YANG Schema Mount
RFC 8528
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Document |
Type |
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RFC - Proposed Standard
(March 2019; Errata)
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Authors |
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Martin Björklund
,
Ladislav Lhotka
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Last updated |
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2020-01-20
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Replaces |
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draft-bjorklund-netmod-structural-mount
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Stream |
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IETF
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Formats |
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plain text
html
pdf
htmlized
with errata
bibtex
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Yang Validation |
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☯
0 errors, 0 warnings.
draft-ietf-netmod-schema-mount-12.txt:
xym 0.4:
Extracting 'ietf-yang-schema-mount@2018-10-16'
Removed 0 empty lines
ietf-yang-schema-mount@2018-10-16.yang:
pyang 1.7.8: pyang --verbose --ietf -p {libs} {model}:
# read ietf-yang-schema-mount@2018-10-16.yang (CL)
# read /a/www/ietf-datatracker/6.93.0/env/share/yang/modules/ietf/ietf-inet-types.yang
# read /a/www/ietf-ftp/yang/draftmod/ietf-inet-types@2019-02-27.yang
# read /a/www/ietf-datatracker/6.93.0/env/share/yang/modules/ietf/ietf-yang-types.yang
# read /a/www/ietf-ftp/yang/draftmod/ietf-yang-types@2019-02-27.yang
yanglint 0.14.80: yanglint --verbose -p {rfclib} -p {draftlib} -p {tmplib} {model} -i:
No validation errors
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Reviews |
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Additional Resources |
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Stream |
WG state
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Submitted to IESG for Publication
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Document shepherd |
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Joel Jaeggli
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Shepherd write-up |
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Show
(last changed 2018-04-16)
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IESG |
IESG state |
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RFC 8528 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Ignas Bagdonas
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Send notices to |
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"Lou Berger" <lberger@labn.net>, Kent Watsen <kwatsen@juniper.net>, Joel Jaeggli <joelja@gmail.com>
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IANA |
IANA review state |
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Version Changed - Review Needed
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IANA action state |
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RFC-Ed-Ack
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Internet Engineering Task Force (IETF) M. Bjorklund
Request for Comments: 8528 Tail-f Systems
Category: Standards Track L. Lhotka
ISSN: 2070-1721 CZ.NIC
March 2019
YANG Schema Mount
Abstract
This document defines a mechanism that adds the schema trees defined
by a set of YANG modules onto a mount point defined in the schema
tree in another YANG module.
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/rfc8528.
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.
Bjorklund & Lhotka Standards Track [Page 1]
RFC 8528 YANG Schema Mount March 2019
Table of Contents
1. Introduction ....................................................3
2. Terminology and Notation ........................................6
2.1. Tree Diagrams ..............................................7
2.2. Namespace Prefixes .........................................7
3. Schema Mount ....................................................8
3.1. Mount Point Definition .....................................8
3.2. Data Model .................................................9
3.3. Specification of the Mounted Schema ........................9
3.4. Multiple Levels of Schema Mount ...........................10
4. Referring to Data Nodes in the Parent Schema ...................10
5. RPC Operations and Notifications ...............................11
6. NMDA Considerations ............................................12
7. Interaction with NACM ..........................................12
8. Implementation Notes ...........................................13
9. Schema Mount YANG Module .......................................13
10. IANA Considerations ...........................................18
11. Security Considerations .......................................18
12. References ....................................................19
12.1. Normative References .....................................19
12.2. Informative References ...................................21
Appendix A. Example: Device Model with LNEs and NIs ..............22
A.1. Physical Device ...........................................22
A.2. Logical Network Elements ..................................24
A.3. Network Instances .........................................27
A.4. Invoking an RPC Operation .................................28
Contributors ......................................................28
Authors' Addresses ................................................28
Bjorklund & Lhotka Standards Track [Page 2]
RFC 8528 YANG Schema Mount March 2019
1. Introduction
Modularity and extensibility are among the leading design principles
of the YANG data modeling language. As a result, the same YANG
module can be combined with various sets of other modules to form a
data model that is tailored to meet the requirements of a specific
use case. Server implementors are only required to specify all YANG
modules comprising the data model (together with their revisions and
other optional choices) in the YANG library data ([RFC7895],
[RFC8525], and Section 5.6.4 of [RFC7950]) implemented by the server.
Such YANG modules appear in the data model "side by side", i.e., top-
level data nodes of each module (if there are any) are also top-level
nodes of the overall data model.
YANG has two mechanisms for contributing a schema hierarchy defined
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