RESILIENT ENTERPRISE SDN ARCHITECTURES: ENHANCING PERFORMANCE AND RELIABILITY IN NOISY ENVIRONMENTS TO ENSURE BUSINESS CONTINUITY
TL;DR
This paper describes how a standard SDN implementation of network switches rely on constant communication with the controller via southbound protocols (such as OpenFlow) when the control channel is exposed to high noise.
Abstract
1. Introduction The decoupling of the control plane from the underlying data plane is the core innovation of Software-Defined Networking (SDN). By centralizing control logic into software-based SDN controllers (e.g., OpenDaylight, ONOS), organizations gain global network visibility, automated policy enforcement, and rapid provisioning. However, modern enterprise environments are increasingly deployed in adverse physical and logical conditions. Industrial IoT manufacturing floors, tactical wireless mesh networks, remote edge sites, and mission-critical enterprise branches often operate over noisy channels. "Noise" in this context refers to both physical interference (EMI, radio signal degradation) and logical distortion (packet corruption, control path congestion, and distributed denial-of-service/DDoS noise). In a standard SDN implementation, network switches rely on constant communication with the controller via southbound protocols (such as OpenFlow). When the control channel is exposed to high noise: Control Path Disruption: Keep-alive messages (Echo requests/replies) fail, leading to false-positive link outage detections.