Multi-ISP cooperative cache sharing for saving inter-ISP transit cost in content centric networking

Kazuhito Matsuda, Go Hasegawa, Masayuki Murata

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Content-Centric Networking (CCN) has an in-network caching mechanism, which can reduce the traffic volume along the route to the destination host. This traffic volume reduction on the transit link can decrease inter-ISP transit cost. However, the memory space for caching in CCN routers is small relative to content volume. In addition, any initial access to the content requested by a user must use the transit link, even when a nearby CCN router outside the route has the cached content. In this paper, we propose a method of cooperative cache sharing among CCN routers in multiple ISPs. It aims to attain a further reduction in the inter-ISP transit cost by improving the cache hit ratio. In the proposed method, the CCN routers share the memory space for caching of non-overlapping cache content. We evaluate the proposed method by simulation experiments using the IP-level network topology of actual ISP, and show that the inter-ISP transit traffic can be reduced by up to 28% compared with normal caching behavior of CCN.

Original languageEnglish
Pages (from-to)621-629
Number of pages9
JournalIEICE Transactions on Communications
Issue number4
Publication statusPublished - 2015 Apr 1
Externally publishedYes


  • Cache sharing
  • Content-Centric Networking
  • In-network caching
  • Inter-ISP transit cost

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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