关键词: 网络断层扫描, 网络拓扑推测, 报文丢失, 多播

Abstract: Network identification is the proposition of the network link-level performance inference.The present methods rely on the network performance，but the time spent on the identification increases as the size of the network，which may restrict the technique to be used in practice.To overcome the above problems，we propose a fast approach to identify the logical network topology in this paper.The proposed method only needs to calculate the similarity degree based on the measurements to identify the network topology，which can accurately identify the network topology and save more time than the present ones.We also implement the proposed algorithm in a simulated network and validate its accuracy and efficiency.

Key words: network tomography, network topology identification, loss performance, multicast