Optical networking systems provider Infinera and Brocade has successfully demonstrated multi-layer networking using Software-Defined Networking (SDN) technologies, in collaboration with the US Department of Energy's Energy Sciences Network (ESnet). The demonstration showed how SDN can be used to automatically provision services and optimise the use of network resources as traffic demands changes, by increasing or rerouting data centre to data centre interconnect bandwidth services, for example. The first phase of the demonstration leveraged ESnet's On-Demand Secure Circuits and Advance Reservation System (OSCARS) in conjunction with an open source controller to provision services over network elements at both the packet and transport layers via the OpenFlow protocol, using Brocade MLXe Core Routers. The second phase focused on multi-layer network optimisation, which analyses network topology and traffic flows to route traffic at the most cost-effective and energy-efficient layer of the network to save both capital and operational costs. Infinera and Brocade will both attend the SDN and OpenFlow World Congress in Bad Homburg, Germany on 15-18 October.