Analytical performance model of virtualized SDNs using network calculus

Software Defined Networks (SDN) are proposed as a new solution to facilitate dealing with some major network management issues. Just like other networks, SDNs are considered as a communication resource which can be shared between several tenants. However several virtualization solutions are proposed in the past to provide necessary mechanisms to slice SDN between several virtual networks, but virtualizing SDN can cause some performance degradation issues (e.g., additional packet forwarding latency). In this paper a novel network calculus based analytical model is proposed to get the upper bounds on some performance parameters of virtualized SDNs.