Which function does an SD-Access fabric edge node perform?

An SD-Access fabric edge node is a critical component that directly connects wired and wireless endpoints (users, devices) to the SD-Access fabric. It performs host onboarding, authenticating devices and assigning them to virtual networks (VNs) and scalable group tags (SGTs). The edge node then encapsulates the endpoint's traffic into VXLAN (Virtual Extensible LAN) for transport across the fabric, ensuring proper segmentation and policy enforcement. The other options are incorrect: Encapsulating end-user data traffic into LISP is incorrect; VXLAN is used for data plane encapsulation. LISP (Locator/ID Separation Protocol) is used for control plane functions, mapping endpoint IDs to their locations. Connecting the SD-Access fabric to another fabric or external Layer 3 networks is the role of a border node. Providing reachability between border nodes in the fabric underlay is a function of the underlay routing protocol (e.g., OSPF, EIGRP, IS-IS) running on all fabric devices, not a specific role of the edge node.