A Risk Reduction Approach in Optical Backbone Network

Optical networks are widely used today and in case of any natural disaster, they ensure connectivity. Disaster management schemes proposed in past have many problems associated with them; cost of recovery of fiber being the major one. A small interruption in the optical network results in the loss of large number of data packets during the recovery processes and sometimes the recovery process takes a long time. To address these problems, the low risk failure optical network can be designed by considering the seismic hazard map of India. In this paper, we propose a restoration model to cater the sudden failure in the optical network. New links are added to the network. We have tried to increase the capacity of the safer links and their subsequent physical routes under minimum cost with the aim to reduce the possibilities of failure in the network. The mathematical model for integer linear programming (ILP) for risk aware provisioning scheme has been proposed, the proactive and reactive approach has also been discussed. The proposed scheme reduces the possibility of failure in communication network caused by the disaster.