Node Degree-Aware Link Cost for Traffic Load-Distribution in Large-Scale Networks

Traffic Engineering (TE) is required for reducing highly-loaded links / nodes in parts of a network, thereby distributing the traffic load in the network. For efficient use of network resources, it is important to efficiently map traffic demands to network resources. Therefore, we should consider an appropriate definition of ``distance\´\´ in networks with the topological features of the network instead of traffic demands. Recent studies have demonstrated a scale-free property of network topology, and node outbound degree distribution is an important factor in the scale-free networks. This paper proposes a new definition of "distance" between two arbitrary communication nodes in the Internet by using node degree information for avoiding congestion in the network. Some simulation results show that the proposed scheme can distribute traffic load from high degree nodes to other nodes, and thus provides robustness of networks.