2013 R&D 100 Winner
Modern, large-scale science requires high-bandwidth, reliable networks that interconnect globally distributed instruments, facilities and collaborators, allowing them to function as if they are one system in one location. This isn’t always possible, so to ensure that scientists can reliably meet the time-critical needs of their research, Lawrence Berkeley National Laboratory’s Energy Sciences Network (ESnet) developed the On-demand Secure Circuits and Advance Reservation System (OSCARS) 0.6.

This open-source software allows scientists and network operators to create and reserve bandwidth channels, called “virtual circuits,” with guaranteed end-to-end performance. These circuits are tuned for exchanging data sets among collaboration sites that can be located across multiple network domains. Through a Web interface, the user can define the virtual circuit’s end points, specifying the amount of bandwidth needed and the time and date when the bandwidth is required. OSCARS authenticates and authorizes the user, then determines the optimal path for the user’s bandwidth based on available network resources. The scalable path-computation engine in OSCARS determines the path by taking into account multiple factors such as resource availability and latency of the network links.


Lawrence Berkeley National Laboratory

Development Team

The On-demand Secure Circuits and Advance Reservation System (OSCARS) Development Team from Lawrence Berkeley National Laboratory
Chin Guok, Principal Developer
Evangelos Chaniotakis
Andrew Lake
Eric Pouyoul
Mary Thompson