module ietf-microwave-radio-link {

    yang-version 1.1;

    namespace
      "urn:ietf:params:xml:ns:yang:ietf-microwave-radio-link";

    prefix mrl;

    import ietf-yang-types {
      prefix yang;
      reference
        "RFC 6991";


    }
    import iana-if-type {
      prefix ianaift;
    }
    import ietf-interfaces {
      prefix if;
      reference
        "RFC 8343";


    }
    import ietf-interface-protection {
      prefix ifprot;
      reference
        "RFC 8561";


    }
    import ietf-microwave-types {
      prefix mw-types;
      reference
        "RFC 8561";


    }

    organization
      "Internet Engineering Task Force (IETF) CCAMP WG";

    contact
      "WG List: <mailto:ccamp@ietf.org>

     Editors:
      Jonas Ahlberg (jonas.ahlberg@ericsson.com)
      Min Ye (amy.yemin@huawei.com)
      Xi Li (Xi.Li@neclab.eu)
      Daniela Spreafico (daniela.spreafico@nokia.com)
      Marko Vaupotic (Marko.Vaupotic@aviatnet.com)";

    description
      "This is a module for the entities in
     a generic microwave system.

     Copyright (c) 2019 IETF Trust and the persons identified as
     authors of the code.  All rights reserved.

     Redistribution and use in source and binary forms, with or
     without modification, is permitted pursuant to, and subject
     to the license terms contained in, the Simplified BSD License
     set forth in Section 4.c of the IETF Trust's Legal Provisions
     Relating to IETF Documents
     (http://trustee.ietf.org/license-info).
     This version of this YANG module is part of RFC 8561; see
     the RFC itself for full legal notices.";

    revision "2019-06-19" {
      description "Initial revision.";
      reference
        "RFC 8561: A YANG Data Model for Microwave Radio Link";

    }


    feature xpic {
      description
        "Indicates that the device supports XPIC.";
      reference
        "ETSI TR 102 311";

    }

    feature mimo {
      description
        "Indicates that the device supports MIMO.";
      reference
        "ETSI TR 102 311";

    }

    feature tdm {
      description
        "Indicates that the device supports TDM.";
    }

    typedef power {
      type decimal64 {
        fraction-digits 1;
      }
      description
        "Type used for the power values in the data nodes
       for configuration or status.";
    }

    container radio-link-protection-groups {
      description
        "Configuration of radio link protected groups of
       carrier terminations in a radio link.  More than one
       protected group per radio link terminal is allowed.";
      list protection-group {
        key "name";
        description
          "List of protected groups of interfaces
in a higher-layer interface.";
        action manual-switch-working {
          description
            "A switch action initiated by an operator command.
It switches a normal traffic signal to the working
transport entity.";
          reference
            "ITU-T G.808.1";

        }  // rpc manual-switch-working

        action manual-switch-protection {
          description
            "A switch action initiated by an operator command.
It switches a normal traffic signal to the protection
transport entity.";
          reference
            "ITU-T G.808.1";

        }  // rpc manual-switch-protection

        action forced-switch {
          description
            "A switch action initiated by an operator command.
It switches a normal traffic signal to the protection
transport entity and forces it to remain on that
entity even when criteria for switching back to
the original entity are fulfilled.";
          reference
            "ITU-T G.808.1";

        }  // rpc forced-switch

        action lockout-of-protection {
          description
            "A switch action temporarily disables access to the
protection transport entity for all signals.";
          reference
            "ITU-T G.808.1";

        }  // rpc lockout-of-protection

        action freeze {
          description
            "A switch action temporarily prevents any switch action
to be taken and, as such, freezes the current state.
Until the freeze is cleared, additional near-end external
commands are rejected, and fault condition changes and
received Automatic Protection-Switching (APS) messages
are ignored.";
          reference
            "ITU-T G.808.1";

        }  // rpc freeze

        action exercise {
          description
            "A switch action to test if the APS communication is
operating correctly.  It is lower priority than any 'real'
switch request.";
          reference
            "ITU-T G.808.1";

        }  // rpc exercise

        action clear {
          description
            "An action clears all switch commands.";
          reference
            "ITU-T G.808.1";

        }  // rpc clear

        leaf name {
          type string;
          description
            "Name used for identification of the protection group.";
        }

        leaf protection-architecture-type {
          type identityref {
            base protection-architecture-type;
          }
          default "ifprot:one-plus-one-type";
          description
            "The type of protection architecture used, e.g., one
interface protecting one or several other interfaces.";
          reference
            "ITU-T G.808.1";

        }

        leaf-list members {
          type if:interface-ref;
          must
            "derived-from-or-self(/if:interfaces/if:interface[if:name = current()]/if:type, 'ianaift:microwaveCarrierTermination')" {
            description
              "The type of a protection member must be
'microwaveCarrierTermination'.";
          }
          min-elements 2;
          description
            "Association to a group of interfaces configured for
protection and used by a higher-layer interface.";
        }

        leaf operation-type {
          type enumeration {
            enum "non-revertive" {
              value 0;
              description
                "In non-revertive operation, the traffic does not
return to the working interface if the switch requests
are terminated.";
              reference
                "ITU-T G.808.1";

            }
            enum "revertive" {
              value 1;
              description
                "In revertive operation, the traffic always
returns to (or remains on) the working interface
if the switch requests are terminated.";
              reference
                "ITU-T G.808.1";

            }
          }
          default "non-revertive";
          description
            "The type of protection operation, i.e., revertive
or non-revertive operation.";
        }

        leaf-list working-entity {
          when
            "../operation-type = 'revertive'";
          type if:interface-ref;
          must
            "derived-from-or-self(/if:interfaces/if:interface[if:name = current()]/if:type, 'ianaift:microwaveCarrierTermination')" {
            description
              "The type of a working-entity must be
'microwaveCarrierTermination'.";
          }
          min-elements 1;
          description
            "The interfaces that the traffic normally should
be transported over when there is no need to use the
protecting interface.";
        }

        leaf revertive-wait-to-restore {
          when
            "../operation-type = 'revertive'";
          type uint16;
          units "seconds";
          default "0";
          description
            "The time to wait before switching back to the working
interface if operation-type is revertive.";
          reference
            "ITU-T G.808.1";

        }

        leaf hold-off-timer {
          type uint16;
          units "milliseconds";
          default "0";
          description
            "Time interval after the detection of a fault and its
confirmation as a condition requiring the protection-
switching procedure.";
          reference
            "ITU-T G.808.1";

        }

        leaf status {
          type identityref {
            base protection-states;
          }
          config false;
          description
            "Status of the protection in a group of interfaces
configured in a protection mode.";
          reference
            "ITU-T G.808.1";

        }
      }  // list protection-group
    }  // container radio-link-protection-groups

    container xpic-pairs {
      if-feature xpic;
      description
        "Configuration of carrier termination pairs
       for operation in XPIC mode.";
      reference
        "ETSI TR 102 311";

      list xpic-pair {
        key "name";
        description
          "List of carrier termination pairs in XPIC mode.";
        leaf name {
          type string;
          description
            "Name used for identification of the XPIC pair.";
        }

        leaf enabled {
          type boolean;
          default "false";
          description
            "Enable(true)/disable(false) XPIC";
        }

        leaf-list members {
          type if:interface-ref;
          must
            "derived-from-or-self(/if:interfaces/if:interface"
              + "[if:name = current()]"
              + "/if:type, 'ianaift:microwaveCarrierTermination')" {
            description
              "The type of a member must be
             'microwaveCarrierTermination'.";
          }
          min-elements 2;
          max-elements 2;
          description
            "Association to XPIC pairs used in the radio link
           terminal.";
        }
      }  // list xpic-pair
    }  // container xpic-pairs

    container mimo-groups {
      if-feature mimo;
      description
        "Configuration of carrier terminations
       for operation in MIMO mode.";
      reference
        "ETSI TR 102 311";

      list mimo-group {
        key "name";
        description
          "List of carrier terminations in MIMO mode.";
        leaf name {
          type string;
          description
            "Name used for identification of the MIMO group.";
        }

        leaf enabled {
          type boolean;
          default "false";
          description
            "Enable(true)/disable(false) MIMO.";
        }

        leaf-list members {
          type if:interface-ref;
          must
            "derived-from-or-self(/if:interfaces/if:interface"
              + "[if:name = current()]"
              + "/if:type, 'ianaift:microwaveCarrierTermination')" {
            description
              "The type of a member must be
             'microwaveCarrierTermination'.";
          }
          min-elements 2;
          description
            "Association to a MIMO group if used in the radio
           link terminal.";
        }
      }  // list mimo-group
    }  // container mimo-groups
  }  // module ietf-microwave-radio-link