DNS Terminology
draft-ietf-dnsop-dns-terminology-01

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Document Type Active Internet-Draft (dnsop WG)
Last updated 2015-04-29
Replaces draft-hoffman-dns-terminology
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Network Working Group                                         P. Hoffman
Internet-Draft                                            VPN Consortium
Intended status: Best Current Practice                       A. Sullivan
Expires: October 31, 2015                                            Dyn
                                                             K. Fujiwara
                                                                    JPRS
                                                          April 29, 2015

                            DNS Terminology
                   draft-ietf-dnsop-dns-terminology-01

Abstract

   The DNS is defined in literally dozens of different RFCs.  The
   terminology used in by implementers and developers of DNS protocols,
   and by operators of DNS systems, has sometimes changed in the decades
   since the DNS was first defined.  This document gives current
   definitions for many of the terms used in the DNS in a single
   document.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   Internet-Drafts are draft documents valid for a maximum of six months
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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on October 31, 2015.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

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   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Names . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DNS Header and Response Codes . . . . . . . . . . . . . . . .   4
   4.  Resource Records  . . . . . . . . . . . . . . . . . . . . . .   5
   5.  DNS Servers . . . . . . . . . . . . . . . . . . . . . . . . .   7
   6.  Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . .  10
   7.  Registration Model  . . . . . . . . . . . . . . . . . . . . .  13
   8.  General DNSSEC  . . . . . . . . . . . . . . . . . . . . . . .  14
   9.  DNSSEC States . . . . . . . . . . . . . . . . . . . . . . . .  15
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  17
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  17
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  18
     13.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

1.  Introduction

   The domain name system (DNS) is a simple query-response protocol
   whose messages in both directions have the same format.  The protocol
   and message format are defined in [RFC1034] and [RFC1035].  These
   RFCs defined some terms, but later documents defined others.  Some of
   the terms from RFCs 1034 and 1035 now have somewhat different
   meanings than they did in 1987.

   This document collects a wide variety of DNS-related terms.  Some of
   them have been precisely defined in earlier RFCs, some have been
   loosely defined in earlier RFCs, and some are not defined in any
   earlier RFC at all.

   The definitions here are believed to be the consensus definition of
   the DNS community, both protocol developers and operators.  Some of
   the definitions differ from earlier RFCs, and those differences are
   noted.  The terms are organized loosely by topic.  Some definitions
   are for new terms for things that are commonly talked about in the
   DNS community but that never had terms defined for them.

   In this document, where the consensus definition is the same as the
   one in an RFC, that RFC is quoted.  Where the consensus definition

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