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A software-defined-networking (SDN)-based controller (SeerEngine-Campus) provides service intelligence. This controller sets up connections, enforces service levels, and automates operations in order to provide full policy management. When the H3C Application-Driven Campus (AD-Campus) solution SD- W AN architecture is used, it gives users secure network access through a variety of transport technologies. EVPN and VXLAN work together to make campus networks that can manage multiple LANs over SDWAN that are highly scalable, efficient, and flexible. Network operators can set up much bigger networks than they could with traditional Ethernet-based Layer 2 architectures by deploying common sets of policies and services across campuses. EVPN-VXLAN separates network infrastructure from services and applications specific to each department or customer. This idea of network virtualization makes …