A novel distributed VNet mapping algorithm

Network virtualization is seen as the key paradigms for future networks. Many initiatives had been proposed to solve how to implement Network virtualization. This article briefly describes the approaches taken in the 4WARD project to establish VNet, and proposes a novel distributed VNet Mapping algorithm which achieved by substrate nodes and the domain server automatically. The novel Mapping algorithm support different virtual nodes mapping to the same substrate node. We also modified VNet Mapping Protocol for effectively message exchange between substrate nodes and domain server. Through the simulation of results, it is shown that the proposed VNet Mapping algorithm can effectively reduce the number of packets which is needed to exchange information between domain server and substrate node without reducing the delay.