Session Abstract

Recently, 100 Gbps ultra-high-speed IP networks have become familiar, which enables various applications such as Ultra-HD video streaming of uncompressed form. However, it's very tough to secure the large bandwidth of over 6 Gbps, because we are sharing the network bandwidth among a huge number of users. In order to establish a network connection for the uncompressed 4K streaming at any time, we need to carefully select and aggregate multiples of well-conditioned network links. In order to transmit uncompressed 4K videos on R&E networks, we developed a special virtualized network using multipath transmission links on Internet2. This virtualized network can be controlled by OpenFlow/SDN switches, very powerful tools installed in some locations in USA, and can be controlled by application users. Finding the preferred links by monitoring the conditions, they are aggregated and virtualized into a single link for the uncompressed 4K streaming. We call this system "Dynamic SDN" that makes use of Network Address Translation (NAT) based overlay SDN technology.

During the 2015 Technology Exchange, 6 Gbit/s uncompressed 4K videos are being transmitted to the demo booth from Japan and Brazil, each of which are divided into 4 HD video streams traveling via 4 different locations in US. In each location, one of HD (quadrant of 4K) video is selected by Lagopus OpenFlow software switches to reach the Internet 2 venue, to show 4K video where 4 quadrants are completely synchronized regardless of traveling time difference between 4 streams.