DNS Terminology
draft-ietf-dnsop-dns-terminology-04

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Document Type Active Internet-Draft (dnsop WG)
Last updated 2015-09-17 (latest revision 2015-08-31)
Replaces draft-hoffman-dns-terminology
Stream IETF
Intended RFC status Informational
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Stream WG state Submitted to IESG for Publication
Document shepherd Tim Wicinski
Shepherd write-up Show (last changed 2015-06-25)
IESG IESG state Approved-announcement to be sent::Point Raised - writeup needed
Consensus Boilerplate Yes
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Send notices to "Tim Wicinski" <tjw.ietf@gmail.com>
IANA IANA review state IANA OK - No Actions Needed
Network Working Group                                         P. Hoffman
Internet-Draft                                                     ICANN
Intended status: Informational                               A. Sullivan
Expires: March 3, 2016                                               Dyn
                                                             K. Fujiwara
                                                                    JPRS
                                                         August 31, 2015

                            DNS Terminology
                  draft-ietf-dnsop-dns-terminology-04

Abstract

   The DNS is defined in literally dozens of different RFCs.  The
   terminology used 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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   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 March 3, 2016.

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 . . . . . . . . . . . . . . . .   6
   4.  Resource Records  . . . . . . . . . . . . . . . . . . . . . .   7
   5.  DNS Servers and Clients . . . . . . . . . . . . . . . . . . .   8
   6.  Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
   7.  Registration Model  . . . . . . . . . . . . . . . . . . . . .  16
   8.  General DNSSEC  . . . . . . . . . . . . . . . . . . . . . . .  17
   9.  DNSSEC States . . . . . . . . . . . . . . . . . . . . . . . .  20
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  21
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  21
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  21
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  22
     13.2.  Informative References . . . . . . . . . . . . . . . . .  24
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  26

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.

   Most of 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.  In this document, where the consensus
   definition is the same as the one in an RFC, that RFC is quoted.
   Where the consensus definition has changed somewhat, the RFC is
   mentioned but the new stand-alone definition is given.

   It is important to note that, during the development of this
   document, it became clear that some DNS-related terms are interpreted

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