module openconfig-extensions {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/openconfig-ext";

    prefix oc-ext;

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
www.openconfig.net";

    description
      "This module provides extensions to the YANG language to allow
OpenConfig specific functionality and meta-data to be defined.";

    revision "2017-01-29" {
      description
        "Added extension for annotating encrypted values.";
      reference
        "TBD";

    }

    revision "2015-10-09" {
      description
        "Initial OpenConfig public release";
      reference
        "TBD";

    }

    revision "2015-10-05" {
      description "Initial revision";
      reference
        "TBD";

    }


    extension openconfig-version {
      argument "semver" {
        yin-element false;
      }
      description
        "The OpenConfig version number for the module. This is
expressed as a semantic version number of the form:
 x.y.z
where:
 * x corresponds to the major version,
 * y corresponds to a minor version,
 * z corresponds to a patch version.
This version corresponds to the model file within which it is
defined, and does not cover the whole set of OpenConfig models.
Where several modules are used to build up a single block of
functionality, the same module version is specified across each
file that makes up the module.

A major version number of 0 indicates that this model is still
in development (whether within OpenConfig or with industry
partners), and is potentially subject to change.

Following a release of major version 1, all modules will
increment major revision number where backwards incompatible
changes to the model are made.

The minor version is changed when features are added to the
model that do not impact current clients use of the model.

The patch-level version is incremented when non-feature changes
(such as bugfixes or clarifications to human-readable
descriptions that do not impact model functionality) are made
that maintain backwards compatibility.

The version number is stored in the module meta-data.";
    }

    extension openconfig-encrypted-value {
      description
        "This extension provides an annotation on schema nodes to
indicate that the corresponding value should be stored and
reported in encrypted form.

Clients reading the configuration or applied configuration
for the node should expect to receive only the encrypted value.
This annotation may be used on nodes such as secure passwords
in which the device never reports a cleartext value, even
if the input is provided as cleartext.";
    }
  }  // module openconfig-extensions