YANG Library
RFC 8525
| Document | Type |
RFC - Proposed Standard
(March 2019; No errata)
Obsoletes RFC 7895
|
|||||
|---|---|---|---|---|---|---|---|
| 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 |
|
||||||
| 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)
|
||||||
| 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-
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