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Measurements and Laboratory Simulations of the Upper DNS Hierarchy
D. Wessels, M. Fomenkov, N. Brownlee, and k. claffy, "Measurements and Laboratory Simulations of the Upper DNS Hierarchy", in Passive and Active Network Measurement Workshop (PAM), Apr 2004, pp. 147--157.
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Measurements and Laboratory Simulations of the Upper DNS Hierarchy

Duane Wessels
Marina Fomenkov
Nevil Brownlee
kc claffy

CAIDA, San Diego Supercomputer Center, University of California San Diego

Given that the global DNS system, especially at the higher root and top-levels, experiences significant query loads, we seek to answer the following questions: (1) How does the choice of DNS caching software for local resolvers affect query load at the higher levels? (2) How do DNS caching implementations spread the query load among a set of higher level DNS servers? To answer these questions we did case studies of workday DNS traffic at the University of California San Diego (USA), the University of Auckland (New Zealand), and the University of Colorado at Boulder (USA). We also tested various DNS caching implementations in fully controlled laboratory experiments. This paper presents the results of our analysis of real and simulated DNS traffic. We make recommendations to network administrators and software developers aimed at improving the overall DNS system.

Keywords: caching, dns
  Last Modified: Wed Oct-11-2017 17:03:50 PDT
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