Architectural Considerations on Application Features in the DNS
draft-iab-dns-applications-03

The information below is for an old version of the document
Document Type Active Internet-Draft
Last updated 2011-10-31 (latest revision 2011-07-11)
Stream IAB
Intended RFC status (None)
Formats plain text pdf html bibtex
Additional URLs
Stream IAB state (None)
Consensus Boilerplate Unknown
RFC Editor Note (None)
Network Working Group                                         O. Kolkman
Internet-Draft                                                     NLNet
Intended status: Informational                               J. Peterson
Expires: May 3, 2012                                       NeuStar, Inc.
                                                           H. Tschofenig
                                                  Nokia Siemens Networks
                                                                B. Aboba
                                                   Microsoft Corporation
                                                        October 31, 2011

    Architectural Considerations on Application Features in the DNS
                     draft-iab-dns-applications-03

Abstract

   A number of Internet applications rely on the Domain Name System
   (DNS) to support their operations.  Many applications use the DNS to
   locate services for a domain, for example; more recently, some
   applications have begun transforming identifiers other than domain
   names into formats that the DNS can process.  Proposals to
   incorporate more sophisticated application behavior into the DNS,
   however, have raised questions about the applicability and
   extensibility of the DNS.  This document explores the architectural
   consequences of installing certain application features in the DNS,
   and provides guidance to future application designers as to the sorts
   of ways that application can make use of the DNS.

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 May 3, 2012.

Copyright Notice

   Copyright (c) 2011 IETF Trust and the persons identified as the

Kolkman, et al.            Expires May 3, 2012                  [Page 1]
Internet-Draft             Applications in DNS              October 2011

   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
   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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Kolkman, et al.            Expires May 3, 2012                  [Page 2]
Internet-Draft             Applications in DNS              October 2011

Table of Contents

   1.  Motivation . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Overview of DNS Application Usages . . . . . . . . . . . . . .  6
     2.1.  Locating Services in a Domain  . . . . . . . . . . . . . .  6
     2.2.  NAPTR and DDDS . . . . . . . . . . . . . . . . . . . . . .  7
     2.3.  Arbitrary Data in the DNS  . . . . . . . . . . . . . . . .  9
   3.  Challenges for the DNS . . . . . . . . . . . . . . . . . . . . 11
     3.1.  Compound Queries . . . . . . . . . . . . . . . . . . . . . 11
       3.1.1.  Responses Tailored to the Originator . . . . . . . . . 13
     3.2.  Using DNS as a Generic Database  . . . . . . . . . . . . . 14
       3.2.1.  Large Data in the DNS  . . . . . . . . . . . . . . . . 14
     3.3.  Administrative Structures Misaligned with the DNS  . . . . 16
       3.3.1.  Metadata about Tree Structure  . . . . . . . . . . . . 17
     3.4.  Domain Redirection . . . . . . . . . . . . . . . . . . . . 19
   4.  Private DNS and Split Horizon  . . . . . . . . . . . . . . . . 21
Show full document text