Research on the Influence of Different Network Topologies on Cache Performance for NDN

Abstract

Named Data Network (NDN) is one of the most promising future Internet architectures and replaces the “thin waist” of TCP/IP hourglass model with the named data. Because all routers in the NDN network can cache contents passing by, users can obtain content from routers who cache the content without going to the remote server. Therefore, NDN greatly reduces network traffic and improves the speed of content distribution and retrieval. In this study, we focus on the impact of network topology on NDN cache performance. We utilize a dynamic popularity-based cache permission strategy for NDN which is called DPCP, take five different network topologies into account, and observe the influence on DPCP. The simulation experiments show that the DPCP strategy has the best cache performance in the nine-grid network topology with single-user and single-server and the 16-square grid network topology with single-user and single-server.