Distributed optimization of converged IP-optical networks

Anwar Elwalid, Debasis Mitra, Qiong Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The Internet transport infrastructure is moving towards a model of high-speed router networks that are directly interconnected by re-configurable optical core networks. This IP over Optical (IPO) architecture, when coupled with the emerging IP-based Generalized Multi-Protocol Label Switching (GMPLS) control plane, offers network operators opportunities for dynamic, multi-layer optimization of traffic engineering. We present a novel approach for joint optical network provisioning and IP traffic engineering, in which the IP and optical network domains collaboratively achieve the objective of maximizing the benefit of carrying end-to-end IP traffic at the minimum lightpath design cost. Our approach is developed under the Overlay inter-networking model with each network having a limited view of the other. The cooperation is achieved through minimal information exchange. Our solution is based on a novel application of Generalized Bender's Decomposition to implement distributed, multi-layer optimization. The process converges to the optimal value of the objective function. A case study is presented to illustrate the proposed method.

Original languageEnglish (US)
Title of host publicationGLOBECOM'05
Subtitle of host publicationIEEE Global Telecommunications Conference, 2005
Number of pages6
StatePublished - 2005
Externally publishedYes
EventGLOBECOM'05: IEEE Global Telecommunications Conference, 2005 - St. Louis. MO, United States
Duration: Nov 28 2005Dec 2 2005

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference


OtherGLOBECOM'05: IEEE Global Telecommunications Conference, 2005
Country/TerritoryUnited States
CitySt. Louis. MO

ASJC Scopus subject areas

  • Engineering(all)


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