Systems, Man & Cybernetics - October 2017 - 42

automatically provisioning end-to-end L2 circuits over NSIenabled domains across the world. In practice, during the
FELIX project, however, it was not easy to establish specific circuits through the AutoGOLE test bed because the
implementation of NSI in some domains was not production ready. FELIX provided invaluable feedback to the
AutoGOLE community in their efforts to improve test-bed
stability. In addition, we identified the need for monitoring
of the NSI infrastructure, both at the multidomain level and
the single-domain level. This monitoring information must
be made available to end users to allow for fast identification of the source of problems when they occur.
Despite the connectivity issues, the decision to use NSI
and AutoGOLE remains a good one. The promise of NSI in
automated provisioning of dynamic circuits still holds and
offers the possibility to use high-quality, high-bandwidth
connections over transcontinental distances in an economic
way. Extending the TNRM to use GRE tunnels over the
Internet considerably enhanced the flexibility of the FELIX
SDI and presents a novel solution to the multidomain federation problem. Even though GRE tunnels cannot provide
the same quality as dedicated circuits, they are generally
more available and provide a way for domains lacking
access to dedicated high-bandwidth dynamic circuits to join
a federated test bed. GRE tunnels are just one example of
network connection technologies that are easily incorporated in the modular design of the FELIX SDI architecture. The
recently evolving network function virtualization (NFV) [15]
concept could also be easily added to the architecture. NFV
converts entire classes of network node functions that can
be chained together to provide services running on virtual
machines [16]. This emerging technology could provide network functions from a virtualization layer in a more flexible,
complex, intelligent manner that will benefit FI, cyberphysical systems, and IoT projects of the future.

Jin Tanaka (tanaka@ote.kddi.com) is with the Global
ICT Engineering Department at KDDI Corporation, Chiyoda-ku, Tokyo, Japan.
Bartosz Belter (bartosz.belter@man.poznan.pl) is with
the Next Generation Networks Department at Poznan´
Supercomputing and Networking Center, Poznan´, Poland.
Tomohiro Kudoh (kudoh@nc.u-tokyo.ac.jp) is with the
Information Technology Center at The University of Tokyo,
Bunkyo-ku, Japan.
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Acknowledgments
This work was supported by the FELIX project of the
National Institute of Information and Communications
Technology, Japan, and the European Union's Seventh
Framework Programme (grant no. 608638).

[10] U. Toseef, A. Zaalouk, T. Rothe, M. Broadbent, and K. Pentikousis, "C-BAS: Certificate-based AAA for SDN experimental facilities," presented at the European Workshop
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About the Authors
Jason H. Haga (jh.haga@aist.go.jp) is with the Cyber-Physical Cloud Research Group at the National Institute of
Advanced Industrial Science and Technology, Tsukuba, Japan.
Carolina Fernandez (carolina.fernandez@i2cat.net) is
with the Distributed Applications and Networks Area at
i2CAT, Barcelona, Spain.
Atsuko Takefusa (takefusa@nii.ac.jp) is with the
Information Systems Architecture Sciences Research Division at the National Institute of Informatics, Chiyoda-ku,
Tokyo, Japan.
Takatoshi Ikeda (ikeda@ote.kddi.com) is with the
Global ICT Engineering Department at KDDI Corporation,
Chiyoda-ku, Tokyo, Japan.
42	

IEEE SYSTEMS, MAN, & CYBERNETICS MAGAZINE Oc tob e r 2017

[12] A. Takefusa, J. Haga, U. Toseef, T. Ikeda, T. Kudoh, J. Tanaka, and K. Pentikousis,
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virtual network functions. [Online]. Available: https://tools.ietf.org/html/draft-felixnfvrg-recursive-orchestration-00




http://www.ict-felix.eu http://groups.geni.net/geni/raw-attachment/wiki/Slice http://groups.geni.net/geni/ http://www.ogf.org/documents/ http://docs.cloudstack.apache.org/en/latest/concepts.html https://ryu.readthedocs.io/en/latest/ https://www.glif.is/resources/ https://tools.ietf.org/html/draft-felix

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