Analysis of the Hierarchical Characteristics of IP-Level Topology Dynamic Node

Internet is a huge artificial life system. Because it´s topology perplexing and large scale and high complexity in the macro level decide study how to understanding and control internet in macroscopic topological level have important significance. As an important topological features, k-core have attracted the most people´s attention, this article based on the k-core as the main line, analysis the massive data from the CAIDA Ark project, show the hierarchical feature of internet IP level top logy. This article first gives the concept of k- core, followed by the research of the network nodes, Birth Node and Death Node probability distribution of the number of nodes, at the end Soreness of adjacent nodes of birth nodes are discussed.