Internet Engineering Task Force (IETF)                        J. Ahlberg
Request for Comments: 8561                                   Ericsson AB
Category: Standards Track                                          M. Ye
ISSN: 2070-1721                                      Huawei Technologies
                                                                  X. Li
                                                NEC Laboratories Europe
                                                           D. Spreafico
                                                             Nokia - IT
                                                            M. Vaupotic
                                                         Aviat Networks
                                                              June 2019


              A YANG Data Model for Microwave Radio Link

Abstract

  This document defines a YANG data model for control and management of
  radio link interfaces and their connectivity to packet (typically
  Ethernet) interfaces in a microwave/millimeter wave node.  The data
  nodes for management of the interface protection functionality is
  broken out into a separate and generic YANG data model in order to
  make it available for other interface types as well.

Status of This Memo

  This is an Internet Standards Track document.

  This document is a product of the Internet Engineering Task Force
  (IETF).  It represents the consensus of the IETF community.  It has
  received public review and has been approved for publication by the
  Internet Engineering Steering Group (IESG).  Further information on
  Internet Standards is available in Section 2 of RFC 7841.

  Information about the current status of this document, any errata,
  and how to provide feedback on it may be obtained at
  https://www.rfc-editor.org/info/rfc8561.














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Copyright Notice

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

  This document is subject to BCP 78 and the IETF Trust's Legal
  Provisions Relating to IETF Documents
  (https://trustee.ietf.org/license-info) in effect on the date of
  publication of this document.  Please review these documents
  carefully, as they describe your rights and restrictions with respect
  to this document.  Code Components extracted from this document must
  include Simplified BSD License text as described in Section 4.e of
  the Trust Legal Provisions and are provided without warranty as
  described in the Simplified BSD License.

Table of Contents

  1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
    1.1.  Terminology and Definitions . . . . . . . . . . . . . . .   3
    1.2.  Tree Structure  . . . . . . . . . . . . . . . . . . . . .   5
  2.  Microwave Radio Link YANG Data Model  . . . . . . . . . . . .   5
    2.1.  YANG Tree . . . . . . . . . . . . . . . . . . . . . . . .   5
    2.2.  Explanation of the Microwave Data Model . . . . . . . . .   7
  3.  Microwave Radio Link YANG Data Model  . . . . . . . . . . . .   7
  4.  Interface Protection YANG Data Model  . . . . . . . . . . . .  27
  5.  Microwave Types YANG Data Model . . . . . . . . . . . . . . .  33
  6.  Security Considerations . . . . . . . . . . . . . . . . . . .  40
  7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  42
  8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  43
    8.1.  Normative References  . . . . . . . . . . . . . . . . . .  43
    8.2.  Informative References  . . . . . . . . . . . . . . . . .  44
  Appendix A.  Example: 1+0 and 2+0 Configuration Instances . . . .  47
    A.1.  1+0 Instance  . . . . . . . . . . . . . . . . . . . . . .  47
    A.2.  2+0 Instance  . . . . . . . . . . . . . . . . . . . . . .  49
    A.3.  2+0 XPIC Instance . . . . . . . . . . . . . . . . . . . .  50
  Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .  52
  Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  53














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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


1.  Introduction

  This document defines a YANG data model for management and control of
  the radio link interface(s) and the relationship to packet (typically
  Ethernet) and/or Time-Division Multiplexing (TDM) interfaces in a
  microwave/millimeter wave node.  The ETSI EN 302 217 series defines
  the characteristics and requirements of microwave/millimeter wave
  equipment and antennas.  Specifically, ETSI EN 302 217-2 [EN302217-2]
  specifies the essential parameters for systems operating from 1.4 GHz
  to 86 GHz.  The data model includes configuration and state data
  according to the new Network Management Datastore Architecture
  [RFC8342].

  The design of the data model follows the framework for management and
  control of microwave and millimeter wave interface parameters defined
  in [RFC8432].  This framework identifies the need and the scope of
  the YANG data model, use cases, and requirements that the model needs
  to support.  Moreover, it provides a detailed gap analysis to
  identify the missing parameters and functionalities of the existing
  and established models to support the specified use cases and
  requirements, and based on that, it recommends how the gaps should be
  filled with the development of the new model.  According to the
  conclusion of the gap analysis, the structure of the data model is
  based on the structure defined in [MICROWAVE-RADIO-LINK], and it
  augments [RFC8343] to align with the same structure for management of
  the packet interfaces.  More specifically, the model will include
  interface layering to manage the capacity provided by a radio link
  terminal for the associated Ethernet and TDM interfaces, using the
  principles for interface layering described in [RFC8343] as a basis.

  The data nodes for management of the interface protection
  functionality is broken out into a separate and generic YANG data
  module in order to make it also available for other interface types.

  The designed YANG data model uses established microwave equipment and
  radio standards, such as ETSI EN 302 217-2; the IETF Radio Link Model
  [MICROWAVE-RADIO-LINK]; and the ONF Microwave Model [ONF-model], as
  the basis for the definition of the detailed leafs/parameters, and it
  proposes new ones to cover identified gaps, which are analyzed in
  [RFC8432].

1.1.  Terminology and Definitions

  The following terms are used in this document:

  Carrier Termination (CT) is an interface for the capacity provided
  over the air by a single carrier.  It is typically defined by its
  transmitting and receiving frequencies.



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


  Radio Link Terminal (RLT) is an interface providing packet capacity
  and/or TDM capacity to the associated Ethernet and/or TDM interfaces
  in a node and is used for setting up a transport service over a
  microwave/millimeter wave link.

  The following acronyms are used in this document:

      ACM:  Adaptive Coding Modulation

      ATPC: Automatic Transmitter Power Control

      BBE:  Background Block Error

      BER:  Bit Error Ratio

      BPSK: Binary Phase-Shift Keying

      CM:   Coding Modulation

      CT:   Carrier Termination

      ES:   Errored Seconds

      IF:   Intermediate Frequency

      MIMO: Multiple Input Multiple Output

      RF:   Radio Frequency

      RLT:  Radio Link Terminal

      QAM:  Quadrature Amplitude Modulation

      QPSK: Quadrature Phase-Shift Keying

      RTPC: Remote Transmit Power Control

      SES:  Severely Errored Seconds

      TDM:  Time-Division Multiplexing

      UAS:  Unavailable Seconds

      XPIC: Cross Polarization Interference Cancellation







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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


1.2.  Tree Structure

  A simplified graphical representation of the data model is used in
  Section 2.1 of this document.  The meaning of the symbols in these
  diagrams is defined in [RFC8340].

2.  Microwave Radio Link YANG Data Model

2.1.  YANG Tree

    module: ietf-microwave-radio-link
      +--rw radio-link-protection-groups
      |  +--rw protection-group* [name]
      |     +--rw name                            string
      |     +--rw protection-architecture-type?   identityref
      |     +--rw members*                        if:interface-ref
      |     +--rw operation-type?                 enumeration
      |     +--rw working-entity*                 if:interface-ref
      |     +--rw revertive-wait-to-restore?      uint16
      |     +--rw hold-off-timer?                 uint16
      |     +--ro status?                         identityref
      |     +---x manual-switch-working
      |     +---x manual-switch-protection
      |     +---x forced-switch
      |     +---x lockout-of-protection
      |     +---x freeze
      |     +---x exercise
      |     +---x clear
      +--rw xpic-pairs {xpic}?
      |  +--rw xpic-pair* [name]
      |     +--rw name       string
      |     +--rw enabled?   boolean
      |     +--rw members*   if:interface-ref
      +--rw mimo-groups {mimo}?
         +--rw mimo-group* [name]
            +--rw name       string
            +--rw enabled?   boolean
            +--rw members*   if:interface-ref
    augment /if:interfaces/if:interface:
      +--rw id?                     string
      +--rw mode                    identityref
      +--rw carrier-terminations*   if:interface-ref
      +--rw rlp-groups*
      |       -> /radio-link-protection-groups/protection-group/name
      +--rw xpic-pairs*             -> /xpic-pairs/xpic-pair/name
      |       {xpic}?
      +--rw mimo-groups*            -> /mimo-groups/mimo-group/name
      |       {mimo}?



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      +--rw tdm-connections* [tdm-type] {tdm}?
         +--rw tdm-type             identityref
         +--rw tdm-connections      uint16
    augment /if:interfaces/if:interface:
      +--rw carrier-id?                     string
      +--rw tx-enabled?                     boolean
      +--ro tx-oper-status?                 enumeration
      +--rw tx-frequency                    uint32
      +--rw (freq-or-distance)
      |  +--:(rx-frequency)
      |  |  +--rw rx-frequency?                   uint32
      |  +--:(duplex-distance)
      |     +--rw duplex-distance?                int32
      +--ro actual-rx-frequency?            uint32
      +--ro actual-duplex-distance?         uint32
      +--rw channel-separation              uint32
      +--rw polarization?                   enumeration
      +--rw (power-mode)
      |  +--:(rtpc)
      |  |  +--rw rtpc
      |  |     +--rw maximum-nominal-power        power
      |  +--:(atpc)
      |     +--rw atpc
      |        +--rw maximum-nominal-power        power
      |        +--rw atpc-lower-threshold         power
      |        +--rw atpc-upper-threshold         power
      +--ro actual-transmitted-level?             power
      +--ro actual-received-level?                power
      +--rw (coding-modulation-mode)
      |  +--:(single)
      |  |  +--rw single
      |  |     +--rw selected-cm            identityref
      |  +--:(adaptive)
      |     +--rw adaptive
      |        +--rw selected-min-acm       identityref
      |        +--rw selected-max-acm       identityref
      +--ro actual-tx-cm?                   identityref
      +--ro actual-snir?                    decimal64
      +--ro actual-xpi?                     decimal64 {xpic}?
      +--rw ct-performance-thresholds
      |  +--rw received-level-alarm-threshold?      power
      |  +--rw transmitted-level-alarm-threshold?   power
      |  +--rw ber-alarm-threshold?                 enumeration
      +--rw if-loop?                        enumeration
      +--rw rf-loop?                        enumeration






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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


      +--ro capabilities
      |  +--ro min-tx-frequency?          uint32
      |  +--ro max-tx-frequency?          uint32
      |  +--ro min-rx-frequency?          uint32
      |  +--ro max-rx-frequency?          uint32
      |  +--ro minimum-power?             power
      |  +--ro maximum-available-power?   power
      |  +--ro available-min-acm?         identityref
      |  +--ro available-max-acm?         identityref
      +--ro error-performance-statistics
      |  +--ro bbe?   yang:counter32
      |  +--ro es?    yang:counter32
      |  +--ro ses?   yang:counter32
      |  +--ro uas?   yang:counter32
      +--ro radio-performance-statistics
         +--ro min-rltm?   power
         +--ro max-rltm?   power
         +--ro min-tltm?   power
         +--ro max-tltm?   power

2.2.  Explanation of the Microwave Data Model

  The leafs in the Interface Management Module augmented by RLT and CT
  are not always applicable.

  "/interfaces/interface/enabled" is not applicable for RLT.  Enable
  and disable of an interface is done in the constituent CTs.

  The packet-related measurements "in-octets", "in-unicast-pkts",
  "in-broadcast-pkts", "in-multicast-pkts", "in-discards", "in-errors",
  "in-unknown-protos", "out-octets", "out-unicast-pkts", "out-
  broadcast-pkts", "out-multicast-pkts", "out-discards", and "out-
  errors" are not within the scope of the microwave radio link domain
  and therefore are not applicable for RLT and CT.

3.  Microwave Radio Link YANG Data Model

  This module imports typedefs and modules from [RFC6991], [RFC8343]
  and [RFC7224], and it references [TR102311], [EN302217-1],
  [EN301129], and [G.826].

  <CODE BEGINS> file "[email protected]"

  module ietf-microwave-radio-link {
    yang-version 1.1;
    namespace "urn:ietf:params:xml:ns:yang:ietf-microwave-radio-link";
    prefix mrl;




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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


    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:[email protected]>

       Editors:
        Jonas Ahlberg ([email protected])
        Min Ye ([email protected])
        Xi Li ([email protected])
        Daniela Spreafico ([email protected])
        Marko Vaupotic ([email protected])";
    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).



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


       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";
    }

    /*
     * Features
     */

    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.";
    }

    /*
     * Typedefs
     */

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






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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


    /*
     * Radio Link Terminal (RLT)
     */

    augment "/if:interfaces/if:interface" {
      when "derived-from-or-self(if:type,"
         + "'ianaift:microwaveRadioLinkTerminal')";
      description
        "Addition of data nodes for the radio link terminal to
         the standard Interface data model, for interfaces of
         the type 'microwaveRadioLinkTerminal'.";
      leaf id {
        type string;
        description
          "Descriptive identity of the radio link terminal used by
           far-end RLT to check that it's connected to the correct
           near-end RLT.  Does not need to be configured if this
           check is not used.";
      }
      leaf mode {
        type identityref {
          base mw-types:rlt-mode;
        }
        mandatory true;
        description
          "A description of the mode in which the radio link
           terminal is configured.  The format is X plus Y.
           X represents the number of bonded carrier terminations.
           Y represents the number of protecting carrier
           terminations.";
      }
      leaf-list carrier-terminations {
        type if:interface-ref;
        must "derived-from-or-self(/if:interfaces/if:interface"
           + "[if:name = current()]"
           + "/if:type, 'ianaift:microwaveCarrierTermination')" {
          description
            "The type of interface must be
             'microwaveCarrierTermination'.";
        }
        min-elements 1;
        description
          "A list of references to carrier terminations
           included in the radio link terminal.";
      }






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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


      leaf-list rlp-groups {
        type leafref {
          path "/mrl:radio-link-protection-groups/"
             + "mrl:protection-group/mrl:name";
        }
        description
          "A list of references to the carrier termination
           groups configured for radio link protection in this
           radio link terminal.";
      }
      leaf-list xpic-pairs {
        if-feature "xpic";
        type leafref {
          path "/mrl:xpic-pairs/mrl:xpic-pair/mrl:name";
        }
        description
          "A list of references to the XPIC pairs used in this
           radio link terminal.  One pair can be used by two
           terminals.";
        reference
          "ETSI TR 102 311";
      }
      leaf-list mimo-groups {
        if-feature "mimo";
        type leafref {
          path "/mrl:mimo-groups/mrl:mimo-group/mrl:name";
        }
        description
          "A reference to the MIMO group used in this
           radio link terminal.  One group can be used by more
           than one terminal.";
        reference
          "ETSI TR 102 311";
      }
      list tdm-connections {
        if-feature "tdm";
        key "tdm-type";
        description
          "A list stating the number of active TDM connections
           of a specified tdm-type that is configured to be
           supported by the RLT.";
        leaf tdm-type {
          type identityref {
            base mw-types:tdm-type;
          }
          description
            "The type of TDM connection, which also indicates
             the supported capacity.";



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


        }
        leaf tdm-connections {
          type uint16;
          mandatory true;
          description
            "Number of connections of the specified type.";
        }
      }
    }

    /*
     * Carrier Termination
     */

    augment "/if:interfaces/if:interface" {
      when "derived-from-or-self(if:type,"
         + "'ianaift:microwaveCarrierTermination')";
      description
        "Addition of data nodes for carrier termination to
         the standard Interface data model, for interfaces
         of the type 'microwaveCarrierTermination'.";
      leaf carrier-id {
        type string;
        default "A";
        description
          "ID of the carrier (e.g., A, B, C, or D).
           Used in XPIC and MIMO configurations to check that
           the carrier termination is connected to the correct
           far-end carrier termination.  Should be the same
           carrier ID on both sides of the hop.  Left as
           default value when MIMO and XPIC are not in use.";
      }
      leaf tx-enabled {
        type boolean;
        default "false";
        description
          "Disables (false) or enables (true) the transmitter.
           Only applicable when the interface is enabled
           (interface:enabled = true); otherwise, it's always
           disabled.";
      }
      leaf tx-oper-status {
        type enumeration {
          enum off {
            description
              "Transmitter is off.";
          }
          enum on {



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


            description
              "Transmitter is on.";
          }
          enum standby {
            description
              "Transmitter is in standby.";
          }
        }
        config false;
        description
          "Shows the operative status of the transmitter.";
      }
      leaf tx-frequency {
        type uint32;
        units "kHz";
        mandatory true;
        description
          "Selected transmitter frequency.";
      }
      choice freq-or-distance {
        leaf rx-frequency {
          type uint32;
          units "kHz";
          description
            "Selected receiver frequency.";
        }
        leaf duplex-distance {
          type int32;
          units "kHz";
          description
            "Distance between transmitter and receiver frequencies.";
        }
        mandatory true;
        description
          "A choice to configure rx-frequency directly or compute
           it as duplex-distance subtracted from tx-frequency.";
      }
      leaf actual-rx-frequency {
        type uint32;
        units "kHz";
        config false;
        description
          "Computed receiver frequency.";
      }
      leaf actual-duplex-distance {
        type uint32;
        units "kHz";
        config false;



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


        description
          "Computed distance between Tx and Rx frequencies.";
      }
      leaf channel-separation {
        type uint32;
        units "kHz";
        mandatory true;
        description
          "The amount of bandwidth allocated to a carrier.  The
           distance between adjacent channels in a radio
           frequency channels arrangement";
        reference
          "ETSI EN 302 217-1";
      }
      leaf polarization {
        type enumeration {
          enum horizontal {
            description
              "Horizontal polarization.";
          }
          enum vertical {
            description
              "Vertical polarization.";
          }
          enum not-specified {
            description
              "Polarization not specified.";
          }
        }
        default "not-specified";
        description
          "Polarization - a textual description for info only.";
      }
      choice power-mode {
        container rtpc {
          description
            "Remote Transmit Power Control (RTPC).";
          reference
            "ETSI EN 302 217-1";
          leaf maximum-nominal-power {
            type power {
              range "-99..99";
            }
            units "dBm";
            mandatory true;
            description
              "Selected output power.";




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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


            reference
              "ETSI EN 302 217-1";
          }
        }
        container atpc {
          description
            "Automatic Transmitter Power Control (ATPC).";
          reference
            "ETSI EN 302 217-1";
          leaf maximum-nominal-power {
            type power {
              range "-99..99";
            }
            units "dBm";
            mandatory true;
            description
              "Selected maximum output power.  Minimum output
               power is the same as the system capability,
               minimum-power.";
            reference
              "ETSI EN 302 217-1";
          }
          leaf atpc-lower-threshold {
            type power {
              range "-99..-20";
            }
            units "dBm";
            must 'current() <= ../atpc-upper-threshold';
            mandatory true;
            description
              "The lower threshold for the input power at the
               far end, which is used in the ATPC mode.";
            reference
              "ETSI EN 302 217-1";
          }
          leaf atpc-upper-threshold {
            type power {
              range "-99..-20";
            }
            units "dBm";
            mandatory true;
            description
              "The upper threshold for the input power at the
               far end, which is used in the ATPC mode.";
            reference
              "ETSI EN 302 217-1";
          }
        }



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


        mandatory true;
        description
          "A choice of RTPC or ATPC.";
      }
      leaf actual-transmitted-level {
        type power {
          range "-99..99";
        }
        units "dBm";
        config false;
        description
          "Actual transmitted power level (0.1 dBm resolution).";
        reference
          "ETSI EN 301 129";
      }
      leaf actual-received-level {
        type power {
          range "-99..-20";
        }
        units "dBm";
        config false;
        description
          "Actual received power level (0.1 dBm resolution).";
        reference
          "ETSI EN 301 129";
      }
      choice coding-modulation-mode {
        container single {
          description
            "A single modulation order only.";
          reference
            "ETSI EN 302 217-1";
          leaf selected-cm {
            type identityref {
              base mw-types:coding-modulation;
            }
            mandatory true;
            description
              "Selected the single coding/modulation.";
          }
        }
        container adaptive {
          description
            "Adaptive coding/modulation.";
          reference
            "ETSI EN 302 217-1";





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          leaf selected-min-acm {
            type identityref {
              base mw-types:coding-modulation;
            }
            mandatory true;
            description
              "Selected minimum coding/modulation.
               Adaptive coding/modulation shall not go
               below this value.";
          }
          leaf selected-max-acm {
            type identityref {
              base mw-types:coding-modulation;
            }
            mandatory true;
            description
              "Selected maximum coding/modulation.
               Adaptive coding/modulation shall not go
               above this value.";
          }
        }
        mandatory true;
        description
          "A selection of single or
           adaptive coding/modulation mode.";
      }
      leaf actual-tx-cm {
        type identityref {
          base mw-types:coding-modulation;
        }
        config false;
        description
          "Actual coding/modulation in transmitting direction.";
      }
      leaf actual-snir {
        type decimal64 {
          fraction-digits 1;
          range "0..99";
        }
        units "dB";
        config false;
        description
          "Actual signal to noise plus the interference ratio
           (0.1 dB resolution).";
      }
      leaf actual-xpi {
        if-feature "xpic";
        type decimal64 {



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          fraction-digits 1;
          range "0..99";
        }
        units "dB";
        config false;
        description
          "The actual carrier to cross-polar interference.
           Only valid if XPIC is enabled (0.1 dB resolution).";
        reference
          "ETSI TR 102 311";
      }
      container ct-performance-thresholds {
        description
          "Specification of thresholds for when alarms should
           be sent and cleared for various performance counters.";
        leaf received-level-alarm-threshold {
          type power {
            range "-99..-20";
          }
          units "dBm";
          default "-99";
          description
            "An alarm is sent when the received power level is
             below the specified threshold.";
          reference
            "ETSI EN 301 129";
        }
        leaf transmitted-level-alarm-threshold {
          type power {
            range "-99..99";
          }
          units "dBm";
          default "-99";
          description
            "An alarm is sent when the transmitted power level
             is below the specified threshold.";
          reference
            "ETSI EN 301 129";
        }
        leaf ber-alarm-threshold {
          type enumeration {
            enum 1e-9 {
              description
                "Threshold at 1e-9 (10^-9).";
            }
            enum 1e-8 {
              description
                "Threshold at 1e-8 (10^-8).";



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            }
            enum 1e-7 {
              description
                "Threshold at 1e-7 (10^-7).";
            }
            enum 1e-6 {
              description
                "Threshold at 1e-6 (10^-6).";
            }
            enum 1e-5 {
              description
                "Threshold at 1e-5 (10^-5).";
            }
            enum 1e-4 {
              description
                "Threshold at 1e-4 (10^-4).";
            }
            enum 1e-3 {
              description
                "Threshold at 1e-3 (10^-3).";
            }
            enum 1e-2 {
              description
                "Threshold at 1e-2 (10^-2).";
            }
            enum 1e-1 {
              description
                "Threshold at 1e-1 (10^-1).";
            }
          }
          default "1e-6";
          description
            "Specification of at which BER an alarm should
             be raised.";
          reference
            "ETSI EN 302 217-1";
        }
      }
      leaf if-loop {
        type enumeration {
          enum disabled {
            description
              "Disables the IF Loop.";
          }
          enum client {
            description
              "Loops the signal back to the client side.";
          }



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


          enum radio {
            description
              "Loops the signal back to the radio side.";
          }
        }
        default "disabled";
        description
          "Enable (client/radio) or disable (disabled)
           the IF Loop, which loops the signal back to
           the client side or the radio side.";
      }
      leaf rf-loop {
        type enumeration {
          enum disabled {
            description
              "Disables the RF Loop.";
          }
          enum client {
            description
              "Loops the signal back to the client side.";
          }
          enum radio {
            description
              "Loops the signal back to the radio side.";
          }
        }
        default "disabled";
        description
          "Enable (client/radio) or disable (disabled)
           the RF loop, which loops the signal back to
           the client side or the radio side.";
      }
      container capabilities {
        config false;
        description
          "Capabilities of the installed equipment and
           some selected configurations.";
        leaf min-tx-frequency {
          type uint32;
          units "kHz";
          description
            "Minimum Tx frequency possible to use.";
        }
        leaf max-tx-frequency {
          type uint32;
          units "kHz";
          description
            "Maximum Tx frequency possible to use.";



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


        }
        leaf min-rx-frequency {
          type uint32;
          units "kHz";
          description
            "Minimum Rx frequency possible to use.";
        }
        leaf max-rx-frequency {
          type uint32;
          units "kHz";
          description
            "Maximum Tx frequency possible to use.";
        }
        leaf minimum-power {
          type power;
          units "dBm";
          description
            "The minimum output power supported.";
          reference
            "ETSI EN 302 217-1";
        }
        leaf maximum-available-power {
          type power;
          units "dBm";
          description
            "The maximum output power supported.";
          reference
            "ETSI EN 302 217-1";
        }
        leaf available-min-acm {
          type identityref {
            base mw-types:coding-modulation;
          }
          description
            "Minimum coding-modulation possible to use.";
        }
        leaf available-max-acm {
          type identityref {
            base mw-types:coding-modulation;
          }
          description
            "Maximum coding-modulation possible to use.";
        }
      }
      container error-performance-statistics {
        config false;





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        description
          "ITU-T G.826 error performance statistics relevant for
           a microwave/millimeter wave carrier.";
        leaf bbe {
          type yang:counter32;
          units "number of block errors";
          description
            "Number of Background Block Errors (BBEs).  A BBE is an
             errored block not occurring as part of Severely Errored
             Seconds (SES).  Discontinuities in the value of this
             counter can occur at re-initialization of the management
             system and at other times as indicated by the value of
             'discontinuity-time' in ietf-interfaces.";
          reference
            "ITU-T G.826";
        }
        leaf es {
          type yang:counter32;
          units "seconds";
          description
            "Number of Errored Seconds (ES).  An ES is a one-second
             period with one or more errored blocks or at least one
             defect.  Discontinuities in the value of this counter
             can occur at re-initialization of the management system
             and at other times as indicated by the value of
             'discontinuity-time' in ietf-interfaces.";
          reference
            "ITU-T G.826";
        }
        leaf ses {
          type yang:counter32;
          units "seconds";
          description
            "Number of SES.  SES is a one-second period that contains
             equal or more than 30% errored blocks or at least
             one defect.  SES is a subset of ES.  Discontinuities in
             the value of this counter can occur at re-initialization
             of the management system and at other times as indicated
             by the value of 'discontinuity-time' in ietf-interfaces.";
          reference
            "ITU-T G.826";
        }
        leaf uas {
          type yang:counter32;
          units "seconds";
          description
            "Number of Unavailable Seconds (UAS); that is, the
             total time that the node has been unavailable.



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


             Discontinuities in the value of this counter can occur
             at re-initialization of the management system and at
             other times as indicated by the value of
             'discontinuity-time' in ietf-interfaces.";
          reference
            "ITU-T G.826";
        }
      }
      container radio-performance-statistics {
        config false;
        description
          "ETSI EN 301 129 radio physical interface statistics relevant
           for a carrier termination.";
        leaf min-rltm {
          type power {
            range "-99..-20";
          }
          units "dBm";
          description
            "Minimum received power level.  Discontinuities in the
             value of this counter can occur at re-initialization
             of the management system and at other times as
             indicated by the value of 'discontinuity-time' in
             ietf-interfaces.";
          reference
            "ETSI EN 301 129";
        }
        leaf max-rltm {
          type power {
            range "-99..-20";
          }
          units "dBm";
          description
            "Maximum received power level.  Discontinuities in the
             value of this counter can occur at re-initialization
             of the management system and at other times as
             indicated by the value of 'discontinuity-time' in
             ietf-interfaces.";
          reference
            "ETSI EN 301 129";
        }
        leaf min-tltm {
          type power {
            range "-99..99";
          }
          units "dBm";





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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


          description
            "Minimum transmitted power level.  Discontinuities
             in the value of this counter can occur at
             re-initialization of the management system and
             at other times as indicated by the value of
             'discontinuity-time' in ietf-interfaces.";
          reference
            "ETSI EN 301 129";
        }
        leaf max-tltm {
          type power {
            range "-99..99";
          }
          units "dBm";
          description
            "Maximum transmitted power level.  Discontinuities
             in the value of this counter can occur at
             re-initialization of the management system and
             at other times as indicated by the value of
             'discontinuity-time' in ietf-interfaces.";
          reference
            "ETSI EN 301 129";
        }
      }
    }

    /*
     * Radio Link Protection Groups
     */

    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.";
      uses ifprot:protection-groups {
        refine "protection-group/members" {
          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'.";
          }
        }
        refine "protection-group/working-entity" {
          must "derived-from-or-self(/if:interfaces/if:interface"
             + "[if:name = current()]"



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


             + "/if:type, 'ianaift:microwaveCarrierTermination')" {
            description
              "The type of a working-entity must be
               'microwaveCarrierTermination'.";
          }
        }
      }
    }

    /*
     * XPIC & MIMO groups - Configuration data nodes
     */

    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;





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          description
            "Association to XPIC pairs used in the radio link
             terminal.";
        }
      }
    }
    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.";
        }
      }
    }
  }

  <CODE ENDS>




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4.  Interface Protection YANG Data Model

  The data nodes for management of the interface protection
  functionality is broken out from the Microwave Radio Link Module into
  a separate and generic YANG data model in order to make it also
  available for other interface types.

  This module imports modules from [RFC8343], and it references
  [G.808.1].

  <CODE BEGINS> file "[email protected]"

  module ietf-interface-protection {
    yang-version 1.1;
    namespace "urn:ietf:params:xml:ns:yang:ietf-interface-protection";
    prefix ifprot;

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

    organization
      "Internet Engineering Task Force (IETF) CCAMP WG";
    contact
      "WG List: <mailto:[email protected]>

       Editors:
        Jonas Ahlberg ([email protected])
        Min Ye ([email protected])
        Xi Li ([email protected])
        Daniela Spreafico ([email protected])
        Marko Vaupotic ([email protected])";
    description
      "This is a module for the entities in
       a generic interface protection mechanism.

       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).




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       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";
    }

    /*
     * Protection architecture type identities
     */

    identity protection-architecture-type {
      description
        "protection architecture type";
      reference
        "ITU-T G.808.1";
    }

    identity one-plus-one-type {
      base protection-architecture-type;
      description
        "1+1; one interface protects
         another one interface.";
      reference
        "ITU-T G.808.1";
    }

    identity one-to-n-type {
      base protection-architecture-type;
      description
        "1:N; one interface protects
         n other interfaces.";
      reference
        "ITU-T G.808.1";
    }

    /*
     * Protection states identities
     */

    identity protection-states {
      description
        "Identities describing the status of the protection
         in a group of interfaces configured in
         a protection mode.";



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    }

    identity unprotected {
      base protection-states;
      description
        "Not protected.";
    }

    identity protected {
      base protection-states;
      description
        "Protected.";
    }

    identity unable-to-protect {
      base protection-states;
      description
        "Unable to protect.";
    }

    /*
     * Protection Groups
     */

    grouping protection-groups {
      description
        "Configuration of protected groups of interfaces
         providing protection for each other.  More than one
         protected group per higher-layer interface is allowed.";
      list protection-group {
        key "name";
        description
          "List of protected groups of interfaces
           in a higher-layer interface.";
        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.";




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          reference
            "ITU-T G.808.1";
        }
        leaf-list members {
          type if:interface-ref;
          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 {
              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 {
              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;
          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";



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          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";
        }
        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";
        }
        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";
        }
        action forced-switch {
          description
            "A switch action initiated by an operator command.
             It switches a normal traffic signal to the protection



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

  <CODE ENDS>








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5.  Microwave Types YANG Data Model

  This module defines a collection of common data types using the YANG
  data modeling language.  These common types are designed to be
  imported by other modules defined in the microwave area.

  <CODE BEGINS> file "[email protected]"

  module ietf-microwave-types {
    yang-version 1.1;
    namespace "urn:ietf:params:xml:ns:yang:ietf-microwave-types";
    prefix mw-types;

    organization
      "Internet Engineering Task Force (IETF) CCAMP WG";
    contact
      "WG List: <mailto:[email protected]>

       Editors:
        Jonas Ahlberg ([email protected])
        Min Ye ([email protected])
        Xi Li ([email protected])
        Daniela Spreafico ([email protected])
        Marko Vaupotic ([email protected])";
    description
      "This module contains a collection of YANG data types
       considered generally useful for microwave interfaces.

       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";
    }




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    /*
     * Radio-link-terminal mode identities
     */

    identity rlt-mode {
      description
        "A description of the mode in which the radio link
         terminal is configured.  The format is X plus Y.
         X represents the number of bonded carrier terminations.
         Y represents the number of protecting carrier
         terminations.";
    }

    identity one-plus-zero {
      base rlt-mode;
      description
        "1 carrier termination only.";
    }

    identity one-plus-one {
      base rlt-mode;
      description
        "1 carrier termination
         and 1 protecting carrier termination.";
    }

    identity two-plus-zero {
      base rlt-mode;
      description
        "2 bonded carrier terminations.";
    }

    /*
     * Coding and modulation identities
     */

    identity coding-modulation {
      description
        "The coding and modulation schemes.";
    }

    identity half-bpsk {
      base coding-modulation;
      description
        "Half BPSK coding and modulation scheme.";
    }





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    identity half-bpsk-strong {
      base half-bpsk;
      description
        "Half BPSK strong coding and modulation scheme.";
    }

    identity half-bpsk-light {
      base half-bpsk;
      description
        "Half BPSK light coding and modulation scheme.";
    }

    identity bpsk {
      base coding-modulation;
      description
        "BPSK coding and modulation scheme.";
    }

    identity bpsk-strong {
      base bpsk;
      description
        "BPSK strong coding and modulation scheme.";
    }

    identity bpsk-light {
      base bpsk;
      description
        "BPSK light coding and modulation scheme.";
    }

    identity qpsk {
      base coding-modulation;
      description
        "QPSK coding and modulation scheme.";
    }

    identity qam-4 {
      base coding-modulation;
      description
        "4 QAM coding and modulation scheme.";
    }

    identity qam-4-strong {
      base qam-4;
      description
        "4 QAM strong coding and modulation scheme.";
    }




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    identity qam-4-light {
      base qam-4;
      description
        "4 QAM light coding and modulation scheme.";
    }

    identity qam-16 {
      base coding-modulation;
      description
        "16 QAM coding and modulation scheme.";
    }

    identity qam-16-strong {
      base qam-16;
      description
        "16 QAM strong coding and modulation scheme.";
    }

    identity qam-16-light {
      base qam-16;
      description
        "16 QAM light coding and modulation scheme.";
    }

    identity qam-32 {
      base coding-modulation;
      description
        "32 QAM coding and modulation scheme.";
    }

    identity qam-32-strong {
      base qam-32;
      description
        "32 QAM strong coding and modulation scheme.";
    }

    identity qam-32-light {
      base qam-32;
      description
        "32 QAM light coding and modulation scheme.";
    }

    identity qam-64 {
      base coding-modulation;
      description
        "64 QAM coding and modulation scheme.";
    }




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    identity qam-64-strong {
      base qam-64;
      description
        "64 QAM strong coding and modulation scheme.";
    }

    identity qam-64-light {
      base qam-64;
      description
        "64 QAM light coding and modulation scheme.";
    }

    identity qam-128 {
      base coding-modulation;
      description
        "128 QAM coding and modulation scheme.";
    }

    identity qam-128-strong {
      base qam-128;
      description
        "128 QAM strong coding and modulation scheme.";
    }

    identity qam-128-light {
      base qam-128;
      description
        "128 QAM light coding and modulation scheme.";
    }

    identity qam-256 {
      base coding-modulation;
      description
        "256 QAM coding and modulation scheme.";
    }

    identity qam-256-strong {
      base qam-256;
      description
        "256 QAM strong coding and modulation scheme.";
    }

    identity qam-256-light {
      base qam-256;
      description
        "256 QAM light coding and modulation scheme.";
    }




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    identity qam-512 {
      base coding-modulation;
      description
        "512 QAM coding and modulation scheme.";
    }

    identity qam-512-strong {
      base qam-512;
      description
        "512 QAM strong coding and modulation scheme.";
    }

    identity qam-512-light {
      base qam-512;
      description
        "512 QAM light coding and modulation scheme.";
    }

    identity qam-1024 {
      base coding-modulation;
      description
        "1024 QAM coding and modulation scheme.";
    }

    identity qam-1024-strong {
      base qam-1024;
      description
        "1024 QAM strong coding and modulation scheme.";
    }

    identity qam-1024-light {
      base qam-1024;
      description
        "1024 QAM light coding and modulation scheme.";
    }

    identity qam-2048 {
      base coding-modulation;
      description
        "2048 QAM coding and modulation scheme.";
    }

    identity qam-2048-strong {
      base qam-2048;
      description
        "2048 QAM strong coding and modulation scheme.";
    }




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    identity qam-2048-light {
      base qam-2048;
      description
        "2048 QAM light coding and modulation scheme.";
    }

    identity qam-4096 {
      base coding-modulation;
      description
        "4096 QAM coding and modulation scheme.";
    }

    identity qam-4096-strong {
      base qam-4096;
      description
        "4096 QAM strong coding and modulation scheme.";
    }

    identity qam-4096-light {
      base qam-4096;
      description
        "4096 QAM light coding and modulation scheme.";
    }

    /*
     * TDM-type identities
     */

    identity tdm-type {
      description
        "A description of the type of TDM connection,
         also indicating the supported capacity of the
         connection.";
    }

    identity E1 {
      base tdm-type;
      description
        "E1 connection, 2.048 Mbit/s.";
    }

    identity STM-1 {
      base tdm-type;
      description
        "STM-1 connection, 155.52 Mbit/s.";
    }
  }




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  <CODE ENDS>

6.  Security Considerations

  The YANG data models specified in this document define schemas for
  data that is designed to be accessed via network management protocols
  such as NETCONF [RFC6241] or RESTCONF [RFC8040].  The lowest NETCONF
  layer is the secure transport layer, and the mandatory-to-implement
  secure transport is Secure Shell (SSH) [RFC6242].  The lowest
  RESTCONF layer is HTTPS, and the mandatory-to-implement secure
  transport is TLS [RFC8446].

  The Network Configuration Access Control Model (NACM) [RFC8341]
  provides the means to restrict access for particular NETCONF or
  RESTCONF users to a preconfigured subset of all available NETCONF or
  RESTCONF protocol operations and content.

  There are a number of data nodes defined in these YANG data models
  that are writable/creatable/deletable (i.e., config true, which is
  the default).  These data nodes may be considered sensitive or
  vulnerable in some network environments.  Write operations (e.g.,
  edit-config) to these data nodes without proper protection can have a
  negative effect on network operations.  These are the subtrees and
  data nodes and their sensitivity/vulnerability:

  Interfaces of type microwaveRadioLinkTerminal:

     /if:interfaces/if:interface/mode,
     /if:interfaces/if:interface/carrier-terminations,
     /if:interfaces/if:interface/rlp-groups,
     /if:interfaces/if:interface/xpic-pairs,
     /if:interfaces/if:interface/mimo-groups, and
     /if:interfaces/if:interface/tdm-connections:

  These data nodes represent the configuration of the radio link
  terminal, and they need to match the configuration of the radio link
  terminal on the other side of the radio link.  Unauthorized access to
  these data nodes could interrupt the ability to forward traffic.

  Interfaces of type microwaveCarrierTermination:

     /if:interfaces/if:interface/carrier-id,
     /if:interfaces/if:interface/tx-enabled,
     /if:interfaces/if:interface/tx-frequency,
     /if:interfaces/if:interface/rx-frequency,
     /if:interfaces/if:interface/duplex-distance,
     /if:interfaces/if:interface/channel-separation,
     /if:interfaces/if:interface/rtpc/maximum-nominal-power,



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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


     /if:interfaces/if:interface/atpc/maximum-nominal-power,
     /if:interfaces/if:interface/atpc/atpc-lower-threshold,
     /if:interfaces/if:interface/atpc/atpc-upper-threshold,
     /if:interfaces/if:interface/single/selected-cm,
     /if:interfaces/if:interface/adaptive/selected-min-acm,
     /if:interfaces/if:interface/adaptive/selected-max-acm,
     /if:interfaces/if:interface/if-loop, and
     /if:interfaces/if:interface/rf-loop:

  These data nodes represent the configuration of the carrier
  termination, and they need to match the configuration of the carrier
  termination on the other side of the carrier.  Unauthorized access to
  these data nodes could interrupt the ability to forward traffic.

  Radio link protection:

     /radio-link-protection-groups/protection-group:

  This data node represents the configuration of the protection of
  carrier terminations.  Unauthorized access to this data node could
  interrupt the ability to forward traffic or remove the ability to
  perform a necessary protection switch.

  XPIC:

     /xpic-pairs:

  This data node represents the XPIC configuration of a pair of
  carriers.  Unauthorized access to this data node could interrupt the
  ability to forward traffic.

  MIMO:

     /mimo-groups:

  This data node represents the MIMO configuration of multiple
  carriers.  Unauthorized access to this data node could interrupt the
  ability to forward traffic.

  Some of the RPC operations in this YANG data model may be considered
  sensitive or vulnerable in some network environments.  It is thus
  important to control access to these operations.  These are the
  operations and their sensitivity/vulnerability:








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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


  Radio link protection:

  /radio-link-protection-groups/protection-group/manual-switch-working,
  /radio-link-protection-groups/protection-group/
                                              manual-switch-protection,
  /radio-link-protection-groups/protection-group/forced-switch,
  /radio-link-protection-groups/protection-group/lockout-of-protection,
  /radio-link-protection-groups/protection-group/freeze,
  /radio-link-protection-groups/protection-group/exercise, and
  /radio-link-protection-groups/protection-group/clear

  These data nodes represent actions that might have an impact on the
  configuration of the protection of carrier terminations.
  Unauthorized access to these data nodes could interrupt the ability
  to forward traffic or remove the ability to perform a necessary
  protection switch.

  The security considerations of [RFC8343] also apply to this document.

7.  IANA Considerations

  IANA has assigned new URIs from the "IETF XML Registry" [RFC3688] as
  follows:

     URI: urn:ietf:params:xml:ns:yang:ietf-microwave-radio-link
     Registrant Contact: The IESG
     XML: N/A; the requested URI is an XML namespace.

     URI: urn:ietf:params:xml:ns:yang:ietf-interface-protection
     Registrant Contact: The IESG
     XML: N/A; the requested URI is an XML namespace.

     URI: urn:ietf:params:xml:ns:yang:ietf-microwave-types
     Registrant Contact: The IESG
     XML: N/A; the requested URI is an XML namespace.
















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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


  IANA has recorded YANG module names in the "YANG Module Names"
  registry [RFC6020] as follows:

     Name: ietf-microwave-radio-link
     Maintained by IANA?: N
     Namespace: urn:ietf:params:xml:ns:yang:ietf-microwave-radio-link
     Prefix: mrl
     Reference: RFC 8561

     Name: ietf-interface-protection
     Maintained by IANA?: N
     Namespace: urn:ietf:params:xml:ns:yang:ietf-interface-protection
     Prefix: ifprot
     Reference: RFC 8561

     Name: ietf-microwave-types
     Maintained by IANA?: N
     Namespace: urn:ietf:params:xml:ns:yang:ietf-microwave-types
     Prefix: mw-types
     Reference: RFC 8561

  IANA has registered the following ifTypes in "ifType definitions"
  under [IANA-SMI]:

  Decimal  Name                         Description
  -------  ------------                 -------------------------------
  295      microwaveCarrierTermination  air interface of a single
                                        microwave carrier

  296      microwaveRadioLinkTerminal   radio link interface for one
                                        or several aggregated microwave
                                        carriers

8.  References

8.1.  Normative References

  [IANA-SMI] IANA, "Structure of Management Information (SMI) Numbers
             (MIB Module Registrations)",
             <https://www.iana.org/assignments/smi-numbers>.

  [RFC3688]  Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688,
             DOI 10.17487/RFC3688, January 2004,
             <https://www.rfc-editor.org/info/rfc3688>.







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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


  [RFC6020]  Bjorklund, M., Ed., "YANG - A Data Modeling Language for
             the Network Configuration Protocol (NETCONF)", RFC 6020,
             DOI 10.17487/RFC6020, October 2010,
             <https://www.rfc-editor.org/info/rfc6020>.

  [RFC6241]  Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed.,
             and A. Bierman, Ed., "Network Configuration Protocol
             (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
             <https://www.rfc-editor.org/info/rfc6241>.

  [RFC6242]  Wasserman, M., "Using the NETCONF Protocol over Secure
             Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, June 2011,
             <https://www.rfc-editor.org/info/rfc6242>.

  [RFC6991]  Schoenwaelder, J., Ed., "Common YANG Data Types",
             RFC 6991, DOI 10.17487/RFC6991, July 2013,
             <https://www.rfc-editor.org/info/rfc6991>.

  [RFC7224]  Bjorklund, M., "IANA Interface Type YANG Module",
             RFC 7224, DOI 10.17487/RFC7224, May 2014,
             <https://www.rfc-editor.org/info/rfc7224>.

  [RFC8040]  Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF
             Protocol", RFC 8040, DOI 10.17487/RFC8040, January 2017,
             <https://www.rfc-editor.org/info/rfc8040>.

  [RFC8341]  Bierman, A. and M. Bjorklund, "Network Configuration
             Access Control Model", STD 91, RFC 8341,
             DOI 10.17487/RFC8341, March 2018,
             <https://www.rfc-editor.org/info/rfc8341>.

  [RFC8343]  Bjorklund, M., "A YANG Data Model for Interface
             Management", RFC 8343, DOI 10.17487/RFC8343, March 2018,
             <https://www.rfc-editor.org/info/rfc8343>.

  [RFC8446]  Rescorla, E., "The Transport Layer Security (TLS) Protocol
             Version 1.3", RFC 8446, DOI 10.17487/RFC8446, August 2018,
             <https://www.rfc-editor.org/info/rfc8446>.

8.2.  Informative References

  [EN301129] ETSI, "Transmission and Multiplexing (TM); Digital Radio
             Relay Systems (DRRS); Synchronous Digital Hierarchy (SDH);
             System performance monitoring parameters of SDH DRRS", EN
             301 129 V1.1.2, May 1999.






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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


  [EN302217-1]
             ETSI, "Fixed Radio Systems; Characteristics and
             requirements for point-to-point equipment and antennas;
             Part 1: Overview, common characteristics and system-
             dependent requirements", EN 302 217-1 V3.1.0, May 2017.

  [EN302217-2]
             ETSI, "Fixed Radio Systems; Characteristics and
             requirements for point to-point equipment and antennas;
             Part 2: Digital systems operating in frequency bands from
             1 GHz to 86 GHz; Harmonised Standard covering the
             essential requirements of article 3.2 of Directive
             2014/53/EU", EN 302 217-2 V3.1.1, May 2017.

  [G.808.1]  ITU-T, "SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL
             SYSTEMS AND NETWORKS; Digital networks ; General aspects
             Generic protection switching ; Linear trail and subnetwork
             protection", ITU-T Recommendation G.808.1, May 2014.

  [G.826]    ITU-T, "SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL
             SYSTEMS AND NETWORKS; Digital networks - Quality and
             availability targets; End-to-end error performance
             parameters and objectives for international, constant bit-
             rate digital paths and connections", ITU-T
             Recommendation G.826, December 2002.

  [MICROWAVE-RADIO-LINK]
             Ahlberg, J., Carlson, J., Lund, H., Olausson, T., Ye, M.,
             and M. Vaupotic, "Microwave Radio Link YANG Data Models",
             Work in Progress, draft-ahlberg-ccamp-microwave-radio-
             link-01, May 2016.

  [ONF-model]
             ONF, "Microwave Information Model", TR-532, version 1.0,
             December 2016,
             <https://www.opennetworking.org/images/stories/downloads/
             sdn-resources/technical-reports/
             TR-532-Microwave-Information-Model-V1.pdf>.

  [RFC8340]  Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams",
             BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
             <https://www.rfc-editor.org/info/rfc8340>.

  [RFC8342]  Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K.,
             and R. Wilton, "Network Management Datastore Architecture
             (NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018,
             <https://www.rfc-editor.org/info/rfc8342>.




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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


  [RFC8432]  Ahlberg, J., Ed., Ye, M., Ed., Li, X., Contreras, LM., and
             CJ. Bernardos, "A Framework for Management and Control of
             Microwave and Millimeter Wave Interface Parameters",
             RFC 8432, DOI 10.17487/RFC8432, October 2018,
             <https://www.rfc-editor.org/info/rfc8432>.

  [TR102311] ETSI, "Fixed Radio Systems; Point-to-point equipment;
             Specific aspects of the spatial frequency reuse method",
             ETSI TR 102 311 V1.2.1, November 2015.










































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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


Appendix A.  Example: 1+0 and 2+0 Configuration Instances

  This section gives simple examples of 1+0 and 2+0 instances using the
  YANG data model defined in this document.  The examples are not
  intended as a complete module for 1+0 and 2+0 configuration.

A.1.  1+0 Instance

                   /--------- Radio Link ---------\
                    Near End              Far End

             +---------------+           +---------------+
             |  Radio Link   |           | Radio Link    |
             |  Terminal A   |           | Terminal B    |
             |               |           |               |
             |               |           |               |
             | +-----------+ |           | +-----------+ |
             | |           | | Carrier A | |           | |
             | |  Carrier  | |<--------->| |  Carrier  | |
             | |Termination| |           | |Termination| |
             | |     1     | |           | |     1     | |
             | +-----------+ |           | +-----------+ |
             |               |           |               |
             |               |           |               |
             +---------------+           +---------------+

       \--- Microwave Node ---/          \--- Microwave Node ---/

                          Figure 1: 1+0 Example

  Figure 1 shows a 1+0 example.  The following instance shows the 1+0
  configuration of the Near End node.



















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     "interface": [
        {
          "name": "RLT-A",
          "description": "Radio Link Terminal A",
          "type": "microwaveRadioLinkTerminal",
          "id": "RLT-A",
          "mode": "one-plus-zero",
          "carrier-terminations": [
            "RLT-A:CT-1"
          ],
          "tdm-connections": [
            "tdm-type": "E1",
            "tdm-connections": "4"
          ]
        },

        {
          "name": "RLT-A:CT-1",
          "description": "Carrier Termination 1",
          "type": "microwaveCarrierTermination",
          "carrier-id": "A",
          "tx-enabled": true,
          "tx-frequency": 10728000,
          "duplex-distance": 644000,
          "channel-separation": 28000,
          "polarization": not-specified,
          "rtpc": {
            "maximum-nominal-power": 20
          },
          "single": {
            "selected-cm": "qam-512"
          }
        }
     ]

















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RFC 8561          Microwave Radio Link YANG Data Model         June 2019


A.2.  2+0 Instance

  Figure 2 shows a 2+0 example.

                   /--------- Radio Link ---------\
                    Near End              Far End

             +---------------+           +---------------+
             | Radio Link    |           | Radio Link    |
             | Terminal A    |           | Terminal B    |
             |               |           |               |
             |               |           |               |
             | +-----------+ |           | +-----------+ |
             | |           | | Carrier A | |           | |
             | |  Carrier  | |<--------->| |  Carrier  | |
             | |Termination| |           | |Termination| |
             | |     1     | |           | |     1     | |
             | +-----------+ |           | +-----------+ |
             |               |           |               |
             | +-----------+ |           | +-----------+ |
             | |           | | Carrier B | |           | |
             | |  Carrier  | |<--------->| |  Carrier  | |
             | |Termination| |           | |Termination| |
             | |     2     | |           | |     2     | |
             | +-----------+ |           | +-----------+ |
             |               |           |               |
             +---------------+           +---------------+

       \--- Microwave Node ---/          \--- Microwave Node ---/

                          Figure 2: 2+0 Example

  The following instance shows the 2+0 configuration of the Near End
  node.

     "interface": [
        {
          "name": "RLT-A",
          "description": "Radio Link Terminal A",
          "type": "microwaveRadioLinkTerminal",
          "id": "RLT-A",
          "mode": "two-plus-zero",
          "carrier-terminations": [
            "RLT-A:CT-1",
            "RLT-A:CT-2"
          ],





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          "tdm-connections": [
            "tdm-type": "E1",
            "tdm-connections": "4"
          ]
        },

        {
          "name": "RLT-A:CT-1",
          "description": "Carrier Termination 1",
          "type": "microwaveCarrierTermination",
          "carrier-id": "A",
          "tx-enabled": true,
          "tx-frequency": 10728000,
          "duplex-distance": 644000,
          "channel-separation": 28000,
          "polarization": not-specified,
          "rtpc": {
            "maximum-nominal-power": 20
          },
          "single": {
            "selected-cm": "qam-512"
          }
        },

        {
          "name": "RLT-A:CT-2",
          "description": "Carrier Termination 2",
          "type": "microwaveCarrierTermination",
          "carrier-id": "B",
          "tx-enabled": true,
          "tx-oper-status": on,
          "tx-frequency": 10618000,
          "duplex-distance": 644000,
          "channel-separation": 28000,
          "polarization": not-specified,
          "rtpc": {
            "maximum-nominal-power": 20
          },
          "single": {
            "selected-cm": "qam-512"
          }
        }
     ]








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A.3.  2+0 XPIC Instance

  The following instance shows the XPIC configuration of the Near End
  node.

     "interface": [
        {
          "name": "RLT-A",
          "description": "Radio Link Terminal A",
          "type": "microwaveRadioLinkTerminal",
          "id": "RLT-A",
          "mode": "two-plus-zero",
          "carrier-terminations": [
            "RLT-A:CT-1",
            "RLT-A:CT-2"
          ],
          "xpic-pairs": [
            "RLT-A:CT-1",
            "RLT-A:CT-2"
          ],
          "tdm-connections": [
            "tdm-type": "E1",
            "tdm-connections": "4"
          ]
        },

        {
          "name": "RLT-A:CT-1",
          "description": "Carrier Termination 1",
          "type": "microwaveCarrierTermination",
          "carrier-id": "A",
          "tx-enabled": true,
          "tx-frequency": 10728000,
          "duplex-distance": 644000,
          "channel-separation": 28000,
          "polarization": not-specified,
          "rtpc": {
            "maximum-nominal-power": 20
          },
          "single": {
            "selected-cm": "qam-512"
          }
        },








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        {
          "name": "RLT-A:CT-2",
          "description": "Carrier Termination 2",
          "type": "microwaveCarrierTermination",
          "carrier-id": "B",
          "tx-enabled": true,
          "tx-oper-status": on,
          "tx-frequency": 10618000,
          "duplex-distance": 644000,
          "channel-separation": 28000,
          "polarization": not-specified,
          "rtpc": {
            "maximum-nominal-power": 20
          },
          "single": {
            "selected-cm": "qam-512"
          }
        }
     ]

Contributors

  Koji Kawada
  NEC Corporation
  1753, Shimonumabe Nakahara-ku
  Kawasaki, Kanagawa 211-8666
  Japan

  Email: [email protected]


  Carlos J. Bernardos
  Universidad Carlos III de Madrid
  Av. Universidad, 30
  Leganes, Madrid  28911
  Spain

  Email: [email protected]













Ahlberg, et al.              Standards Track                   [Page 52]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019


Authors' Addresses

  Jonas Ahlberg
  Ericsson AB
  Lindholmspiren 11
  Goteborg  417 56
  Sweden

  Email: [email protected]


  Min Ye
  Huawei Technologies
  No.1899, Xiyuan Avenue
  Chengdu  611731
  China

  Email: [email protected]


  Xi Li
  NEC Laboratories Europe
  Kurfursten-Anlage 36
  Heidelberg  69115
  Germany

  Email: [email protected]


  Daniela Spreafico
  Nokia - IT
  Via Energy Park, 14
  Vimercate (MI)  20871
  Italy

  Email: [email protected]


  Marko Vaupotic
  Aviat Networks
  Motnica 9
  Trzin-Ljubljana  1236
  Slovenia

  Email: [email protected]






Ahlberg, et al.              Standards Track                   [Page 53]