Network Working Group E. Cardona Internet-Draft S. Channabasappa Intended status: Informational J-F. Mule Expires: July 9, 2009 CableLabs January 5, 2009 A Uniform Resource Name (URN) Namespace for CableLabs draft-cardona-cablelabs-urn-01 Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. 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." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on July 9, 2009. Copyright Notice Copyright (c) 2009 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 to this document. Abstract This document describes the Namespace Identifier (NID) for Uniform Cardona, et al. Expires July 9, 2009 [Page 1] Internet-Draft URN Namespace for CableLabs January 2009 Resource Namespace (URN) resources published by Cable Television Laboratories Inc. (CableLabs). CableLabs publishes specifications that define unique and persistent resources that make use of the Cablelabs URN namespace. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. URN Specification for CableLabs . . . . . . . . . . . . . . . . 3 3. Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4. Namespace Considerations . . . . . . . . . . . . . . . . . . . 5 5. Community Considerations . . . . . . . . . . . . . . . . . . . 6 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6 7. Security Considerations . . . . . . . . . . . . . . . . . . . . 6 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.1. Normative References . . . . . . . . . . . . . . . . . . . 6 8.2. Informative References . . . . . . . . . . . . . . . . . . 6 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 7 Cardona, et al. Expires July 9, 2009 [Page 2] Internet-Draft URN Namespace for CableLabs January 2009 1. Introduction CableLabs is a non-profit research and development consortium that is dedicated to pursuing new cable telecommunications technologies and to helping its cable operator members integrate those technical advancements into their business objectives. Within CableLabs, specification activities are organized into projects such as DOCSIS(r), PacketCable(tm), and OpenCable(tm), and technical work is conducted in focus teams. Product vendors, manufacturers, and cable operator members are invited to join the focus teams that create technical specifications. From time to time, some specifications developed by CableLabs require a URN namespace to uniquely identify resources. CableLabs manages these resource assignments prior to specification publication and ensures they are both unique and persistent. This document defines a full and complete NID registration that follows [RFC3406] for the purpose of having unique and persistent namespace definitions in CableLabs specifications. 2. URN Specification for CableLabs Namespace ID: The NID "cablelabs" is requested. Registration Information: registration version number: 1 registration date: 2008-07-02 Declared registrant of the namespace: Registering organization Name: Cable Television Laboratories Inc. Address: 858 Coal Creek Circle, Louisville, CO 80027, USA Designated contact Role: Standards Manager Email: ietf-standards@cablelabs.com Declaration of syntactic structure: Cardona, et al. Expires July 9, 2009 [Page 3] Internet-Draft URN Namespace for CableLabs January 2009 The Namespace Specific String (NSS) of all URNs that use the "cablelabs" NID will have the following structure: urn:cablelabs:{CLresource}:{CLResourceSpecificString} where the "CLresource" is a US-ASCII string that conforms to the URN syntax requirements [RFC2141] and defines a specific class of resource type. Each resource type has a specific labeling scheme that is covered by "CLResourceSpecificString", which also conforms to the naming requirements of [RFC2141]. CableLabs maintains the CableLabs Assigned Names and Numbers [CANN] specification that will contain the assignment of "CLresources" and the specific registration values assigned for each resource class. Relevant ancillary documentation: CableLabs publishes information on the registered resources in the [CANN] specification available at: http://www.cablelabs.com/specifications/cpSpecs.html Identifier uniqueness considerations: CableLabs will manage resources using the "cablelabs" NID and will be the authority for managing the resources and subsequent strings associated. CableLabs is expected to guarantee the uniqueness of the strings themselves or it may permit secondary responsibility for certain defined resources. CableLabs could allow the use of experimental type values for testing purposes only. Note that using experimental types may create collisions as multiple users may use the same values for resources and specific strings. Identifier persistence considerations: CableLabs keeps track of its assigned names and numbers for protocol use in the [CANN] specification. [CANN] will be updated to document the registered resources in the "cablelabs" NID. Process of identifier assignment: CableLabs will provide procedures for registration of each type of resource that it maintains. Each such resource may have three types of registration activities: Cardona, et al. Expires July 9, 2009 [Page 4] Internet-Draft URN Namespace for CableLabs January 2009 1. Registered values associated with CableLabs documents or services 2. Registration of values or sub-trees to other entities 3. Name models for use in experimental purposes Process for identifier resolution: The namespace is not listed with a resolution discovery system; this is not applicable for this URN registration. Rules for Lexical Equivalence: No special considerations; the rules for lexical equivalence of [RFC2141] apply. Conformance with URN Syntax: No special considerations. Validation mechanism: None specified. URN assignment will be handled by procedures implemented in support of CableLabs activities. Scope: Global 3. Example The following example represents an hypothetical URN that could be assigned by Cablelabs. urn:cablelabs:packetcable-example:ue:rst-sample Defines the URN to be used for the User Equipment (UE) implementing the sample Residential SIP Telephony Application (RST) defined in the Packetcable specifications. 4. Namespace Considerations CableLabs develops specifications that may require the use of data models. URN Namespaces are key constructs to manage the definitions of those data models reliably with persistence and uniqueness. Cardona, et al. Expires July 9, 2009 [Page 5] Internet-Draft URN Namespace for CableLabs January 2009 The use of URNs should also help specification authors to maintain different versions of URNs and dependencies between urns, across different versions of CableLabs specifications if they so wish. 5. Community Considerations The CableLabs specifications are publicly available or licensed to manufacturers in a nondiscriminatory basis. CableLabs will maintain the allocation of resources for the "cablelabs" NID and maintain updated the corresponding specifications where those resources are referenced or used. 6. IANA Considerations The requested NID has been entered into the IANA registry for URN NIDs. The update can be found at: http://www.iana.org/assignments/urn-namespaces and any associated mirrors. 7. Security Considerations There are no additional security considerations other than those normally associated with the use and resolution of URNs in general. 8. References 8.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997. [RFC2141] Moats, R., "URN Syntax", RFC 2141, May 1997. [RFC3406] Daigle, L., van Gulik, D., Iannella, R., and P. Faltstrom, "Uniform Resource Names (URN) Namespace Definition Mechanisms", BCP 66, RFC 3406, October 2002. 8.2. Informative References [CANN] Cable Television Laboratories Inc., "CableLabs' Assigned Names and Numbers", 2008, . Cardona, et al. Expires July 9, 2009 [Page 6] Internet-Draft URN Namespace for CableLabs January 2009 [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 5226, May 2008. Authors' Addresses Eduardo Cardona CableLabs 858 Coal Creek Circle Louisville, CO 80027 USA Phone: +1 303 661 3375 Email: e.cardona@cablelabs.com Sumanth Channabasappa CableLabs 858 Coal Creek Circle Louisville, CO 80027 USA Phone: +1 303 661 3307 Email: s.channabasappa@cablelabs.com Jean-Francois Mule CableLabs 858 Coal Creek Circle Louisville, CO 80027 USA Phone: +1 303 661 3708 Email: jf.mule@cablelabs.com Cardona, et al. Expires July 9, 2009 [Page 7]