Software-defined networking in aviation: Opportunities and challenges

• Improving cost and control of onboard networks — Network equipment weight, space, power, and cost constraints; controlling dynamic traffic load and QoS needs of mixed-critical applications in an increasingly heterogeneous onboard network • Managing increasingly complex networks-of-networks — Multiple competing tenants; heterogeneity in network configurations, policies, applications, and domains; competing service providers • Meeting demanding network performance goals of aviation — Mixed-criticality of traffic; high dependability; high availability; real-time guarantees; flexibility; scalability; security; and usability • Enforcing policies in global multi-stakeholder network — e.g., security policies for use-cases encountered by e-enabled aircraft.