An effective dynamic reconfiguration algorithm for IP over WDM networks

Hongfang Yu; Tao Zhou; Sheng Wang; Lemin Li

doi:10.1117/12.576258

8 February 2005 An effective dynamic reconfiguration algorithm for IP over WDM networks

Hongfang Yu, Tao Zhou, Sheng Wang, Lemin Li

Proceedings Volume 5626, Network Architectures, Management, and Applications II; (2005) https://doi.org/10.1117/12.576258
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

Abstract

WDM (Wavelength Division Multiplexing) technology can provide multiple wavelengths on a fiber. IP directly over WDM (or IP over WDM) has become the hot topic of industry. A promising approach for building an IP over WDM network is that a logical network consisting of the wavelength channels (lightpaths) is built on the physical WDM network. Then, IP traffic is carried on the logical topology, by utilizing the MPLS (Multiple Protocol Label Switching) or GMPLS (Generalized MPLS). When the traffic demand pattern changes in the IP layer, the network performance may become poor. In order to improve the network performance, the virtual topology can be reconfigured to suit the changing traffic patterns. In this paper, dynamic slowly-adaptation scheme (e.g. tearing down a lightpath that is lightly loaded or setting up a new lightpath when congestion occurs) is adopted. How to select the source and the destination nodes of the new lightpath to be added and the underutilized lightpath to be deleted if it is necessary to do so is our key issue. Four selection ways are developed. These ways are evaluated through detail simulations and various performances are investigated.

Citation Download Citation

Hongfang Yu, Tao Zhou, Sheng Wang, and Lemin Li "An effective dynamic reconfiguration algorithm for IP over WDM networks", Proc. SPIE 5626, Network Architectures, Management, and Applications II, (8 February 2005); https://doi.org/10.1117/12.576258

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