module ieee802-types {

    yang-version 1;

    namespace
      'urn:ieee:std:802.1Q:yang:ieee802-types';

    prefix ieee;

    organization "IEEE 802.1 Working Group";

    contact
      "WG-URL: http://www.ieee802.org/1/
    WG-EMail: stds-802-1-L@ieee.org
    
    Contact: IEEE 802.1 Working Group Chair
    Postal: C/O IEEE 802.1 Working Group
            IEEE Standards Association
            445 Hoes Lane
            P.O. Box 1331
            Piscataway
            NJ 08854
            USA
    
    E-mail: STDS-802-1-L@IEEE.ORG";

    description
      "This module contains a collection of generally useful derived
    data types for IEEE YANG models.";

    revision "2020-10-23" {
      description
        "New revision date because Qcx project finished.";
      reference
        "6.3.3.4 of IEEE Std 802.1AS-2020";

    }

    revision "2019-03-07" {
      description
        "Adding types to define rational numbers and PTP time.";
      reference
        "6.3.3.4 of IEEE Std 802.1AS-2020";

    }

    revision "2018-03-07" {
      description
        "Published as part of IEEE Std 802.1Q-2018. Initial version.";
      reference
        "IEEE Std 802.1Q-2018, Bridges and Bridged Networks.";

    }


    typedef mac-address {
      type string {
        pattern
          "[0-9a-fA-F]{2}(-[0-9a-fA-F]{2}){5}";
      }
      description
        "The mac-address type represents a MAC address in the canonical
      format and hexadecimal format specified by IEEE Std 802. The
      hexidecimal representation uses uppercase characters.";
      reference
        "3.1 of IEEE Std 802-2014
        8.1 of IEEE Std 802-2014";

    }
  }  // module ieee802-types