A routing strategy for multihomed ISP to mitigate the impact of overlay traffic

Xun Shao, Go Hasegawa, Yoshiaki Taniguchi, Hirotaka Nakano

Research output: Contribution to journalArticlepeer-review


Multihoming is widely used by Internet service providers (ISPs) to obtain improved performance and reliability when connecting to the Internet. Recently, the use of overlay routing for network application traffic is rapidly increasing. As a source of both routing oscillation and cost increases, overlay routing is known to bring challenges to ISPs. In this paper, we study the interaction between overlay routing and a multihomed ISP's routing strategy with a Nash game model, and propose a routing strategy for the multihomed ISP to alleviate the negative impact of overlay traffic. We prove that with the proposed routing strategy, the network routing game can always converge to a stable state, and the ISP can reduce costs to a relatively low level. From numerical simulations, we show the efficiency and convergence resulting from the proposed routing strategy. We also discuss the conditions under which the multihomed ISP can realize minimum cost by the proposed strategy.

Original languageEnglish
Pages (from-to)193-201
Number of pages9
JournalIEICE Transactions on Information and Systems
Issue number2
Publication statusPublished - 2013 Feb


  • ISP
  • Multihoming
  • Nash equilibrium
  • Overlay routing
  • Routing game


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