Final answer:
OSPF running on individual routers is an example of the control plane, which is responsible for determining the paths that data packets take through a network.
Step-by-step explanation:
OSPF (Open Shortest Path First) running on individual routers in a traditional network is an example of the control plane. In network design, there are three primary planes: the data plane (also known as the forwarding plane), which handles the actual transport of data packets from one device to another, the control plane, which determines the routes that data packets should take, and the management plane, which is responsible for administrative tasks. OSPF is a routing protocol that is part of the control plane, as it governs the decision-making process regarding how packets should be routed through the network.