Expansion of bandwidth-on-demand capabilities in Japanese academic backbone network

This paper describes the progress made in improving the bandwidth-on-demand (BoD) capabilities of the Japanese academic backbone network called SINET3. Since the start of layer-1 BoD services in 2008, we have expanded the service provision area nationwide, introduced functions to improve the usability in response to user requests, and flexibly managed the network resources by taking into account a hybrid accommodation of the layer-1 and layer2/3 services. We are also approaching layer-2 BoD services for applications requiring a relatively small amount of bandwidth. The current status for layer-1 BoD services and the near-future plan for layer-2 BoD services including the initial implementation image are described.