Dynamic routing and traffic engineering in survivable MPLS networks

The goal of traffic engineering in dynamic routing is to select a single path that satisfies a specified QoS performance metric and optimizes network usage. Since loss of service means loss of revenues, network survivability is one of the most important components of QoS. Our idea is to modify existing dynamic routing algorithms in order to improve performance of the network in terms of survivability. Therefore, we apply our previous approach of a scaling factor based on LFL (lost flow in link) function developed for local repair method. However, in this work we extend our concept by introducing a calibration parameter to the scaling factor. Furthermore, we present a more detailed simulation study of this approach including global repair method. Simulations show that proposed approach can significantly improve network survivability