The first phase of this new 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. A 100 GbE service was provisioned across the multi-layer network comprising of Brocade® MLXe Core Routers and additional OpenFlow-enabled Layer 2 switches connected over a virtualized transport network consisting of three Infinera DTN-X platforms, each running
The second phase of the demonstration focused on multi-layer network optimization and demonstrated how proactive detection of increasing bandwidth of packet flows could trigger OSCARS to dynamically re-route the large flow to bypass an intermediate packet switch/router. This approach leverages SDN to maximize the use of the intelligent DTN-X transport layer with integrated switching to minimize transit traffic carried at the router layer. Automated multi-layer optimization analyzes 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.
"This pioneering demonstration showcases the value of an Intelligent Transport Network combined with SDN control," said
"We believe the ability for the network to quickly and nimbly handle large data flows at the most cost-effective layer of the network is one of the key value drivers for SDN," said ESnet Chief Technologist Inder Monga. "Being able to provision and optimize the network across both the router and transport layers from a single console using our OSCARS platform and open standards-based protocols is very attractive to ESnet."
OSCARS contains algorithms for multi-layer provisioning, topology modeling and path computation that have been developed as part of DOE-funded network research. With OSCARS leveraging Floodlight's RESTful application programming interfaces (API), the open source controller is able to discover and provision network elements at both the packet and transport layers via the OpenFlow protocol.
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