Scientific research shows an ever-growing demand for more and higher quality network services. In 2001 the idea began
to take hold at SURFnet that we had reached the boundaries of using ever faster connections and ever larger routers to
satisfy this demand and that the heavy scientific utilisation of the network posed a growing risk for regular Internet
traffic. SURFnet concluded that a simple extrapolation of then current layer3 networks would most likely not be the right
answer. This presentation describes how SURFnet started to explore end-to-end lightpath provisioning as an alternative.
This exploration has led to the realisation of SURFnet6 as a hybrid optical and packet switching infrastructure,
NetherLight as an Open Lightpath Exchange and GLIF as a global facility for lambda networking.
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