Abstract
The design of an appropriate physical topology is an important task when planning mesh transport networks. In order to be able to survive span or node outages, it is essential to provide diverse routes. However, the provisioning of edges involves high costs in terms of physical ducts and the equipment with transmission capacity. The growing demand for reliability causes network providers to consider not only single but also dual failure scenarios. This work investigates topology planning with respect to minimum topology cost and total capacity requirements for dedicated and shared path protection against single and dual failures. We develop mathematical models and investigate a case study.
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