The devices support a reoptimized architecture, which enables you to use the Junos Control Plane (JCP) as the single point of management to manage all the components. Key components in the software include the JCP, Juniper Device Manager (JDM), Layer 2 dataplane, Layer 3 dataplane, and virtualized network functions (VNFs). The JDM functions in the background. Users cannot access the JDM directly.