DNS Traffic Analysis — CDN and the World IPv6 Launch

• Fujiwara Kazunori

  University of Tsukuba Japan Registry Services Co., Ltd.

• Sato Akira

  University of Tsukuba

• Yoshida Kenichi

  University of Tsukuba

Abstract

The Domain Name System (DNS) is a key naming system used in the Internet. Recently, the deployment of IPv6 (especially after the World IPv6 Launch) and DNS prefetching in web browsers has significantly changed DNS usage. Furthermore, content delivery networks (CDNs) use complicated DNS configurations together with small TTL values to control their traffic. These three factors significantly increase DNS traffic. Thus, the importance of DNS traffic analysis has been increasing to properly maintain DNS operations. This paper presents an analysis of DNS full resolver traffic at the University of Tsukuba in Japan. What we found are 1) The deployment of IPv6 has increased queries from clients as much as 41%, 2) The deployment of CDNs increases the use of small TTL values, the use of CNAME resource records and the use of out-of-bailiwick DNS server names. Since these increases are making the DNS cache hit rate low and the DNS response slow without recognition by Internet users, this paper seeks to warn application designers of potential system design risks in current Internet applications.

Journal

• Information and Media Technologies

  Information and Media Technologies 8 (3), 833-842, 2013

  Information and Media Technologies Editorial Board

Keywords

• DNS
• IPv6
• CDN
• content delivery network

Details

• CRID: 1390001205264625664
• NII Article ID: 130003367001
• DOI: 10.11185/imt.8.833
• ISSN: 18810896
• Text Lang: en
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed