Mobility

Optical IP Switching: A Flow-Based Approach to Distributed Cross-Layer Provisioning

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Executive Summary

Technological improvements, like EDFAs and WDM, have revolutionized optical transmission, boosting the development and worldwide deployment of the Internet. Similar progress has not yet impacted the routing layer, as current IP routing technology struggles to deliver the necessary bandwidth at competitive costs. Hybrid electro-optical architectures, where dynamical optical circuit switching is combined with legacy packet routing, have been introduced in the past few years as promising solutions to reduce costs at the IP layer, and to deliver new revenue-generating services and applications.

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