Gartner Research

Enterprise DNS Architectures and Best Practices

Published: 22 June 2007

ID: G00204057

Analyst(s): Jeff Young


The Domain Name System (DNS) is the backbone service of the Internet; without it, the Internet would cease to function for the majority of its users and for a great many enterprises. In this overview of enterprise DNS architectures and best practices, Burton Group Senior Analyst Jeff Young takes a look at which practices have been adapted from wide area networking, which practices are part of the rich 20-year history of the DNS, and the future functionality that may be coming from the DNS.

Table Of Contents



  • Common Best Practices
    • Security
    • Internal and External Views
    • Off-Site and Outsourcing
    • Availability and Resilience
    • Administrative Practices

The Details

  • DNS Basics
    • Domains
    • Names and Numbers
    • The Hierarchy of Names and Numbers
    • The Dot
    • Name Resolution
    • Reverse Mapping
  • Building Blocks of the DNS
    • Nameservers
    • Primary and Secondary Nameservers
    • Caching Resolvers
    • Forwarders
  • Other DNS Features
    • Delegation
    • Time to Live
    • Notify
    • Dynamic Update
    • Nameserver Selection
    • Views
    • TSIG
  • Architecture
    • Small Office
    • Branch Office
    • Regional Office
    • Headquarters
    • Recursion
    • Client-Side DNS
    • Anycasting
    • Load Balancing


Appendix A: Root Nameservers

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