EVPN (Ethernet VPN) is a BGP-based control-plane technology that distributes MAC and IP address reachability between switches, most commonly paired with a VXLAN data plane in data center fabrics. By advertising endpoint information through Multiprotocol BGP rather than relying on flood-and-learn, it reduces unnecessary flooding, supports active-active multihoming, and enables scalable Layer 2 and Layer 3 overlays. It is specified in IETF RFC 7432.
Category: Network & Connectivity · Subcategory: Data Center Network Architecture · Part of the AIDC Technical Terminology reference.