19 August 2003 Design of virtual topology reconfiguration of wavelength-routed network
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This paper studies the problem of virtual topology reconfiguration for changing traffic patterns in wavelength-routed network. We formulate it as an optimization problem, which tries to find out the virtual topology with least lightpath changes with network performance within given bound, when traffic demand imposed on wavelength-routed network changes. Average Packet Hop Count (APHD) is used to measure the degree of network performance. A linear formulation is presented and solved by MILP (Mixed Integer Linear Programming) method. Then we analyze the relationship between lightpath changes and degradation degree of performance. It can be seen that a large cost reduction for reconfiguration can be achieved by giving up a small amount of network performance.
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Fengqing Liu, Fengqing Liu, Qingji Zeng, Qingji Zeng, Xu Zhu, Xu Zhu, "Design of virtual topology reconfiguration of wavelength-routed network", Proc. SPIE 5247, Optical Transmission Systems and Equipment for WDM Networking II, (19 August 2003); doi: 10.1117/12.510885; https://doi.org/10.1117/12.510885

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