Global resource capacity algorithm with path splitting for virtual network embedding

Network visualization enables support and deployment of new services and applications that the current Internet architecture is unable to support. Virtual Network Embedding (VNE) problem that addresses efficient mapping of virtual network elements onto a physical infrastructure (substrate network) is one of the main challenges in network virtualization. The Global Resource Capacity (GRC) is a VNE algorithm that utilizes for virtual link mapping a modified version of Dijkstra's shortest path algorithm. In this paper, we propose the GRC-M algorithm that utilizes the Multicommodity Flow (MCF) algorithm. MCF enables path splitting and yields to higher substrate resource utilizations. Simulation results show that MCF significantly enhances performance of the GRC algorithm.