable for modern fabric architectures. ICMP (Internet Control Message Protocol) is primarily used for error messages and operational information in network communications but does not perform the functions required for fabric discovery. Thus, OMP is the appropriate protocol for this scenario.