A two-stage simulated annealing logical topology reconfiguration in IP over WDM networks

Sugang Xu*, Kaoru Sezaki, Yoshiaki Tanaka

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


WDM optical networks represent the future direction of high capacity wide-area network applications. By creating optical paths between several nodes in the core networks, a logical topology can be created over the physical topology. By reconfiguring the logical topology, network resource utilization can be optimized corresponding to traffic pattern changes. From the viewpoint of network operation, the complexity of reconfiguration should be minimized as well. In this paper we consider the logical topology reconfiguration in arbitrary topology IP over WDM networks with balancing between network performance and operation complexity. The exact formulation of the logical topology reconfiguration problem is usually represented as Mixed Integer Linear Programming, but it grows intractable with increasing network size. Here we propose a simulated annealing approach in order to both determine the target topology with a smaller logical topology change and also satisfy the performance requirement. A threshold on the congestion performance requirement is used to balance the optimal congestion requirement and operation complexity. This is achieved by tuning this threshold to a feasible value. For effective solution discovery, a two-stage SA algorithm is developed for multiple objectives optimization.

Original languageEnglish
Pages (from-to)2483-2493
Number of pages11
JournalIEICE Transactions on Communications
Issue number6
Publication statusPublished - 2005 Jun
Externally publishedYes


  • IP over WDM network
  • Logical topology reconfiguration
  • Simulated annealing

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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