g i r f t y

The California OpenFlow Testbed Network

Network researchers throughout California can carry out OpenFlow-related activities with one another and the larger OpenFlow community via the California OpenFlow Testbed Network (COTN)*. Through OpenFlow, a network switch software which gives researchers the power to modify the behavior of active network devices, innovative routing and switching protocols can be developed and then tested in working networks. Thus, the OpenFlow-enabled COTN will aid California network specialists in the development of tomorrow’s Internet, using today’s networks as a testbed for innovation.

It is expected that a number of other regional networks will develop similar OpenFlow testbeds as a result of this solicitation, allowing for a rich topology of interconnected switches to develop that can facilitate GENI-related research and collaboration nationwide. COTN will thus directly benefit the network research and experiments and new applications invented and developed by the computer scientists and network researchers associated with University of California, Stanford, Caltech, USC, and many other campuses.

Dedicated to OpenFlow Research

COTN is a high-bandwidth (10 Gigabit Ethernet) dedicated research infrastructure spanning California. It deploys OpenFlow-enabled switches into the backbone of CENIC’s CalREN network at Los Angeles, Sunnyvale, and Sacramento and connects with emerging OpenFlow testbeds within the national research networks such as Internet2. Because COTN is colocated with major network Points of Presence (POPs) in California, it can be readily expanded to include connectivity to other testbeds throughout the nation.

COTN is a dedicated, breakable research network. There are no restrictions with regard to configuration control, traffic monitoring, etc., as would be the case in a network with production traffic, nor is there risk that COTN will be negatively impacted by production-related activity elsewhere on the network. Further, by creating a testbed running on the already-in-use CENIC infrastructure, the researchers using the testbed benefit from not having to concern themselves with outages, maintenance, and other issues.

Who Can Use COTN?

COTN is accessible to all CENIC Associates connected to CalREN-HPR, CalREN’s High-Performance Research network tier.

This tier of CENIC’s CalREN network already links California’s research universities where a great deal of GENI-related research and collaboration is taking place. University of California campuses connected by CalREN-HPR have designated faculty researchers in setting up an OpenFlow testbed, including Berkeley, Davis, Merced, Santa Cruz, and San Diego. These researchers operating under the aegis of the Center for Information Technology Research in the Interest of Society (CITRIS) are also collaborating with others at the California Institute for Telecommunications and Information Technology (Calit2) at UC San Diego and UC Irvine, and the Lawrence Berkeley National Laboratories. Other GENI-related research is also being carried out at Stanford University, UCLA, and the University of Southern California.

All interested researchers may contact Brian Court, CENIC’s Director of Network Engineering and Design, at bac@cenic.org to learn how to connect to COTN.

*Supported by NSF award #0944089 for GENI Development and Prototyping (D&P) Infrastructure. COTN was developed in response to a solicitation from the Global Environment for Network Innovation (GENI), an NSF-sponsored virtual laboratory at the frontiers of network science and engineering for exploring future internets at scale. (GENI is supported by NSF award #CNS-0714770.)