Investigation on fast MPLS restoration technique for a GbE wide area transport network: A disaster recovery case

In this work we report a simulation investigation, based on OPNET code, about the use of fast MPLS restoration procedures in a wide area transport network totally based on the WDM GbE transmission format. Our network models is the Italian transport network and we verified that, by means of the fast MPLS procedures consequent to link failures, we can reach restoration comparable with SDH cases. We also simulated cases of simultaneously failures of two main nodes, representing an example of disaster event, achieving service restoration in very fast times.