Abstract:We present the SPN OS, a Network-as-a-Service orchestration platform for NFV/SDN integrated service provisioning across multiple datacenters over packet/optical networks. Our prototype showcases template-driven service function chaining and high-level network programming-based optical networking. IntroductionNetwork virtualization has enabled the deployment of individual tenant-managed network services over a shared physical infrastructure. This growing trend facilitates the emergence of new business models such as Network-as-a Service (NaaS), wherein infrastructure management is decoupled from service management to achieve maximized flexibility and improved resource utilization efficiency. On the other hand, network virtualization raises new issues, such as challenges in efficient provisioning of end-to-end services, scalable management and control of virtual and physical resources, independent programmability of virtual networks, and reliable traffic isolation in multi-tenant deployments.In the meantime, there is growing need for comprehensive virtual network solutions that provide built-in Network Functions Virtualization (NFV) and Service Function Chaining (SFC) capabilities. In addition, the network functions contained in these services may span across multiple datacenters (e.g., NFV infrastructure such as central offices with servers/storage, customer/enterprise sites with single/few servers) interconnected by packet and/or optical networks for cost/performance optimization, and therefore require end-to-end networking as well as service function chaining. Currently such network service deployments require multiple controllers to manage each segment of the NFV/SDN service, thereby making it difficult to provide end-to-end per-tenant service orchestration without an integrated platform.In this paper, we present a NaaS orchestration platform called the Software-Programmed Networking Operating System (SPN OS) for NFV/SDN integrated service provisioning over packet/optical networks. We also report a running prototype of the SPN OS demonstrating key features including multi-datacenter dynamic NFV/SDN service deployment and high-level network programming-driven packet and optical network control/management.

Reducing latency is a major challenge for current telecommunications systems. 5G networks are envisioned to achieve end-to-end latencies below 1 ms, thus enabling the Internet of Things (IoT) evolution and new applications such as Tactile Internet. In this article, we present a new procedure to measure real time latency in hybrid optical-wireless links. We obtained 2 ms end to end latency using Software Defined Radio to measure latency in a physical setup. We tested the procedure on W-band fiber-wireless link and validated the results against PING over GRE tunnel.

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