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

Abstract

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.

Power-aware network systems using adaptive optical path control for large-scale multi-layer service networks

“…The ratios between them in 2009 were about 2.9 for the downloaded traffic and about 2.2 for the uploaded traffic. Japanese academic backbone networks also have similar traffic patterns and their traffic peaks are between 2 to 5 PM [5]. In addition, we note that these traffic show very analogous daily patterns.…”

“…In other words, the wavelength paths, which are the sub-paths belonging to an optical path, are dynamically setup or released depending on the network traffic patterns and volumes. We think this dynamic path control is also used for new optical end-to-end transfer services such as bandwidth-on-demand services [5].…”

“…We assumed that the aggregate traffic volume from 22:00 to 08:00 is half that from 08:00 to 22:00. Here, we used the resource allocation time frame for the Japanese academic backbone network [5]. Figure 8 that the most effective node power consumption was reduced by a total of 27% for the four-core-node model and 44% for the six-core-node model at the power consumption percentage of 70% for packet processing when we changed the assigned network resources according to the specified time frame.…”