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Resource Optimization based Dynamic Mapping Algorithm for Survivable IP over WDM Network
YI Lang 1 #,HUANG Shanguo 2 *,GUO Bingli 2,ZHANG Jie 2,GU Wanyi 2
1.State key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications, Beijing 100876
2.State key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications,Beijing 100876
*Correspondence author
#Submitted by
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Funding: none
Opened online: 1 December 2011
Accepted by: none
Citation: YI Lang,HUANG Shanguo,GUO Bingli.Resource Optimization based Dynamic Mapping Algorithm for Survivable IP over WDM Network[OL]. [ 1 December 2011] http://en.paper.edu.cn/en_releasepaper/content/4451873
 
 
As the dynamic mapping is critical in IP-over-WDM (Wavelength Division Multiplexing) network to ensure the restorability of IP layer, supplying survivability in network is of vital importance for dynamic traffic. However, the survivable mapping problem is complicated and difficulty in dynamic traffic scenario. Several factors can influence the performance of schemes for survivable mapping: The connectivity of topology; Amount of nodes in topology; Computing complexity and scalability of mapping algorithm. In this paper, we study the impact of light-path routing regarding network survivability and preserved capability. In IP-over-WDM network, light-paths are routed on physical topology so that a single fiber cut can cause multiple logical link failures. We propose a real-time survivable mapping algorithm in dynamic traffic scenario. Moreover, a new independent path sets calculation method is presented in order to support the proposed algorithm. At last, simulations are carried out to evaluate the efficiency and scalability of the proposed algorithm in terms of the resource utilization and blocking probability for single link failure. The results of simulations show that the proposed algorithm offers significant improvement of survivability for IP topology.
Keywords:Fibre Optical Communication Technology; IP-over-WDM Networks; Dynamic Survivable Mapping; Network Survivability
 
 
 

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