Abstract
We present a novel approach for joint optical network provisioning and Internet protocol (IP) traffic engineering, in which the IP and optical networks collaboratively optimize a combined objective of network performance and lightpath provisioning cost. We develop a framework for distributed multilayer optimization. Our framework is built upon the IP-over-optical (IPO) overlay model, where each network domain has a limited view of the other. Our formulation allows the two domains to communicate and coordinate their decisions through minimal information exchange. Our solution is based on a novel application of Generalized Bender's Decomposition, which divides a difficult global optimization problem into tractable subproblems, each solved by a different domain. The procedure is iterative and converges to the global optimum. We present case studies to demonstrate the efficiency and applicability of our approach in various networking scenarios. Our work builds a foundation for "multilayer" grooming, which extends traditional grooming in the optical domain to include data networks. The data networks are active participants in the grooming process with intelligent homing of data traffic to optical gateways.
Original language | English (US) |
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Article number | 1665004 |
Pages (from-to) | 1502-1513 |
Number of pages | 12 |
Journal | IEEE Journal on Selected Areas in Communications |
Volume | 24 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2006 |
Externally published | Yes |
Keywords
- Capacity expansion
- Cooperative internet-working
- Data-optical network
- Distributed control
- Generalized multiprotocol label switching (GMPLS)
- Nonlinear integer optimization
- Optical grooming
- Traffic engineering
- Wavelength
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering