YANG Library
RFC 8525
Document | Type |
RFC - Proposed Standard
(March 2019; No errata)
Obsoletes RFC 7895
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Authors | Andy Bierman , Martin Björklund , Jürgen Schönwälder , Kent Watsen , Robert Wilton | ||||||
Last updated | 2019-03-06 | ||||||
Replaces | draft-nmdsdt-netconf-rfc7895bis | ||||||
Stream | IETF | ||||||
Formats | plain text html pdf htmlized bibtex | ||||||
Yang Validation | ☯ 2 errors, 0 warnings. | ||||||
Reviews | |||||||
Additional Resources |
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Stream | WG state | Submitted to IESG for Publication | |||||
Document shepherd | Mahesh Jethanandani | ||||||
Shepherd write-up | Show (last changed 2018-04-09) | ||||||
IESG | IESG state | RFC 8525 (Proposed Standard) | |||||
Action Holders |
(None)
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Consensus Boilerplate | Yes | ||||||
Telechat date | |||||||
Responsible AD | Ignas Bagdonas | ||||||
Send notices to | Mahesh Jethanandani <mjethanandani@gmail.com> | ||||||
IANA | IANA review state | IANA OK - Actions Needed | |||||
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) A. Bierman Request for Comments: 8525 YumaWorks Obsoletes: 7895 M. Bjorklund Category: Standards Track Tail-f Systems ISSN: 2070-1721 J. Schoenwaelder Jacobs University K. Watsen Watsen Networks R. Wilton Cisco Systems March 2019 YANG Library Abstract This document describes a YANG library that provides information about the YANG modules, datastores, and datastore schemas used by a network management server. Simple caching mechanisms are provided to allow clients to minimize retrieval of this information. This version of the YANG library supports the Network Management Datastore Architecture (NMDA) by listing all datastores supported by a network management server and the schema that is used by each of these datastores. This document obsoletes RFC 7895. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8525. Bierman, et al. Standards Track [Page 1] RFC 8525 YANG Library March 2019 Copyright Notice Copyright (c) 2019 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 (https://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. Table of Contents 1. Introduction ....................................................3 1.1. Terminology ................................................4 2. Objectives ......................................................5 3. YANG Library Data Model .........................................6 4. YANG Library YANG Module ........................................8 5. IANA Considerations ............................................20 6. Security Considerations ........................................21 7. References .....................................................22 7.1. Normative References ......................................22 7.2. Informative References ....................................23 Appendix A. Summary of Changes from RFC 7895 .....................25 Appendix B. Example YANG Library Instance for a Basic Server .....25 Appendix C. Example YANG Library Instance for an Advanced Server .27 Authors' Addresses ................................................32 Bierman, et al. Standards Track [Page 2] RFC 8525 YANG Library March 2019 1. Introduction There is a need for a standard mechanism to expose which YANG modules [RFC7950], datastores [RFC8342], and datastore schemas [RFC8342] are in use by a network management server. This document defines the YANG module "ietf-yang-library" that provides this information. This version of the YANG library is compatible with the Network Management Datastore Architecture (NMDA) [RFC8342]. The previous version of the YANG library, defined in [RFC7895], is not compatible with the NMDA since it assumes that all datastores have exactly the same schema. This is not necessarily true in the NMDA since dynamic configuration datastores may have their own datastore schema. Furthermore, the operational state datastore may support non-configurable YANG modules in addition to the YANG modules supported by conventional configuration datastores. The old YANG library definitions have been retained (for backwards-Show full document text