Differentiated crosslayer network mapping in multilayered network architectures

The unifying network architecture has contributed to a wave of work on layered network evolution. The undertaking of this paper is twofold: This paper's first-of-its-kind examination of the problems of logical link mapping and traffic flow routing unveils that backhaul traffic, a flow loop that occurs at any lower link layer below the traffic layer except its own, could happen in the traffic flow routing even when no backhaul occurs in the link mapping, prompting our discussion on the investigation of crosslayer survivable link mapping when traffic layers are explicitly considered and survivability is required. In addition to the theoretical treatment on the connection among and between link and traffic layers, a forbidden link matrix is also identified masking part of the network for use in situations where some physical links are reserved exclusively for a designated service, mainly for the context of providing multiple levels of differentiation on the network use. The masking effect is then evaluated on two metrics using two practical approaches in a sample real-world network, showing that both efficiency and practicality can be achieved. ©2010 IEEE