A novel segment-shared protection algorithm based on dynamic domain-sequencing scheme for multi-domain optical mesh networks |
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Authors: | Shengfeng Zhang Shu Du Yunfeng Peng Xiaolong Yang Keping Long |
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Affiliation: | (1) Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 87131, USA;(2) Wuhan University, Wuhan, People’s Republic of China;(3) Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134, USA |
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Abstract: | Survivability has been widely recognized as an important design issue for optical networks. In practice, as the network scale
keeps expanding, this design problem becomes more critical. Due to scalability and domain privacy, designing the protection
scheme in multi-domain networks is more difficult than that in single domain networks. The path computation element (PCE)
is known as an efficient architecture to compute optimal traffic engineering (TE) paths in multi-domain multilayer networks.
Based on the PCE architecture, we first propose a new dynamic domain-sequencing scheme that considers the load balance of
inter-domain links and then propose an improved segment-shared protection approach called DDSP. It can provide 100% protection
ability for multiple failures that each single domain has only one failed link. Finally, the protection based on the optimal
dynamic domain-sequencing scheme, called OPT, is designed, to evaluate performance of our algorithm and to provide the good
bounding for the dynamic domain-sequencing scheme with limited intra TE information. Simulation evaluation shows that the
proposed scheme is effective in multi-domain path protection with more efficient resource utilization, lower blocking probabilities
and less inter-domain cost. Furthermore, the performance of it is near to OPT. |
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