[CAnet - news] Excellent paper on evolution of optical and hybrid networks

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The Ongoing Evolution from Packet Based Networks to Hybrid Networks in
Research & Education Networks

http://www.jinr.ru/NEC/NEC-2005/proceeding2005/Martin.doc

http://www.ictconsulting.ch/reports/NEC2005.doc 

Abstract:

The ongoing evolution from packet based networks to hybrid networks in
Research & Education (R&E) networks, or what are the fundamental reasons
behind this fundamental paradygm shift and the resulting growing gap between
commercial and R&E Internet networks?

As exemplified by the Internet2 HOPI initiative, the new GEANT2 backbone,
the GLIF  initiative and projects such as Dragon and Ultralight, National
Research and Education Network (NREN) infrastructures are undergoing several
very fundamental evolutions moving from conventional Packet based Internet
networks to Hybrid networks while also moving from commercial Telecom
Operator networks to Customer Empowered, dark fiber based, networks.

By hybrid networks, we mean the combination of conventional packet based
Internet networks coupled with the capability to dynamically establish high
speed End-to-end circuits, i.e. Bandwidth on Demand (BoD), also referred to
sometimes as "lambda Grids", 

This paper is attempting to explain the fundamental reasons behind this very
significant paradygm shift and to assess its likely impact on National R&E,
while also giving a very brief overview on what next generation Optical
Transport Networks (OTN) may look like in a few years time with the advent
of Ethernet over SONET/SDH (EoS), Generic Framing Procedures (GFP), Virtual
Concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS).



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