Performance analysis of large-scale IP networks considering TCP traffic

Hiroyuki Hisamatsu, Go Hasegawa, Masayuki Murata

Research output: Contribution to journalArticlepeer-review


In this paper, we propose a novel analysis method for large-scale networks with consideration of the behavior of the congestion control mechanism of TCP. In the analysis, we model the behavior of TCP at end-host and network link as independent systems, and combine them into a single system in order to analyze the entire network. Using this analysis, we can analyze a large-scale network, i.e. with over 100/1,000/10,000 routers/hosts/links and 100,000 TCP connections very rapidly. Especially, a calculation time of our analysis, it is different from that of ns-2, is independent of a network bandwidth and/or propagation delay. Specifically, we can derive the utilization of the network links, the packet loss ratio of the link buffer, the round-trip time (RTT) and the throughput of TCP connections, and the location and degree of the network congestion. We validate our approximate analysis by comparing analytic results with simulation ones. We also show that our analysis method treats the behavior of TCP connection in a large-scale network appropriately.

Original languageEnglish
Pages (from-to)2845-2853
Number of pages9
JournalIEICE Transactions on Communications
Issue number10
Publication statusPublished - 2007


  • Fluid flow approximation
  • Large-scale network
  • TCP (transmission control protocol)


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