Study on integrated routing in IP-over-WDM networks

Tong Ye; Qingji Zeng; Zhizhong Zhang

doi:10.1117/12.533815

1 October 2003 Study on integrated routing in IP-over-WDM networks

Tong Ye, Qingji Zeng, Zhizhong Zhang

Proceedings Volume 5285, OptiComm 2003: Optical Networking and Communications; (2003) https://doi.org/10.1117/12.533815
Event: OptiComm 2003: Optical Networking and Communications, 2003, Dallas, TX, United States

Abstract

The problem of integrated routing in multifiber IP over WDM networks is studied in this paper. To solve this problem, a layered-graph is constructed and an algorithm, called integrated cost-based shortest path (ICSP) algorithm, is then proposed. ICSP can not only balance the traffic uniformly but also make a dynamic tradeoff between all the links in the layered-graph. A parameter r_l is introduced to characterize the resource richness of an IP over WDM Network. Simulation results show that ICSP outperforms other algorithms significantly in terms of blocking probability in all the cases we studied, and the performances of other algorithms are affected by r_l greatly. Because a multifiber network can be functionally equivalent to a single fiber network with limited wavelength conversion (WC), we make the first known attempt to investigate the impact of WC on dynamic integrated routing by studying the multifiber networks. Results show that the effect of WC depends on the granularities of label switched path (LSP) requests. If the granularity of each request is large, WC will improve the network performance; if the granularity of each request is small, WC will worsen the performance.

Citation Download Citation

Tong Ye, Qingji Zeng, and Zhizhong Zhang "Study on integrated routing in IP-over-WDM networks", Proc. SPIE 5285, OptiComm 2003: Optical Networking and Communications, (1 October 2003); https://doi.org/10.1117/12.533815

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