On Interoperation of Labels Among Conventional DNS and Other Resolution Systems
draft-ietf-dnssd-mdns-dns-interop-04

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Last updated 2017-08-01 (latest revision 2017-01-03)
Replaces draft-sullivan-dnssd-mdns-dns-interop
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DNSSD                                                        A. Sullivan
Internet-Draft                                                       Dyn
Intended status: Informational                           January 3, 2017
Expires: July 7, 2017

On Interoperation of Labels Among Conventional DNS and Other Resolution
                                Systems
                  draft-ietf-dnssd-mdns-dns-interop-04

Abstract

   Despite its name, DNS-Based Service Discovery can use naming systems
   other than the Domain Name System when looking for services.
   Moreover, when it uses the DNS, DNS-Based Service Discovery uses the
   full capability of DNS, rather than using a subset of available
   octets.  In order for DNS-SD to be used effectively in environments
   where multiple different name systems and conventions for their
   operation are in use, it is important to attend to differences in the
   underlying technology and operational environment.  This memo
   presents an outline of the requirements for selection of labels for
   conventional DNS and other resolution systems when they are expected
   to interoperate in this manner.

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
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

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   This Internet-Draft will expire on July 7, 2017.

Copyright Notice

   Copyright (c) 2017 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

Sullivan                  Expires July 7, 2017                  [Page 1]
Internet-Draft          Multi-resolution Interop            January 2017

   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Conventions and terms used in this document . . . . . . .   3
   2.  Why there could be a problem at all . . . . . . . . . . . . .   4
   3.  Requirements for a profile for label interoperation . . . . .   5
   4.  DNS-SD portions . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  The <Instance> Portion of the Service
           Instance Name . . . . . . . . . . . . . . . . . . . . . .   6
     4.2.  The <Service> Portion of the Service
           Instance Name . . . . . . . . . . . . . . . . . . . . . .   7
     4.3.  The <Domain> Portion of the             Service Instance
           Name  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   9
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   8.  Informative References  . . . . . . . . . . . . . . . . . . .   9
   Appendix A.  Change History . . . . . . . . . . . . . . . . . . .  11
     A.1.  draft-ietf-dnssd-mdns-dns-interop-04  . . . . . . . . . .  11
     A.2.  draft-ietf-dnssd-mdns-dns-interop-03  . . . . . . . . . .  11
     A.3.  draft-ietf-dnssd-mdns-dns-interop-02  . . . . . . . . . .  11
     A.4.  draft-ietf-dnssd-mdns-dns-interop-01  . . . . . . . . . .  11
     A.5.  draft-ietf-dnssd-mdns-dns-interop-00  . . . . . . . . . .  11
     A.6.  draft-sullivan-dnssd-mdns-dns-interop-01  . . . . . . . .  12
     A.7.  draft-sullivan-dnssd-mdns-dns-interop-00  . . . . . . . .  12
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   DNS-Based Service Discovery (DNS-SD, [RFC6763]) specifies a mechanism
   for discovering services using queries to the Domain Name System
   (DNS, [RFC1034], [RFC1035]); and to any other system that uses domain
   names, such as Multicast DNS (mDNS, [RFC6762]).  Many applications
   that use the DNS follow "Internet hostname" syntax [RFC0952] for
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