Experimental demonstration of bandwidth on demand (BoD) provisioning based on time scheduling in software-defined multi-domain optical networks

• A hierarchical software defined networking (SDN) control architecture is designed for multi-domain optical networks with the Open Daylight (ODL) controller, and the OpenFlow based Control Virtual Network Interface (CVNI) protocol is deployed between the orchestrator and the domain controllers.
• Dynamic bandwidth on demand provisioning solution is proposed based on time scheduling in SD-MDON.
• A SD-MDON testbed is built based on the proposed hierarchical SDN control architecture, then the time scheduling-based BoD solution (Ts-BoD) with SRLG-disjoint constraint has been experimentally demonstrated on the testbed in different experiment scenarios.

A hierarchical software-defined networking (SDN) control architecture is designed for multi-domain optical networks with the Open Daylight (ODL) controller. The OpenFlow-based Control Virtual Network Interface (CVNI) protocol is deployed between the network orchestrator and the domain controllers. Then, a dynamic bandwidth on demand (BoD) provisioning solution is proposed based on time scheduling in software-defined multi-domain optical networks (SD-MDON). Shared Risk Link Groups (SRLG)-disjoint routing schemes are adopted to separate each tenant for reliability. The SD-MDON testbed is built based on the proposed hierarchical control architecture. Then the proposed time scheduling-based BoD (Ts-BoD) solution is experimentally demonstrated on the testbed. The performance of the Ts-BoD solution is evaluated with respect to blocking probability, resource utilization, and lightpath setup latency.