YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)
RFC 6020
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RFC - Proposed Standard
(October 2010; Errata)
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2015-10-14
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IETF
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plain text
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WG state
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(None)
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Document shepherd |
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No shepherd assigned
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IESG state |
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RFC 6020 (Proposed Standard)
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Consensus Boilerplate |
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Unknown
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Responsible AD |
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Dan Romascanu
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(None)
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Internet Engineering Task Force (IETF) M. Bjorklund, Ed.
Request for Comments: 6020 Tail-f Systems
Category: Standards Track October 2010
ISSN: 2070-1721
YANG - A Data Modeling Language for
the Network Configuration Protocol (NETCONF)
Abstract
YANG is a data modeling language used to model configuration and
state data manipulated by the Network Configuration Protocol
(NETCONF), NETCONF remote procedure calls, and NETCONF notifications.
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 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6020.
Copyright Notice
Copyright (c) 2010 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. 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 Standards Track [Page 1]
RFC 6020 YANG October 2010
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction ....................................................8
2. Keywords ........................................................8
3. Terminology .....................................................8
3.1. Mandatory Nodes ...........................................10
4. YANG Overview ..................................................11
4.1. Functional Overview .......................................11
4.2. Language Overview .........................................13
4.2.1. Modules and Submodules .............................13
4.2.2. Data Modeling Basics ...............................13
4.2.3. State Data .........................................18
4.2.4. Built-In Types .....................................18
4.2.5. Derived Types (typedef) ............................19
4.2.6. Reusable Node Groups (grouping) ....................20
4.2.7. Choices ............................................21
4.2.8. Extending Data Models (augment) ....................22
4.2.9. RPC Definitions ....................................23
4.2.10. Notification Definitions ..........................24
5. Language Concepts ..............................................25
5.1. Modules and Submodules ....................................25
5.1.1. Import and Include by Revision .....................26
5.1.2. Module Hierarchies .................................27
5.2. File Layout ...............................................28
5.3. XML Namespaces ............................................29
5.3.1. YANG XML Namespace .................................29
5.4. Resolving Grouping, Type, and Identity Names ..............29
5.5. Nested Typedefs and Groupings .............................29
5.6. Conformance ...............................................30
5.6.1. Basic Behavior .....................................31
5.6.2. Optional Features ..................................31
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