The Emerging Control Hierarchy for Service Provider SDN-Enabled Networks

This white paper examines how the control hierarchy for SDN networks is converging toward a three-tier structure, with a service orchestrator, a network controller, and multiple domain controllers. The benefits are plenty, including faster innovation, a stable ecosystem of collaborating parties, and flexibility to replace building blocks with minimal effort and without vendor lock-in.

NetFusion Discovery System Description

This white paper describes the NetFusion Intelligence and Automation App Platform, which enables multivendor discovery of the Optical layer, IP/MPLS layer, and cross-connections between the two layers. The accompanying NetFusion Explorer UI enables you to visualize and explore this multi-layer network model in near real-time, showing optically-aware IP/MPLS routing and conversely, IP/MPLS-informed optical paths.

Multilayer Requirements for NBI of Optical Domain Controllers

This paper focuses on requirements for the NBI of Optical domain controllers in a multilayer architecture. The NBI of the optical domain controller has four main functions: topology discovery, monitoring, provisioning, and path computation. These requirements generally apply to both DWDM and OTN systems, with the obvious omission of feasibility limitations that only apply to the DWDM layer.