Link inference in the presense of load balancing

Abstract

In this paper, the problem of false traceroute links caused by load balancing is analysed and formulated. To solve this problem, the authors proposed a novel reliable assumption called the Last Link Assumption based on a fact that neglected by most researchers. The limitations of proposed assumption is analysed and presented. Then, the authors proposed an effective probing algorithm called the Last Link Inference Algorithm based on the proposed assumption. After that, the effectiveness of proposed algorithm for link inference in the presence of symmetric and asymmetric per-packet load balancing is demonstrated by comparing the topology measurement results of experimental networks with classic traceroute and Paris traceroute. The support rate of proposed algorithm in the Internet environment could reach 87.5% according to our topology measurement experiment.