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DISCOVER: Supporting Multicast DNS Queries (RFC6804) Disclosure Number: IPCOM000223791D
Original Publication Date: 2012-Nov-01
Included in the Prior Art Database: 2012-Nov-29
Document File: 18 page(s) / 20K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

B. Manning: AUTHOR


The first existing network service to be investigated was the Domain Name Systems (DNS), which is used to map symbolic Internet names to numeric Internet addresses. Based upon a hierarchical tree structure, the DNS relies upon uninterrupted connectivity of nodes to a special set of static, manually configured root servers. To improve the robustness and availability of the DNS service, TBDS developed and defined enhancements that enable nodes to map names to numbers without the need for uninterrupted connectivity to the Internet root servers. These techniques were automated, allowing transition between connected and unconnected operations to be done without direct human intervention.

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Independent Submission                                        B. Manning Request for Comments: 6804                                 November 2012 Category: Historic ISSN: 2070-1721

                DISCOVER: Supporting Multicast DNS Queries


   This document describes the DISCOVER opcode, an experimental    extension to the Domain Name System (DNS) to use multicast queries    for resource discovery.  This opcode was tested in experiments run    during 1995 and 1996 for the Topology Based Domain Search (TBDS)    project.  This project is no longer active and there are no current    plans to restart it.  TBDS was the first known use of multicast    transport for DNS.  A client multicasts a DNS query using the    DISCOVER opcode and processes the multiple responses that may result.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for the historical record.

   This document defines a Historic Document for the Internet community.    This is a contribution to the RFC Series, independently of any other    RFC stream.  The RFC Editor has chosen to publish this document at    its discretion and makes no statement about its value for    implementation or deployment.  Documents approved for publication by    the RFC Editor are not a candidate for any level of Internet    Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

Copyright Notice

   Copyright (c) 2012 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    ( 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.

 Manning                         Historic                        [Page 1]
 RFC 6804                        DISCOVER                   November 2012

 1.  Introduction

   The TBDS project developed extensions to existing network services to    enable software for clients and servers of an application to become    more resilient to changes in topology by dynamically sensing changes    and switching between client/server and peer-peer methods for both    end-system-to-server and server-to-server communications.

   The first existing network service to be investigated was the Domain    Name Systems (DNS), which is used to map symbolic Internet names to    numeric Internet addresses.  Based upon a...