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Versions: (draft-mwdt-ccamp-mw-yang) 00 01

CCAMP Working Group                                           J. Ahlberg
Internet-Draft                                               Ericsson AB
Intended status: Standards Track                                   M. Ye
Expires: January 4, 2018                             Huawei Technologies
                                                                   X. Li
                                                 NEC Laboratories Europe
                                                               K. Kawada
                                                         NEC Corporation
                                                           CJ. Bernardos
                                        Universidad Carlos III de Madrid
                                                            D. Spreafico
                                                              Nokia - IT
                                                             M. Vaupotic
                                                          Aviat Networks
                                                            July 3, 2017


               A YANG Data Model for Microwave Radio Link
                      draft-ietf-ccamp-mw-yang-01

Abstract

   This document defines a YANG data model in order to control and
   manage the radio link interfaces, and the connectivity to packet
   (typically Ethernet) interfaces in a microwave/millimeter wave node.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 4, 2018.



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Copyright Notice

   Copyright (c) 2017 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
   (http://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.  Terminology and Definitions . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  YANG Data Model (Tree Structure)  . . . . . . . . . . . . . .   4
     3.1.  the YANG Tree . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Explanation of the Microwave Data Model . . . . . . . . .   5
   4.  YANG Module . . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  33
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  34
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  34
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  34
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  34
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  35

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.

   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 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 Transmit Power Control



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   CM Coding Modulation

   CT Carrier Termination

   RLT Radio Link Terminal

   RTPC Remote Transmit Power Control

   XPIC Cross Polarization Interference Cancellation

   MIMO Multiple-Input Multiple-Output

2.  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 TDM interfaces in a microwave/millimeter wave node.
   ETSI EN 302 217 series defines the characteristics and requirements
   of microwave/millimeter wave equipment and antennas. Especially ETSI
   EN 302 217-2 [EN 302 217-2] specifies the essential parameters for
   the systems operating from 1.4GHz to 86GHz. The data model includes
   configuration and state data.

   The design of the data model follows the framework for management and
   control of microwave and millimeter wave interface parameters defined
   in [I-D.ietf-ccamp-microwave-framework].  This framework identifies
   the need and the scope of the YANG data model, the 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 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
   [I-D.ahlberg-ccamp-microwave-radio-link] and it augments RFC 7223 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 RFC 7223 as a basis.

   The designed YANG data model uses established microwave equipment
   and radio standards, such as ETSI EN 302 217-2, and the IETF: Radio
   Link Model[I-D.ahlberg-ccamp-microwave-radio-link] and the ONF:
   Microwave Modeling[ONF-model] as the basis for the definition of the
   detailed leafs/parameters, and proposes new ones to cover identified
   gaps which are analysed in[I-D.ietf-ccamp-microwave-framework].



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3.  YANG Data Model (Tree Structure)

3.1.  the YANG Tree


 module: ietf-microwave-radio-link
     +--rw radio-link-protection-groups
     |  +--rw radio-link-protection-group* [name]
     |     +--rw name                             string
     |     +--rw protection-architecture-type?    identityref
     |     +--rw protection-operation-type?       enumeration
     |     +--rw working-entity*                  if:interface-ref
     |     +--rw revertive-wait-to-restore?       uint16
     |     +--rw radio-link-protection-members*   if:interface-ref
     |     +---x protection-external-commands
     |        +---w input
     |           +---w protection-external-command?   identityref
     +--ro radio-link-protection-groups-state
     |  +--ro radio-link-protection-group* [name]
     |     +--ro name                 string
     |     +--ro protection-status?   identityref
     +--rw xpic-pairs {xpic}?
     |  +--rw xpic-pair* [name]
     |     +--rw name            string
     |     +--rw enabled?        boolean
     |     +--rw xpic-members*   if:interface-ref
     +--rw mimo-groups {mimo}?
        +--rw mimo-group* [name]
           +--rw name            string
           +--rw enabled?        boolean
           +--rw mimo-members*   if:interface-ref
   augment /if:interfaces/if:interface:
     +--rw id?                     string
     +--rw mode                    identityref
     +--rw carrier-terminations*   if:interface-ref
     +--rw rlp-groups*             leafref
     +--rw xpic-pairs*
               -> /xpic-pairs/xpic-pair/name {xpic}?
     +--rw mimo-group?
               -> /mimo-groups/mimo-group/name {mimo}?
     +--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
     +--rw tx-frequency                 uint32
     +--rw rx-frequency?                uint32
     +--rw duplex-distance?             uint32



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     +--rw channel-separation           uint32
     +--rw polarization?                enumeration
     +--rw power-mode                   enumeration
     +--rw selected-output-power        power
     +--rw atpc-lower-threshold         power
     +--rw atpc-upper-threshold         power
     +--rw coding-modulation-mode       enumeration
     +--rw selected-cm                  identityref
     +--rw selected-min-acm             identityref
     +--rw selected-max-acm             identityref
     +--rw if-loop?                     enumeration
     +--rw rf-loop?                     enumeration
     +--rw ct-performance-thresholds
        +--rw received-level-alarm-threshold?      power
        +--rw transmitted-level-alarm-threshold?   power
        +--rw ber-alarm-threshold?                 enumeration
   augment /if:interfaces-state/if:interface:
     +--ro tx-oper-status?             enumeration
     +--ro actual-transmitted-level?   power
     +--ro actual-received-level?      power
     +--ro actual-tx-cm?               identityref
     +--ro actual-snir?                decimal64
     +--ro actual-xpi?                 decimal64 {xpic}?
     +--ro capabilities
        +--ro min-tx-frequency?             uint32
        +--ro max-tx-frequency?             uint32
        +--ro min-rx-frequency?             uint32
        +--ro max-rx-frequency?             uint32
        +--ro available-min-output-power?   power
        +--ro available-max-output-power?   power
        +--ro available-min-acm?            identityref
        +--ro available-max-acm?            identityref
   augment /if:interfaces-state/if:interface/if:statistics:
     +--ro bbe?        yang:counter32
     +--ro es?         yang:counter32
     +--ro ses?        yang:counter32
     +--ro uas?        yang:counter32
     +--ro min-rltm?   power
     +--ro max-rltm?   power
     +--ro min-tltm?   power
     +--ro max-tltm?   power


3.2.  Explanation of the Microwave Data Model

   The leaves in the Interface Management Module augmented by Radio Link
   Terminal (RLT) and Carrier Termination (CT) are not always relevant.




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   "/interfaces/interface/enabled" is not relevant 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", "out-errors"
   are not within the scope of the microwave radio link domain and
   therefore not relevant for RLT and CT.

4.  YANG Module


   <CODE BEGINS> file "ietf-microwave-radio-link.yang"

   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;
     }

     import ietf-interfaces {
       prefix if;
     }

     import iana-if-type {
       prefix ianaift;
     }

    organization
     "Internet Engineering Task Force (IETF) CCAMP WG";
    contact
     "
     WG List: <mailto:ccamp@ietf.org>

     ID-draft authors:
      Jonas Ahlberg (jonas.ahlberg@ericsson.com);
      Min Ye (amy.yemin@huawei.com);
      Xi Li (Xi.Li@neclab.eu);
      Koji Kawada (k-kawada@ah.jp.nec.com)
      Carlos J. Bernardos (cjbc@it.uc3m.es)
      Daniela Spreafico (daniela.spreafico@nokia.com)
      Marko Vaupotic (Marko.Vaupotic@aviatnet.com)
     ";



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

     revision 2017-06-21 {
       description
       "Updated draft revision with updates of some descriptions to
        increase clarity and some minor adjustments of the model.";
       reference "";
     }
     revision 2016-12-22 {
       description
       "Draft revision covering a complete scope for configuration
        and state data for radio link interfaces.";
       reference "";
     }
     revision 2016-10-29 {
       description
       "Draft revision.";
       reference "";
     }

     /*
      * Features
      */

     feature xpic {
       description
         "Indicates that the device supports XPIC.";
     }

     feature mimo {
       description
         "Indicates that the device supports MIMO.";
     }

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

     /*
      * Interface identities
      */

     identity radio-link-terminal {
       base ianaift:iana-interface-type;
       description
         "Interface identity for a radio link terminal.";



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     }

     identity carrier-termination {
       base ianaift:iana-interface-type;
       description
        "Interface identity for a carrier termination.";
     }

     /*
      * 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 represent the number of bonded carrier terminations.
         Y represent 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.";
     }



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

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

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

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

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

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

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

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




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

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

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

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

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

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

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

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




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

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

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

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

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

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

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

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




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

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

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

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

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

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

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

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




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

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

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

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

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

     /*
      * Protection architecture type identities
      */
     identity protection-architecture-type {
       description
         "protection architecture type";
     }

     identity one-plus-one-type {
       base protection-architecture-type;
       description
         "One carrier termination and
         one protecting carrier termination.";
     }

     identity one-to-n-type {
       base protection-architecture-type;
       description



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         "One carrier termination protecting
         n other carrier terminations.";
     }

     /*
      * Protection states identities
      */

     identity protection-states {
       description
        "Identities describing the status of the protection,
        in a group of carrier terminations configured in
        a radio link protection mode.";
     }

     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-external-commands identities
      */

     identity protection-external-commands{
       description
         "Protection external commands for trouble shooting purpose.";
     }

     identity manual-switch{
       base protection-external-commands;
       description
         "A switch action initiated by an operator command. It switches
         normal traffic signal to the protection transport entity.";
     }

     identity forced-switch{
       base protection-external-commands;



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       description
         "A switch action initiated by an operator command. It switches
          normal traffic signal to the protection transport entity and
              forces it to remain on that entity even when criteria for
              switching back to the orignal entity are fulfilled.";
     }

     /*
      * 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.";
     }

     /*
      * Typedefs
      */

     typedef power {
       type decimal64 {
         fraction-digits 1;
       }
       description
         "Type used for power values, selected and measured.";
     }

     /*
      * Radio Link Terminal (RLT) - Configuration data nodes
      */

     augment "/if:interfaces/if:interface" {
       when "if:type = 'mrl:radio-link-terminal'";



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       description
         "Addition of data nodes for radio link terminal to
          the standard Interface data model, for interfaces of
          the type 'radio-link-terminal'.";

       leaf id {
         type string;
         default "";
         description
           "ID of the radio link terminal. Used by far-end when
            checking that it's connected to the correct RLT.";
       }

       leaf mode {
         type identityref {
           base 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 represent the number of bonded carrier terminations.
            Y represent the number of protecting carrier
            terminations.";
       }

       leaf-list carrier-terminations {
         type if:interface-ref;
         must "/if:interfaces/if:interface[if:name = current()]"
            + "/if:type = 'mrl:carrier-termination'" {
           description
             "The type of interface must be
              'carrier-termination'.";
         }
         min-elements 1;
         description
           "A list of references to carrier terminations
            included in the radio link terminal.";
       }

       leaf-list rlp-groups {
         type leafref {
           path "/mrl:radio-link-protection-groups/"
              + "mrl:radio-link-protection-group/mrl:name";
         }
         description
           "A list of references to the carrier termination
            groups configured for radio link protection in this



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            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.";
       }

       leaf mimo-group {
         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.";
       }

       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 tdm-type;
           }
           description
             "The type of TDM connection, which also indicates
             the supported capacity.";
         }
         leaf tdm-connections {
           type uint16;
           mandatory true;
           description "Number of connections of the specified type.";
         }
       }
     }




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     /*
      * Carrier Termination - Configuration data nodes
      */

     augment "/if:interfaces/if:interface" {
       when "if:type = 'mrl:carrier-termination'";
       description
         "Addition of data nodes for carrier termination to the
          standard Interface data model, for interfaces of the type
          'carrier-termination'.";

       leaf carrier-id {
         type string;
         default "A";
         description
           "ID of the carrier. (e.g. A, B, C or D)
            Used in XPIC & 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.
            Defaulted when not MIMO or XPIC.";
       }

       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-frequency {
         type uint32;
         units "kHz";
         mandatory true;
         description
           "Selected transmitter frequency.";
       }

       leaf rx-frequency {
         type uint32;
         units "kHz";
         description
           "Selected receiver frequency.
            Overrides existing value in duplex-distance.
            Calculated from tx-frequency and duplex-distance if



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            only duplex-distance is configured.
            Must match duplex-distance if both leaves are
            configured in a single operation.";
       }

       leaf duplex-distance {
         type uint32;
         units "kHz";
         description
           "Distance between Tx & Rx frequencies.
            Used to calculate rx-frequency when
            rx-frequency is not specifically configured.
            Overrides existing value in rx-frequency.
            Calculated from tx-frequency and rx-frequency if only
            rx-frequency is configured.
            Must match rx-frequency if both leaves are configured
            in a single operation.";
       }

       leaf channel-separation {
         type uint32;
         units "kHz";
         mandatory true;
         description
           "The amount of bandwidth allocated to a carrier.";
       }

       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.";
       }

       leaf power-mode {
         type enumeration {
           enum rtpc {
             description "Remote Transmit Power Control (RTPC).";



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           }
           enum atpc {
             description "Automatic Transmit Power Control (ATPC).";
           }
         }
         mandatory true;
         description
           "A choice of Remote Transmit Power Control (RTPC)
            or Automatic Transmit Power Control (ATPC).";
       }

       leaf selected-output-power {
         type power {
           range "-99..40";
         }
         units "dBm";
         mandatory true;
         description
           "Selected output power in RTPC mode and selected maximum
           output power in ATPC mode. Minimum ouput power in ATPC mode
           is the same as the system capability,
           available-min-output-power.";
       }

       leaf atpc-lower-threshold {
         when "../power-mode = 'atpc'";
         type power {
           range "-99..-30";
         }
         units "dBm";
         mandatory true;
         description
           "The lower threshold for the input power at far-end used in
           the ATPC mode.";
       }

       leaf atpc-upper-threshold {
         when "../power-mode = 'atpc'";
         type power {
           range "-99..-30";
         }
         units "dBm";
         mandatory true;
         description
           "The upper threshold for the input power at far-end used in
           the ATPC mode.";
       }




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       leaf coding-modulation-mode {
         type enumeration {
           enum fixed {
             description "Fixed coding/modulation.";
           }
           enum adaptive {
             description "Adaptive coding/modulation.";
           }
         }
         mandatory true;
         description
           "A selection of fixed or
            adaptive coding/modulation mode.";
       }

       leaf selected-cm {
         when "../coding-modulation-mode = 'fixed'";
         type identityref {
           base coding-modulation;
         }
         mandatory true;
         description
           "Selected fixed coding/modulation.";
       }

       leaf selected-min-acm {
         when "../coding-modulation-mode = 'adaptive'";
         type identityref {
           base coding-modulation;
         }
         mandatory true;
         description
           "Selected minimum coding/modulation.
            Adaptive coding/modulation shall not go
            below this value.";
       }

       leaf selected-max-acm {
         when "../coding-modulation-mode = 'adaptive'";
         type identityref {
           base coding-modulation;
         }
         mandatory true;
         description
           "Selected maximum coding/modulation.
            Adaptive coding/modulation shall not go
            above this value.";
       }



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       leaf if-loop {
         type enumeration {
           enum disabled {
             description "Disables the IF 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 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 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..-30";
           }
           units "dBm";



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           default "-99";
           description
             "An alarm is sent when the received power level is
              below the specified threshold.";
         }

         leaf transmitted-level-alarm-threshold {
           type power {
             range "-99..40";
           }
           units "dBm";
           default "-99";
           description
             "An alarm is sent when the transmitted power level is
              below the specified threshold.";
         }

         leaf ber-alarm-threshold {
           type enumeration {
             enum "10e-9" {
               description "Threshold at 10e-9.";
             }
             enum "10e-8" {
               description "Threshold at 10e-8.";
             }
             enum "10e-7" {
               description "Threshold at 10e-7.";
             }
             enum "10e-6" {
               description "Threshold at 10e-6.";
             }
             enum "10e-5" {
               description "Threshold at 10e-5.";
             }
             enum "10e-4" {
               description "Threshold at 10e-4.";
             }
             enum "10e-3" {
               description "Threshold at 10e-3.";
             }
             enum "10e-2" {
               description "Threshold at 10e-2.";
             }
             enum "10e-1" {
               description "Threshold at 10e-1.";
             }
           }
           default "10e-6";



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           description
             "Specification of at which BER an alarm should
              be raised.";
         }
       }
     }

     /*
      * Radio Link Terminal - Operational state data nodes
      * Currently nothing in addition to the general
      * interface-state model.
      */

     /*
      * Carrier Termination - Operational state data nodes
      */

     augment "/if:interfaces-state/if:interface" {
       when "if:type = 'mrl:carrier-termination'";
       description
         "Addition of state data nodes for carrier termination to
          the standard Interface state data model, for interfaces of
          the type 'carrier-termination'.";

       leaf tx-oper-status {
         type enumeration {
           enum "off" {
             description "Transmitter is off.";
           }
           enum "on" {
             description "Transmitter is on.";
           }
           enum "standby" {
             description "Transmitter is in standby.";
           }
         }
         description
           "Shows the operative status of the transmitter.";
       }

       leaf actual-transmitted-level {
         type power {
           range "-99..40";
         }
         units "dBm";
         description
           "Actual transmitted power level (0.1 dBm resolution).";
       }



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       leaf actual-received-level {
         type power {
           range "-99..-20";
         }
         units "dBm";
         description
           "Actual received power level (0.1 dBm resolution).";
       }

       leaf actual-tx-cm {
         type identityref {
            base coding-modulation;
         }
         description
           "Actual coding/modulation in transmitting direction.";
       }

       leaf actual-snir {
         type decimal64 {
           fraction-digits 1;
           range "0..99";
         }
         units "dB";
         description
           "Actual signal to noise plus interference ratio.
            (0.1 dB resolution).";
       }

       leaf actual-xpi {
         if-feature xpic;
         type decimal64 {
           fraction-digits 1;
           range "0..99";
         }
         units "dB";
         description
           "The actual carrier to cross-polar interference.
            Only valid if XPIC is enabled. (0.1 dB resolution).";
       }

       container capabilities {
         description
           "Capabilities of the the installed equipment and
            some selected configurations.";

         leaf min-tx-frequency {
           type uint32;
           units "kHz";



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           description
             "Minimum Tx frequency possible to use.";
         }

         leaf max-tx-frequency {
           type uint32;
           units "kHz";
           description
             "Maximum Tx frequency possible to use.";
         }

         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 available-min-output-power {
           type power;
           units "dBm";
           description
             "The minimum output power supported.";
         }

         leaf available-max-output-power {
           type power;
           units "dBm";
           description
             "The maximum output power supported.";
         }

         leaf available-min-acm {
           type identityref {
             base coding-modulation;
           }
           description
             "Minimum coding-modulation possible to use.";
         }

         leaf available-max-acm {



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           type identityref {
             base coding-modulation;
           }
           description
             "Maximum coding-modulation possible to use.";
         }
       }
     }

     augment "/if:interfaces-state/if:interface/if:statistics" {
       when "../if:type = 'mrl:carrier-termination'";
       description
         "Addition of state data nodes in the container statistics
          for carrier terminations to the standard Interface data
          model, for interfaces of the type 'carrier-termination'.";

       leaf bbe {
         type yang:counter32;
         units "number of block errors";
         description
           "Number of Background Block Errors (BBE) during the
           interval. A BBE is an errored block not occurring as
           part of an SES.";
       }

       leaf es {
         type yang:counter32;
         units "seconds";
         description
           "Number of Errored Seconds (ES) since last reset.
            An ES is a one-second period with one or more errored
            blocks or at least one defect.";
       }

       leaf ses {
         type yang:counter32;
         units "seconds";
         description
           "Number of Severely Errored Seconds (SES) during the
            interval. SES is a one-second period which contains
            equal or more than 30% errored blocks or at least
            one defect. SES is a subset of ES.";
       }

       leaf uas {
         type yang:counter32;
         units "seconds";
         description



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           "Number of Unavailable Seconds (UAS), that is, the
            total time that the node has been unavailable during
            a fixed measurement interval.";
       }

       leaf min-rltm {
         type power {
           range "-99..-20";
         }
         units "dBm";
         description
           "Minimum received power level since last reset.";
       }

       leaf max-rltm {
         type power {
           range "-99..-20";
         }
         units "dBm";
         description
           "Maximum received power level since last reset.";
       }

       leaf min-tltm {
         type power {
           range "-99..40";
         }
         units "dBm";
         description
           "Minimum transmitted power level since last reset.";
       }

       leaf max-tltm {
         type power {
           range "-99..40";
         }
         units "dBm";
         description
           "Maximum transmitted power level since last reset.";
       }
     }

     /*
      * Radio Link Protection Groups - Configuration data nodes
      */

     container radio-link-protection-groups {
       description



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         "Configuration of radio link protected groups (1+1) of
         carrier terminations in a radio link. More than one
         protected group per radio-link-terminal is allowed.";

       list radio-link-protection-group {
         key "name";
         description
         "List of protected groups of carrier terminations
         in a radio link.";

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

         leaf protection-architecture-type {
           type identityref{
             base protection-architecture-type;
           }
           default "one-plus-one-type";
           description
             "The type of protection architecture used,
             e.g. one carrier termination protecting one or
             several other carrier terminations.";
         }

         leaf protection-operation-type {
           type enumeration {
             enum "non-revertive" {
               description
                 "In non revertive operation, the traffic
                 does not return to the working carrier termination
                 if the switch requests are terminated. ";
             }
             enum "revertive" {
               description
                 "In revertive operation, the traffic always
                 returns to (or remains on) the working
                 carrier termination if the switch requests are
                 terminated. ";
             }
           }
           default "non-revertive";
           description
             "The type of protection operation, i.e. revertive
             or non-revertive operation.";



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         }

         leaf-list working-entity  {
           when "../protection-operation-type = 'revertive'";
           type if:interface-ref;
           must "/if:interfaces/if:interface[if:name =  current()]"
              + "/if:type = 'mrl:carrier-termination'" {
             description
               "The type of a working-entity must be
                'carrier-termination'.";
           }
           min-elements 1;
           description
             "The carrier terminations over which the traffic
             normally should be transported over when there
             is no need to use the protecting carrier termination.";
         }

         leaf revertive-wait-to-restore {
           when "../protection-operation-type = 'revertive'";
           type uint16;
           units "seconds";
           default "0";
           description
             "The time to wait before switching back to the
              working carrier termination if protection-operation-type
              is revertive.";
         }

         leaf-list radio-link-protection-members {
           type if:interface-ref;
           must "/if:interfaces/if:interface[if:name = current()]"
              + "/if:type = 'mrl:carrier-termination'" {
             description
               "The type of a protection member must be
                'carrier-termination'.";
           }
           min-elements 2;
           description
             "Association to a group of carrier terminations
              configured for radio link protection and used in
              the radio link terminal.";
         }

         action protection-external-commands {
           input {
             leaf protection-external-command {
               type identityref {



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                 base protection-external-commands;
               }
               description
                 "Execution of protection external commands for
                 trouble shooting purpose.";
             }
           }
         }
       }
     }

     /*
      * Radio Link Protection Groups - Operational state data nodes
      */

     container radio-link-protection-groups-state {
       config false;
       description
         "State data for radio link protected groups of
         carrier terminations in a radio link.";

       list radio-link-protection-group {
         key "name";
         description
           "List of protected groups of carrier terminations
           in a radio link.";

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

         leaf protection-status {
           type identityref {
             base protection-states;
           }
           description
             "Status of the protection, in a group of carrier
              terminations configured in a radio link protection
              mode.";
         }
       }
     }

     /*
      * XPIC & MIMO groups - Configuration data nodes



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      */

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

       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 xpic-members {
           type if:interface-ref;
           must "/if:interfaces/if:interface[if:name = current()]"
             + "/if:type = 'mrl:carrier-termination'" {
             description
               "The type of a xpic-member must be
               'carrier-termination'.";
           }
           min-elements 2;
           max-elements 2;
           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.";



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       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 mimo-members {
           type if:interface-ref;
           must "/if:interfaces/if:interface[if:name = current()]"
              + "/if:type = 'mrl:carrier-termination'" {
             description
               "The type of a mimo-member must be
                'carrier-termination'.";
           }
           min-elements 2;
           description
             "Association to a MIMO group if used in the radio
              link terminal.";
         }
       }
    }

   }

   <CODE ENDS>


5.  Security Considerations

   The YANG module defined in this memo is designed to be accessed via
   the NETCONF protocol [RFC6241].  The lowest NETCONF layer is the
   secure transport layer and the mandatory-to-implement secure
   transport is SSH [RFC6242].  The NETCONF access control model
   [RFC6536] provides the means to restrict access for particular
   NETCONF users to a pre-configured subset of all available NETCONF
   protocol operations and content.



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   There are a number of data nodes defined in the YANG module which 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., <editconfig>)
   to these data nodes without proper protection can have a negative
   effect on network operations.

   The security considerations of [RFC7223] also apply to this document.

6.  IANA Considerations

   TBD.

7.  References

7.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <http://www.rfc-editor.org/info/rfc2119>.

   [RFC7223]  Bjorklund, M., "A YANG Data Model for Interface
              Management", RFC 7223, DOI 10.17487/RFC7223, May 2014,
              <http://www.rfc-editor.org/info/rfc7223>.

   [EN 302 217-2]
              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.

7.2.  Informative References

   [I-D.ahlberg-ccamp-microwave-radio-link]
              Ahlberg, J., Carlson, J., Lund, H., Olausson, T., Ye, M.,
              and M. Vaupotic, "Microwave Radio Link YANG Data Models",
              draft-ahlberg-ccamp-microwave-radio-link-01 (work in
              progress), May 2016.

   [I-D.ietf-ccamp-microwave-framework]
              Ahlberg, J., Contreras, L., Ye, M., Vaupotic, M.,
              Tantsura, J., Kawada, K., Li, X., Akiyoshi, I., and C.
              Bernardos, "A framework for Management and Control of
              microwave and millimeter wave interface parameters",
              draft-ietf-ccamp-microwave-framework-01 (work in
              progress), June 2017.

   [ONF-model] "Microwave Modeling - ONF Wireless Transport Group",
               May 2016.


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   [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,
              <http://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,
              <http://www.rfc-editor.org/info/rfc6242>.

   [RFC6536]  Bierman, A. and M. Bjorklund, "Network Configuration
              Protocol (NETCONF) Access Control Model", RFC 6536,
              DOI 10.17487/RFC6536, March 2012,
              <http://www.rfc-editor.org/info/rfc6536>.

Authors' Addresses

   Jonas Ahlberg
   Ericsson AB
   Lindholmspiren 11
   Goeteborg  417 56
   Sweden

   Email: jonas.ahlberg@ericsson.com


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

   Email: amy.yemin@huawei.com


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

   Email: Xi.Li@neclab.eu


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

   Email: k-kawada@ah.jp.nec.com

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

   Email: cjbc@it.uc3m.es


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

   Email: daniela.spreafico@nokia.com


   Marko Vaupotic
   Aviat Networks
   Motnica 9
   Trzin-Ljubljana  1236
   Slovenia

   Email: Marko.Vaupotic@Aviatnet.com


























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