Survivability in multi-technology networks is of crucial interest to service providers planning to offer customers end-to-end solutions with well-defined and consistent levels of service quality. A major objective driving the emergence of innovative protection architectures is to provide a service provider with design choices for achieving a balance between efficient bandwidth utilization, network and services survivability, and network manageability. Given the plethora of multi-technology architectures and approaches to protection that are under consideration in the industry, a service provider is faced with a complex task in developing a network survivability strategy that supports its business needs and that can in turn be supported by network products and management systems from suppliers.
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