Application of attractor selection to adaptive virtual network topology control
Proceedings of the 3rd International Conference on Bio-Inspired Models of Network, Information and Computing Sytems
Robust virtual network topology control based on attractor selection
ONDM'09 Proceedings of the 13th international conference on Optical Network Design and Modeling
Alternate multihop routing in limited reconfigurable optical networks
INFOCOM'09 Proceedings of the 28th IEEE international conference on Computer Communications Workshops
Cooperation among multiple virtual topologies based on attractor superimposition
ONDM'10 Proceedings of the 14th conference on Optical network design and modeling
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This paper focuses on dynamic integrated routing in multifiber Internet protocol/wavelength-division multiplexing (IP/WDM) networks, which can be implemented through either one-step routing (OSR) or two-step routing (TSR) approach. Based on an extended layered-graph, two resource assignment strategies, termed channel-level balance (CLB) and link-level balance (LLB), are proposed to balance the traffic in the network at different levels. To further improve the performance, a parameter K is introduced to make a dynamic tradeoff between the logical-layer links and the optical-layer links. Simulation studies are carried out for various topologies. The results show that LLB is better than CLB in most cases, and LLB combined with OSR has the optimal performance. Also, we find that the routing approach and the resource assignment strategy individually play different roles with different values of rl that is introduced to indicate the resource richness of the network. As a multifiber network is functionally equivalent to a single-fiber network with limited wavelength conversion, we investigate the effects of wavelength conversion by studying the multifiber IP/WDM networks. The analysis shows that, when the granularity of each connection request is much smaller than the wavelength granularity, wavelength conversion may increase the request blocking probability in the network.