Mohammadreza M. Models and methods of estimation and optimization of survivability indexes in MPLS computer networks

The dissertation is dedicated to development and investigation of models, methods and algorithms for analysis and optimization of MPLS networks survivability. Survivability indexes for MPLS networks are suggested and a method of their estimation and analysis was elaborated. The problem of MPLS networks optimization by survivability indexes was formulated and the corresponding method for its solution was elaborated which enables to find optimal structure of channels and nodes reservation by cost criterion under constraints on established QoS. Optimal reconfiguration problem for MPLS networks under failure of its elements is formulated and method of its solution was suggested,.Maximal weighted flow problem in MPLS networks was formulated and the properties of optimal solution were investigated. The method of maximal weighted flow finding was elaborated The implementation of the suggested methods and algorithms was fulfilled and experimental investigations of their efficiency were carried out.