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In IP-over-WDM networks, protection can be offered at the optical layer or at the electronic layer. While optical protection allows fast restoration in case of single link failures (due to, i.e., cable cuts), it does not offer recovery from IP layer failures (e.g., IP router failures). So both optical protection and IP restoration are needed, and requires coordination in order to avoid duplicated...
Providing protection in multi-domain optical networks involves ensuring protection for inter-domain connections. Due to scalability issues, almost all previous studies focused on heuristics for solving their protection models. In this study, we propose a large scale optimization ILP model, which allows the exact solution of quite large instances. The model relies on an hybrid protection scheme where...
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