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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 29, Iss. 6 — Mar. 15, 2011
  • pp: 916–924

Integrated Restoration for Next-Generation IP-Over-Optical Networks

Angela L. Chiu, Gagan Choudhury, Mark D. Feuer, John L. Strand, and Sheryl L. Woodward

Journal of Lightwave Technology, Vol. 29, Issue 6, pp. 916-924 (2011)

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This paper describes work performed for the Defense Advanced Research Projects Agency CORONET-funded Protocols and Architectures for Resilient Agile Global Optical Networks project to build an integrated IP/optical layer (OL) restoration architecture that combines transponder-shared mesh restoration at the OL with innovative methods of using router line cards and OL reconfigurability to restore from a layer 3 outage. This is a significant advancement over current restoration strategies, which typically add significant additional layer 3 capacity (i.e., additional IP links) to allow all failures to be restored at layer 3 alone. The network and restoration architectures in the integrated restoration method are described, as are design methodologies for each layer. A realistic cost model is applied to demonstrate that the proposed integrated IP/OL restoration strategy may have significant cost advantages for a core IP network when compared to the commonly used restoration strategies today.

© 2011 IEEE

Angela L. Chiu, Gagan Choudhury, Mark D. Feuer, John L. Strand, and Sheryl L. Woodward, "Integrated Restoration for Next-Generation IP-Over-Optical Networks," J. Lightwave Technol. 29, 916-924 (2011)

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