module openconfig-types {

    yang-version 1;

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

    prefix oc-types;

    import openconfig-extensions {
      prefix oc-ext;
    }

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
netopenconfig@googlegroups.com";

    description
      "This module contains a set of general type definitions that
are used across OpenConfig models. It can be imported by modules
that make use of these types.";

    revision "2018-01-16" {
      description
        "Add interval to min/max/avg stats; add percentage stat";
      reference
        "0.4.0";

    }

    revision "2017-08-16" {
      description
        "Apply fix for ieetfloat32 length parameter";
      reference
        "0.3.3";

    }

    revision "2017-01-13" {
      description
        "Add ADDRESS_FAMILY identity";
      reference
        "0.3.2";

    }

    revision "2016-11-14" {
      description
        "Correct length of ieeefloat32";
      reference
        "0.3.1";

    }

    revision "2016-11-11" {
      description
        "Additional types - ieeefloat32 and routing-password";
      reference
        "0.3.0";

    }

    revision "2016-05-31" {
      description
        "OpenConfig public release";
      reference
        "0.2.0";

    }

    oc-ext:openconfig-version "0.4.0";

    typedef percentage {
      type uint8 {
        range "0..100";
      }
      description
        "Integer indicating a percentage value";
    }

    typedef std-regexp {
      type string;
      description
        "This type definition is a placeholder for a standard
definition of a regular expression that can be utilised in
OpenConfig models. Further discussion is required to
consider the type of regular expressions that are to be
supported. An initial proposal is POSIX compatible.";
    }

    typedef timeticks64 {
      type uint64;
      description
        "This type is based on the timeticks type defined in
RFC 6991, but with 64-bit width.  It represents the time,
modulo 2^64, in hundredths of a second between two epochs.";
      reference
        "RFC 6991 - Common YANG Data Types";

    }

    typedef ieeefloat32 {
      type binary {
        length "4";
      }
      description
        "An IEEE 32-bit floating point number. The format of this number
is of the form:
 1-bit  sign
 8-bit  exponent
 23-bit fraction
The floating point value is calculated using:
 (-1)**S * 2**(Exponent-127) * (1+Fraction)";
    }

    typedef routing-password {
      type string;
      description
        "This type is indicative of a password that is used within
a routing protocol which can be returned in plain text to the
NMS by the local system. Such passwords are typically stored
as encrypted strings. Since the encryption used is generally
well known, it is possible to extract the original value from
the string - and hence this format is not considered secure.
Leaves specified with this type should not be modified by
the system, and should be returned to the end-user in plain
text. This type exists to differentiate passwords, which
may be sensitive, from other string leaves. It could, for
example, be used by the NMS to censor this data when
viewed by particular users.";
    }

    typedef stat-interval {
      type uint64;
      units "nanoseconds";
      description
        "A time interval over which a set of statistics is computed.
A common usage is to report the interval over which
avg/min/max stats are computed and reported.";
    }

    identity ADDRESS_FAMILY {
      description
        "A base identity for all address families";
    }

    identity IPV4 {
      base ADDRESS_FAMILY;
      description "The IPv4 address family";
    }

    identity IPV6 {
      base ADDRESS_FAMILY;
      description "The IPv6 address family";
    }

    identity MPLS {
      base ADDRESS_FAMILY;
      description "The MPLS address family";
    }

    identity L2_ETHERNET {
      base ADDRESS_FAMILY;
      description
        "The 802.3 Ethernet address family";
    }
  }  // module openconfig-types