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Optical grids are widely deployed to solve complex problems we are facing today. An important aspect of the supporting network is resiliency i.e. the ability to overcome network failures. In contrast to classical network protection schemes, we will not necessarily provide a back-up path between the source and the original destination. Instead, we will try to relocate the job to another server location...
Fast recovery from failures and overall high utilization of network capacity are two primary goals of network survivability design. Shared backup path protection has been shown to be efficient in terms of capacity utilization, due to the sharing capability among protection paths. However, the resulting integer linear programming (ILP) formulation of the problem is known to be NP-hard. This paper tackles...
Demand-wise shared protection (DSP) can be thought of as a form of network-level 1:N APS protection scheme. The concept is to split total demand over multiple disjoint routes between each node pair and use one of the routes for protection. Recently referred to as demand-wise shared protection (DSP), this architecture is receiving renewed interest. Especially in high connectivity networks it would...
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