module openconfig-transport-line-protection {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/optical-transport-line-protection";

    prefix oc-line-protect;

    import openconfig-extensions {
      prefix oc-ext;
    }
    import openconfig-types {
      prefix oc-types;
    }
    import openconfig-platform {
      prefix oc-platform;
    }

    organization "OpenConfig working group";

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

    description
      "This model describes configuration and operational state data
     for optical line protection elements, deployed as part of a
     transport line system. An Automatic Protection Switch (APS)
     is typically installed in the same device as the amplifiers
     and wave-router, however an APS can also be a standalone
     device. In both scenarios, it serves the same purpose of
     providing protection using two dark fiber pairs to ensure the
     amplifiers can still receive a signal if one of the two fiber
     pairs is broken.";

    revision "2017-09-08" {
      description
        "Correct bug with OSC interfaces";
      reference
        "0.3.1";

    }

    revision "2017-07-08" {
      description
        "Support multiple OCMs, add monitor port type
       and refs to hw ports, ";
      reference
        "0.3.0";

    }

    revision "2017-03-28" {
      description
        "Added min/max/avg stats, status for media channels, OCM, APS";
      reference
        "0.2.0";

    }

    revision "2016-08-05" {
      description "Initial public release";
      reference
        "0.1.0";

    }

    oc-ext:openconfig-version "0.3.1";

    identity APS_PATHS {
      description
        "Base identity for identifying the line paths on an
       automatic protection switch";
    }

    identity PRIMARY {
      base APS_PATHS;
      description
        "The primary line path connected to an automatic protection
       switch port indicating the primary/preferred path";
    }

    identity SECONDARY {
      base APS_PATHS;
      description
        "The secondary line path connected to an automatic protection
       switch port indicating the secondary path";
    }
  }  // module openconfig-transport-line-protection