Emulation-based comparative study of centralized and distributed control schemes for optical networks

Chunsheng Xin; Yinghua Ye; Sudhir Dixit; Chunming Qiao

doi:10.1117/12.434441

26 July 2001 Emulation-based comparative study of centralized and distributed control schemes for optical networks

Chunsheng Xin, Yinghua Ye, Sudhir Dixit, Chunming Qiao

Proceedings Volume 4527, Technologies, Protocols, and Services for Next-Generation Internet; (2001) https://doi.org/10.1117/12.434441
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

Recently there are considerable amount of research about the automatic control and provisioning in all optical networks. One of the critical issues is how to provide effective lightpath provisioning to improve network performance, such as blocking probability and decision time. Depending on the network topology, configuration, and administration policy, a distributed or centralized control scheme can be employed to manage the routing and signaling. In a distributed control scheme, each node exchanges information with other nodes, but performs routing and signaling independently from other nodes. On the other hand, in a centralized scheme, each node communicates with a central controller and the controller performs routing and signaling on behalf of all other nodes. Intuitively, the centralized scheme can obtain a lower blocking probability since the controller has the complete resource availability information. We have studied the two schemes through emulations, determined the signaling and processing overheads and quantified the conditions that favor one approach over the other.

Citation Download Citation

Chunsheng Xin, Yinghua Ye, Sudhir Dixit, and Chunming Qiao "Emulation-based comparative study of centralized and distributed control schemes for optical networks", Proc. SPIE 4527, Technologies, Protocols, and Services for Next-Generation Internet, (26 July 2001); https://doi.org/10.1117/12.434441

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