Survivability in multi-domain optical networks using p-cycles |
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Authors: | Hamza Drid Samer Lahoud Bernard Cousin Miklós Molnár |
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Affiliation: | (1) Department of Computer Engineering and Industrial Automation (DCA), Electrical Engineering Faculty (FEEC)-UNICAMP, 13083-970 Campinas, Brazil;(2) Institute of Computing (IC-UNICAMP), 13084-971 Campinas, Brazil;(3) Ericsson Research, Torshamnsgatan 23, 16480 Stockholm, Sweden |
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Abstract: | Survivability is becoming an important issue in optical networks due to the huge bandwidth offered by optical technology.
Many works have studied network survivability. The majority of these works are destined for single-domain networks. In this
work, we address the survivability of multi-domain optical networks. This paper provides a classification of the existing
protection solutions proposed for multi-domain networks and analyses their advantages and limitations. We propose a new solution
for multi-domain optical networks based on p-cycles (pre-configured cycles). For scalability and security reasons, we also
propose a topology aggregation model adapted to p-cycle computations. This aggregation model allows our proposed solution
to find a trade-off between two competing goals: efficient use of backup resources and short running time. Simulation results
show that the proposed solution is a good trade-off between resource utilization and running time compared to existing solutions. |
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