Design And Implementation Of Optical Network Control Plane Based On Centralized Open Control Protocol

Currently, distributed control approaches are widely studied in the optical networks. However, considering a unified control plane is preferred for the optical networks with different switching technologes and also the IP-over-WDM multi-layer networks, the distributed approaches are usually too complicated and may result in low resource utilization if without cross-layer coordination. In light of this, in this paper, we investigate an OpenFlow-based centralized open control architecture suitable for WSON, LOBS optical networks and also LOBS/WSON, IP/LOBS and IP/LOBS/WSON multi-layer networks. The main achievements of this paper can be summarized as follows.1) Investigate an OpenFlow-based control architecture and corresponding signaling scheme for WSON, design and implement an OpenFlow-enabled OXC node capable of optical performance monitoring, and verify the feasibility of OpenFlow control plane by experimental demonstration.2) Investigate an OpenFlow-based control architecture and corresponding signaling scheme for LOBS network, design and implement an OpenFlow-enabled LOBS core node with multicast capability, and verify the end-to-end burst transmission under the OpenFlow control plane.3) Investigate an OpenFlow-based unified control architecture and corresponding signaling scheme for LOBS/WSON multi-granularity network, and experimental demonstration verify its feasibility and the network latency and burst blocking rate is also experimentry evaluated.4) Investigate an OpenFlow-based unified control architecture and corresponding signaling scheme for IP/LOBS multi-layer network, and OpenFlow-controlled multicast service is successfully demonstrated for the first time. In addition, some interesting experimental results on the IP/LOBS/WSON network with OpenFlow control plane is also presented.