Demand-wise shared protection network design and topology allocation with dual-failure restorability

As availability requirements for core communication networks increase, network survivability models must progress accordingly. Demand-wise shared protection (DSP) is a survivability model developed to blend the efficiency of shared capacity survivability models with the simplicity of dedicated capacity models. This paper proposes and examines a DSP based survivability model that incorporates topology design and dual-failure restorability in order to increase the efficiency and availability of a network. This model was able to produce network topology and capacity designs that efficiently protected a given percentage of traffic for any dual-failure scenario.