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Internet Engineering Task Force (IETF)                        J. AhlbergRequest for Comments: 8561                                   Ericsson ABCategory: Standards Track                                          M. YeISSN: 2070-1721                                      Huawei Technologies                                                                   X. Li                                                 NEC Laboratories Europe                                                            D. Spreafico                                                              Nokia - IT                                                             M. Vaupotic                                                          Aviat Networks                                                               June 2019A YANG Data Model for Microwave Radio LinkAbstract   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 inSection 2 of RFC 7841.   Information about the current status of this document, any errata,   and how to provide feedback on it may be obtained athttps://www.rfc-editor.org/info/rfc8561.Ahlberg, et al.              Standards Track                    [Page 1]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019Copyright Notice   Copyright (c) 2019 IETF Trust and the persons identified as the   document authors.  All rights reserved.   This document is subject toBCP 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 Contents1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .31.1.  Terminology and Definitions . . . . . . . . . . . . . . .31.2.  Tree Structure  . . . . . . . . . . . . . . . . . . . . .52.  Microwave Radio Link YANG Data Model  . . . . . . . . . . . .52.1.  YANG Tree . . . . . . . . . . . . . . . . . . . . . . . .52.2.  Explanation of the Microwave Data Model . . . . . . . . .73.  Microwave Radio Link YANG Data Model  . . . . . . . . . . . .74.  Interface Protection YANG Data Model  . . . . . . . . . . . .275.  Microwave Types YANG Data Model . . . . . . . . . . . . . . .336.  Security Considerations . . . . . . . . . . . . . . . . . . .407.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .428.  References  . . . . . . . . . . . . . . . . . . . . . . . . .438.1.  Normative References  . . . . . . . . . . . . . . . . . .438.2.  Informative References  . . . . . . . . . . . . . . . . .44Appendix A.  Example: 1+0 and 2+0 Configuration Instances . . . .47A.1.  1+0 Instance  . . . . . . . . . . . . . . . . . . . . . .47A.2.  2+0 Instance  . . . . . . . . . . . . . . . . . . . . . .49A.3.  2+0 XPIC Instance . . . . . . . . . . . . . . . . . . . .50   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .52   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .53Ahlberg, et al.              Standards Track                    [Page 2]

RFC 8561          Microwave Radio Link YANG Data Model         June 20191.  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.Ahlberg, et al.              Standards Track                    [Page 3]

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 CancellationAhlberg, et al.              Standards Track                    [Page 4]

RFC 8561          Microwave Radio Link YANG Data Model         June 20191.2.  Tree Structure   A simplified graphical representation of the data model is used inSection 2.1 of this document.  The meaning of the symbols in these   diagrams is defined in [RFC8340].2.  Microwave Radio Link YANG Data Model2.1.  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}?Ahlberg, et al.              Standards Track                    [Page 5]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019       +--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?                        enumerationAhlberg, et al.              Standards Track                    [Page 6]

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?   power2.2.  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 "ietf-microwave-radio-link@2019-06-19.yang"   module ietf-microwave-radio-link {     yang-version 1.1;     namespace "urn:ietf:params:xml:ns:yang:ietf-microwave-radio-link";     prefix mrl;Ahlberg, et al.              Standards Track                    [Page 7]

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:ccamp@ietf.org>        Editors:         Jonas Ahlberg (jonas.ahlberg@ericsson.com)         Min Ye (amy.yemin@huawei.com)         Xi Li (Xi.Li@neclab.eu)         Daniela Spreafico (daniela.spreafico@nokia.com)         Marko Vaupotic (Marko.Vaupotic@aviatnet.com)";     description       "This is a module for the entities in        a generic microwave system.        Copyright (c) 2019 IETF Trust and the persons identified as        authors of the code.  All rights reserved.        Redistribution and use in source and binary forms, with or        without modification, is permitted pursuant to, and subject        to the license terms contained in, the Simplified BSD License        set forth inSection 4.c of the IETF Trust's Legal Provisions        Relating to IETF Documents        (http://trustee.ietf.org/license-info).Ahlberg, et al.              Standards Track                    [Page 8]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019        This version of this YANG module is part ofRFC 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.";     }Ahlberg, et al.              Standards Track                    [Page 9]

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.";       }Ahlberg, et al.              Standards Track                   [Page 10]

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.";Ahlberg, et al.              Standards Track                   [Page 11]

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 {Ahlberg, et al.              Standards Track                   [Page 12]

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;Ahlberg, et al.              Standards Track                   [Page 13]

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.";Ahlberg, et al.              Standards Track                   [Page 14]

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";           }         }Ahlberg, et al.              Standards Track                   [Page 15]

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";Ahlberg, et al.              Standards Track                   [Page 16]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019           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 {Ahlberg, et al.              Standards Track                   [Page 17]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019           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).";Ahlberg, et al.              Standards Track                   [Page 18]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019             }             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.";           }Ahlberg, et al.              Standards Track                   [Page 19]

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.";Ahlberg, et al.              Standards Track                   [Page 20]

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;Ahlberg, et al.              Standards Track                   [Page 21]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019         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.Ahlberg, et al.              Standards Track                   [Page 22]

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";Ahlberg, et al.              Standards Track                   [Page 23]

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()]"Ahlberg, et al.              Standards Track                   [Page 24]

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;Ahlberg, et al.              Standards Track                   [Page 25]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019           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>Ahlberg, et al.              Standards Track                   [Page 26]

RFC 8561          Microwave Radio Link YANG Data Model         June 20194.  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 "ietf-interface-protection@2019-06-19.yang"   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:ccamp@ietf.org>        Editors:         Jonas Ahlberg (jonas.ahlberg@ericsson.com)         Min Ye (amy.yemin@huawei.com)         Xi Li (Xi.Li@neclab.eu)         Daniela Spreafico (daniela.spreafico@nokia.com)         Marko Vaupotic (Marko.Vaupotic@aviatnet.com)";     description       "This is a module for the entities in        a generic 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 inSection 4.c of the IETF Trust's Legal Provisions        Relating to IETF Documents        (http://trustee.ietf.org/license-info).Ahlberg, et al.              Standards Track                   [Page 27]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019        This version of this YANG module is part ofRFC 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.";Ahlberg, et al.              Standards Track                   [Page 28]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019     }     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.";Ahlberg, et al.              Standards Track                   [Page 29]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019           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";Ahlberg, et al.              Standards Track                   [Page 30]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019           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 protectionAhlberg, et al.              Standards Track                   [Page 31]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019              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>Ahlberg, et al.              Standards Track                   [Page 32]

RFC 8561          Microwave Radio Link YANG Data Model         June 20195.  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 "ietf-microwave-types@2019-06-19.yang"   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:ccamp@ietf.org>        Editors:         Jonas Ahlberg (jonas.ahlberg@ericsson.com)         Min Ye (amy.yemin@huawei.com)         Xi Li (Xi.Li@neclab.eu)         Daniela Spreafico (daniela.spreafico@nokia.com)         Marko Vaupotic (Marko.Vaupotic@aviatnet.com)";     description       "This 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 inSection 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 ofRFC 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";     }Ahlberg, et al.              Standards Track                   [Page 33]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019     /*      * 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.";     }Ahlberg, et al.              Standards Track                   [Page 34]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019     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.";     }Ahlberg, et al.              Standards Track                   [Page 35]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019     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.";     }Ahlberg, et al.              Standards Track                   [Page 36]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019     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.";     }Ahlberg, et al.              Standards Track                   [Page 37]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019     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.";     }Ahlberg, et al.              Standards Track                   [Page 38]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019     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.";     }   }Ahlberg, et al.              Standards Track                   [Page 39]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019   <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,Ahlberg, et al.              Standards Track                   [Page 40]

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:Ahlberg, et al.              Standards Track                   [Page 41]

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.Ahlberg, et al.              Standards Track                   [Page 42]

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                                         carriers8.  References8.1.  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>.Ahlberg, et al.              Standards Track                   [Page 43]

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.Ahlberg, et al.              Standards Track                   [Page 44]

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>.Ahlberg, et al.              Standards Track                   [Page 45]

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.Ahlberg, et al.              Standards Track                   [Page 46]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019Appendix 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.Ahlberg, et al.              Standards Track                   [Page 47]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019      "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"           }         }      ]Ahlberg, et al.              Standards Track                   [Page 48]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019A.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"           ],Ahlberg, et al.              Standards Track                   [Page 49]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019           "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"           }         }      ]Ahlberg, et al.              Standards Track                   [Page 50]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019A.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"           }         },Ahlberg, et al.              Standards Track                   [Page 51]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019         {           "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: k-kawada@ah.jp.nec.com   Carlos J. Bernardos   Universidad Carlos III de Madrid   Av. Universidad, 30   Leganes, Madrid  28911   Spain   Email: cjbc@it.uc3m.esAhlberg, et al.              Standards Track                   [Page 52]

RFC 8561          Microwave Radio Link YANG Data Model         June 2019Authors' Addresses   Jonas Ahlberg   Ericsson AB   Lindholmspiren 11   Goteborg  417 56   Sweden   Email: jonas.ahlberg@ericsson.com   Min Ye   Huawei Technologies   No.1899, Xiyuan Avenue   Chengdu  611731   China   Email: amy.yemin@huawei.com   Xi Li   NEC Laboratories Europe   Kurfursten-Anlage 36   Heidelberg  69115   Germany   Email: Xi.Li@neclab.eu   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.comAhlberg, et al.              Standards Track                   [Page 53]

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