• Title/Summary/Keyword: Virtual Topology Adaptation

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Distributed Virtual Topology Adaptation Method to Support IP Traffic in WDM Mesh Networks (WDM Mesh 네트워크에서 IP 트래픽을 수용하기 위한 분산형 가상토폴로지 적응 기법)

  • Kim, Eal-Lae;Lee, Sung-Kuen;Lee, Yong-Won;Chang, Sun-Hyok;Lee, Myung-Moon;Park, Jin-Woo
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.32 no.1B
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    • pp.1-10
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    • 2007
  • We propose a new approach to accommodate bidirectional asymmetric traffic demands as well as unexpected dynamic internet traffic variation in the WDM mesh network by using optical networking technologies. In the proposed scheme, an intermediate node determines the optical path based on the switching statistics of IP router of the node which characterizes the Internet traffic variation, which in effect provides a dynamic and distributed traffic control over the network. It is expected to reduce the efficiency deterioration of RWA(Routing and Wavelength Assignment) due to the real-time variation of Internet traffic so that expandability and flexibility of the network can be enhanced. In this paper, we describe a methodology for traffic behavior analysis at a node, and the decision policy of the establishment/release of optical path. In addition, we evaluate the performance of the proposed scheme through the computer simulations.