eFRADIR: An Enhanced FRAmework for DIsaster Resilience

This paper focuses on how to increase the availability of a backbone network with minimal cost. In particular, new framework resilience against natural disasters and is an evolution FRADIR/FRADIR-II framework. It targets three different directions, namely: planning, failure modeling, survivable routing. The steady state planning tackled by upgrading sub-network (a set links termed spine) achieve targeted threshold. A two-stage approach proposed: heuristic algorithm combined mixed-integer linear problem optimize upgrade To tackle disaster-resilient problem, integer program presented for optimal link intensity tolerance upgrades together efficient scheme reduce running time. Failure modeling improved considering more realistic disasters. we focus earthquakes using historical data epicenters moment magnitudes. joint probabilities multi-link failures are estimated, shared risk groups defined. routing aims improve network’s connectivity during these group failures. Here, generalized dedicated protection used protect all listed Finally, experimental results demonstrate benefits refined eFRADIR in event guaranteeing low disconnection even large-scale