OrionA Hybrid Hierarchical Control Plane of.pdf
Abstract—Thedecoupledarchitectureandthefine-grainedflowcontrolfeatureofSDNlimitthescalabilityofSDNnetwork.Inordertoaddressthisproblem,somestudiesconstructtheflatcontrolplanearchitecture;otherstudiesbuildthehierarchicalcontrolplanearchitecturetoimprovethescal