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YANG details

YANG

YANG is a powerful and versatile data modeling language that was designed from the requirements of network operators for an easy to use and robust mechanism for provisioning devices and services across networks. It was originally designed at the Internet Engineering Task Force (IETF) and has been so successful that it has been adopted as the standard for modeling design in many other standards bodies such as the Metro Ethernet Forum, OpenDaylight, OpenConfig, and others. The number of YANG modules being implemented for interfaces, devices, and service is exploding.

The YANG RFC 6020 has many very readable examples.

Key IETF YANG RFCs and YumaPro support:

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RFC 6020 (YANG v1.0)

The YANG data modeling language is fully supported. View the RFC.
RFC 6021 (YANG Data Types v1)

The standard YANG data type extensions are fully supported. View the RFC.
RFC 6643 (Translation of SMIv2 to YANG)

Defines a translation of SMIv2 MIB modules into YANG modules, enabling read-only (config false) access to data objects defined in SMIv2 MIB modules via NETCONF. View the RFC.
RFC 6991 (YANG Data Types v2)

New YANG type definitions, and other updates to the standard are fully supported. View the RFC.
RFC 7895 (YANG Module Library)

YANG library that provides information about all the YANG modules used by a network management server (e.g., a Network Configuration Protocol (NETCONF) server), which can be easily cached by clients to minimize costly data retrieval, is fully supported. View the RFC.
RFC 7950 (YANG v1.1)

This maintenance release of the YANG language, which addresses some ambiguities and defects in YANG v1.0, is fully supported. View the RFC.
RFC 7951 (JSON encoding of YANG Data)

Encoding rules for representing configuration data, state data, parameters of Remote Procedure Call (RPC) operations or actions, and notifications defined using YANG as JavaScript Object Notation (JSON) text are fully supported. View the RFC.
RFC 8072 (YANG Patch)

Applying patches to configuration datastores using data defined with the YANG data modeling language, is fully supported. View the RFC.

Key YANG Module support:

ietf-inet-types

Standard YANG networking data types from RFC 6021. View the RFC.
ietf-netconf

Standard YANG data model for NETCONF protocol operations from RFC 6241. View the RFC.
ietf-netconf-acm

Standard NETCONF Access Control Model (NACM) from RFC 6536. View the RFC.
ietf-netconf-monitoring

Standard NETCONF monitoring data model and operation from RFC 6022 to retrieve YANG modules from the server. View the RFC.
ietf-netconf-notifications

Standard NETCONF Notification delivery with replay buffer and command interleave mode from RFC 5217. View the RFC.
ietf-netconf-partial-lock

Standard NETCONF and operations from RFC 5717 to support concurrent non-overlapping database edits. View the RFC.
ietf-netconf-with-defaults

Standard NETCONF :with-defaults capability extensions to the and operations.
ietf-yang-types

Standard YANG data types from RFC 6021. View the RFC.
nc-notifications

Netconf Central YANG module for notification monitoring data model from RFC 5277. View the RFC.
notifications

Netconf Central YANG module for operation from RFC 5277. View the RFC.
yuma-arp

Netconf Central YANG module for Linux ARP management.
yuma-interfaces

Netconf Central YANG module for Linux interface monitoring.
yuma-mysession

Netconf Central YANG module for setting and retrieving session-specific session parameters.
yuma-nacm

Netconf Central YANG module for NETCONF Access Control, used as the starting point for NACM in RFC 6536. View the RFC.
yuma-ncx

Netconf Central YANG language extensions.
yuma-proc

Netconf Central YANG module for Linux /proc system information.
yuma-system

Netconf Central YANG module for NETCONF system management and notifications, which was used as the starting point for RFC 6470. View the RFC.
yuma-time-filter

Netconf Central YANG module for time-stamp based filtered of configuration data.
yuma-types

Netconf Central YANG module for extended data types.
yumaworks-extensions

YumaWorks YANG language extensions.
yumaworks-types

YumaWorks YANG data type extensions.
yumaworks-system

YumaWorks extensions for CM maintenance such as the backup, restore, and delete-backup operations.

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