Internet DRAFT - draft-esdih-ccamp-layer0-types-ext
draft-esdih-ccamp-layer0-types-ext
CCAMP D. Beller, Ed.
Internet-Draft S. Belotti, Ed.
Updates: draft-ietf-ccamp-layer0-types (if Nokia
approved) H. Zheng
Intended status: Standards Track I. Busi
Expires: 8 January 2022 Huawei
E. Le Rouzic
Orange
7 July 2021
A YANG Data Model for Layer 0 Types - Revision 2
draft-esdih-ccamp-layer0-types-ext-01
Abstract
This document defines a collection of common data types and groupings
in the YANG data modeling language, which are used in several YANG
modules for wavelength Division multiplexing (WDM) transport
networks. The YANG module ietf-layer0-types-ext updates ietf-
layer0-types defined in draft-ietf-ccamp-layer0-types, which has been
reduced in scope prior to publication to only cover spectrum
management related aspects required for the YANG module ietf-wson-
topology defined in draft-ietf-ccamp-wson-yang.
To be completed
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 https://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 8 January 2022.
Copyright Notice
Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved.
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This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document.
Please review these documents carefully, as they describe your rights
and restrictions with respect to this document. Code Components
extracted from this document must include Simplified BSD License text
as described in Section 4.e of the Trust Legal Provisions and are
provided without warranty as described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Requirements Language . . . . . . . . . . . . . . . . . . 2
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. Extensions for the Layer 0 Types Module . . . . . . . . . . . 3
3. Layer0 Types Revision 2 YANG CODE . . . . . . . . . . . . . . 4
4. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 25
5. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 25
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 25
7. Security Considerations . . . . . . . . . . . . . . . . . . . 25
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.1. Normative References . . . . . . . . . . . . . . . . . . 25
8.2. Informative References . . . . . . . . . . . . . . . . . 26
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 27
1. Introduction
YANG [RFC7950] is a data modeling language used to model
configuration data, state data, Remote Procedure Calls, and
notifications for network management protocols such as NETCONF
[RFC6241]. The YANG language supports a small set of built-in data
types and provides mechanisms to derive other types from the built-in
types.
This document introduces a collection of common data types derived
from the built-in YANG data types. The derived types and groupings
are designed to be the common types applicable for modeling Traffic
Engineering (TE) features as well as non-TE features (e.g., physical
network configuration aspect) for Layer 0 optical networks in
model(s) defined outside of this document.
1.1. 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 RFC 2119 [RFC2119].
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1.2. Terminology
2. Extensions for the Layer 0 Types Module
This document defines YANG module extensions for common Layer 0
types. named ietf-layer0-types-ext. This module can be used for
both WSON and Flexi-grid DWDM networks but in particular is adding
common types used in the context of optical impairment aware topology
model in WSON and SSONs. The ietf-layer0-types-ext module contains
the following YANG identities, types and groupings that can be reused
in other YANG modules:
transceiver-capabilities:
a YANG grouping to define the transceiver capabilities (also called
"modes") needed to determine optical signal compatibility.
standard-mode:
a YANG grouping for ITU-T G.698.2 standard mode that guarantees
interoperability.
organizational-mode:
a YANG grouping to define transponder operational mode supported by
organizations or vendors.
common-explicit-mode:
a YANG grouping to define the list of attributes related to optical
impairments limits in case of transceiver explicit mode. This
grouping should be the same used in
[I-D.ietf-ccamp-dwdm-if-param-yang].
common-organizational-explicit-mode:
a YANG grouping to define the common capabilities attributes limit
range in case of operational mode and explicit mode. Also this
grouping should be used in [I-D.ietf-ccamp-dwdm-if-param-yang].
cd-pmd-penalty:
a YANG grouping to define the triplet used as entries in the list
optional penalty associated with a given accumulated CD and PMD.
This list of triplet cd, pmd, penalty can be used to sample the
function penalty = f(CD, PMD).
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[Editor's note: There is still stuff from the xml template that needs
to be removed]
3. Layer0 Types Revision 2 YANG CODE
The YANG code is developed on GitHub and can also be found in the
following CCAMP repository:
https://github.com/ietf-ccamp-wg/ietf-ccamp-layer0-types-ext
[Editor's note: YANG code below always has to be updated before
submitting a new revision!]
<CODE BEGINS>
module ietf-layer0-types-ext {
namespace "urn:ietf:params:xml:ns:yang:ietf-layer0-types-ext";
prefix "l0-types-ext";
organization
"IETF CCAMP Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/ccamp/>
WG List: <mailto:ccamp@ietf.org>
Editor: Dieter Beller
<mailto:Dieter.Beller@nokia.com>
Editor: Sergio Belotti
<mailto:Sergio.Belotti@nokia.com>
Editor: Italo Busi
<mailto:Italo.Busi@huawei.com>
Editor: Haomian Zheng
<mailto:zhenghaomian@huawei.com>";
// Additional contacts TBA (contributors)
description
"Description to be added!!!
Copyright (c) 2021 IETF Trust and the persons identified
as authors of the code. All rights reserved.
Redistribution and use in source and binary forms, with
or without modification, is permitted pursuant to, and
subject to the license terms contained in, the Simplified
BSD License set forth in Section 4.c of the IETF Trust's
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Legal Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; see
the RFC itself for full legal notices.";
revision "2021-07-05" {
description
"Initial Version";
reference
"RFC XXXX: A YANG Data Model for Layer 0 Types - Revision 2";
}
/*
* Identities
*/
identity modulation {
description "base identity for modulation type";
}
identity QPSK {
base modulation;
description
"QPSK (Quadrature Phase Shift Keying) modulation";
}
identity DP-QPSK {
base modulation;
description
"DP-QPSK (Dual Polarization Quadrature
Phase Shift Keying) modulation";
}
identity QAM8 {
base modulation;
description
"8QAM (8-State Quadrature Amplitude Modulation) modulation";
}
identity QAM16 {
base modulation;
description
"QAM16 (Quadrature Amplitude Modulation)";
}
identity DP-QAM8 {
base modulation;
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description
"DP-QAM8 (Dual Polarization Quadrature Amplitude Modulation)";
}
identity DC-DP-QAM8 {
base modulation;
description
"DC DP-QAM8 (Dual Carrier Dual Polarization Quadrature
Amplitude Modulation)";
}
identity DP-QAM16 {
base modulation;
description
"DP-QAM16 (Dual Polarization Quadrature Amplitude
Modulation)";
}
identity DC-DP-QAM16 {
base modulation;
description
"DC DP-QAM16 (Dual Carrier Dual Polarization Quadrature
Amplitude Modulation)";
}
identity fec-type {
description
"Base identity from which specific FEC
(Forward Error Correction) type identities are derived.";
}
identity g-fec {
base fec-type;
description
"G-FEC (Generic-FEC)";
}
identity e-fec {
base fec-type;
description
"E-FEC (Enhanced-FEC)";
}
identity no-fec {
base fec-type;
description
"No FEC";
}
identity reed-solomon {
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base fec-type;
description
"Reed-Solomon error correction";
}
identity hamming-code {
base fec-type;
description
"Hamming Code error correction";
}
identity golay {
base fec-type;
description "Golay error correction";
}
identity line-coding {
description
"base line-coding class";
reference
"ITU-T G.698.2-201811 section 7";
}
identity line-coding-NRZ-2p5G {
base line-coding;
description
"ITU-T G.698.2-201811 section 7 table 8-1";
}
identity line-coding-NRZ-OTU1 {
base line-coding;
description
"ITU-T G.698.2-201811 section 7 table 8-2";
}
identity line-coding-NRZ-10G {
base line-coding;
description
"ITU-T G.698.2-201811 section 7 table 8-3/8-5";
}
identity line-coding-NRZ-OTU2 {
base line-coding;
description
"ITU-T G.698.2-201811 section 7 table 8-4/8-6";
}
identity wavelength-assignment {
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description
"Wavelength selection base";
reference
"RFC6163:Framework for GMPLS and Path Computation Element
(PCE) Control of Wavelength Switched Optical Networks (WSONs)";
}
identity unspecified-wavelength-assignment {
base wavelength-assignment;
description
"No method specified";
}
identity first-fit-wavelength-assignment {
base wavelength-assignment;
description
"All the available wavelengths are numbered,
and this WA (Wavelength Assignment) method chooses
the available wavelength with the lowest index";
}
identity random-wavelength-assignment {
base wavelength-assignment;
description
"This WA method chooses an available
wavelength randomly";
}
identity least-loaded-wavelength-assignment {
base wavelength-assignment;
description
"This WA method selects the wavelength that
has the largest residual capacity on the most loaded
link along the route (in multi-fiber networks)";
}
identity term-type {
description
"Termination type";
reference
"ITU-T G.709: Interfaces for the Optical Transport Network";
}
identity term-phys {
base term-type;
description
"Physical layer termination";
}
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identity term-otu {
base term-type;
description
"OTU (Optical Transport Unit) termination";
}
identity term-odu {
base term-type;
description
"ODU (Optical Data Unit) termination";
}
identity term-opu {
base term-type;
description
"OPU (Optical Payload Unit) termination";
}
identity otu-type {
description
"Base identity from which specific OTU identities are derived";
reference
"ITU-T G.709: Interfaces for the Optical Transport Network";
}
identity OTU1 {
base otu-type;
description
"OTU1 (2.66 Gb/s)";
}
identity OTU1e {
base otu-type;
description
"OTU1e (11.04 Gb/s)";
}
identity OTU1f {
base otu-type;
description
"OTU1f (11.27 Gb/s)";
}
identity OTU2 {
base otu-type;
description
"OTU2 (10.70 Gb/s)";
}
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identity OTU2e {
base otu-type;
description
"OTU2e (11.09 Gb/s)";
}
identity OTU2f {
base otu-type;
description
"OTU2f (11.31G)";
}
identity OTU3 {
base otu-type;
description
"OTU3 (43.01 Gb/s)";
}
identity OTU3e1 {
base otu-type;
description
"OTU3e1 (44.57 Gb/s)";
}
identity OTU3e2 {
base otu-type;
description
"OTU3e2 (44.58 Gb/s)";
}
identity OTU4 {
base otu-type;
description
"OTU4 (111.80 Gb/s)";
}
identity OTUCn {
base otu-type;
description
"OTUCn (n x 105.25 Gb/s)";
}
identity type-power-mode {
description
"power equalization mode used within the
OMS and its elements";
}
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identity power-spectral-density {
base type-power-mode;
description
"all elements must use power spectral density (W/Hz)";
}
identity carrier-power {
base type-power-mode;
description
"all elements must use power (dBm)";
}
/*
* Typedefs
*/
typedef operational-mode {
type string;
description
"Organization/vendor specific mode that guarantees
interoperability.";
reference "ITU-T G.698.2 (11/2018)";
}
typedef standard-mode {
type string;
description
"ITU-T G.698.2 standard mode that guarantees
interoperability.
It must be an string with the following format:
B-DScW-ytz(v) where all these attributes
are conformant
to the ITU-T recomendation";
reference "ITU-T G.698.2 (11/2018)";
}
typedef organization-identifier {
type string;
description
"vendor/organization identifier that uses a private mode
out of already defined in G.698.2 ITU-T application-code";
reference
"RFC7581: Routing and Wavelength Assignment Information
Encoding for Wavelength Switched Optical Networks";
}
typedef frequency-thz {
type decimal64 {
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fraction-digits 6;
}
units THz;
description
"The DWDM frequency in THz, e.g., 193.112500";
reference
"RFC6205: Generalized Labels for
Lambda-Switch-Capable (LSC) Label Switching Routers";
}
typedef frequency-ghz {
type decimal64 {
fraction-digits 3;
}
units GHz;
description
"The DWDM frequency in GHz, e.g., 193112.500";
reference
"RFC6205: Generalized Labels for
Lambda-Switch-Capable (LSC) Label Switching Routers";
}
typedef dbm-t {
type int32;
units ".01dbm";
description
"Amplifiers and Transceivers Power in dBm.";
}
typedef snr {
type decimal64 {
fraction-digits 2;
}
units "dB@0.1nm";
description
"(Optical) Signal to Noise Ratio measured over 0.1 nm
resolution bandwidth";
}
typedef fiber-type {
type enumeration {
enum G.652 {
description "G.652 Standard Singlemode Fiber";
}
enum G.654 {
description "G.654 Cutoff Shifted Fiber";
}
enum G.653 {
description "G.653 Dispersion Shifted Fiber";
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}
enum G.655 {
description "G.655 Non-Zero Dispersion Shifted Fiber";
}
enum G.656 {
description "G.656 Non-Zero Dispersion for Wideband
Optical Transport";
}
enum G.657 {
description "G.657 Bend-Insensitive Fiber";
}
}
description
"ITU-T based fiber-types";
}
/*
* Groupings
*/
/* supported inverse multiplexing capabilities such as
max. OTSiG:OTSi cardinality
It is a transponder attribute not transceiver
*/
/* leaf multiplexing-cap {
type uint32;
config false;
description "supported inverse multiplexing capabilities
such as max. OTSiG:OTSi cardinality";
}
*/
grouping transceiver-capabilities {
description
"This grouping is intended to be use for reporting the
capabilities of a transceiver.";
container supported-modes {
description
"Transceiver's supported modes.";
list supported-mode {
key "mode-id";
config false;
description "list of supported transceiver's modes.";
leaf mode-id {
type string {
length "1..255";
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}
description "ID for the supported transceiver's mode.";
}
choice mode {
mandatory true;
description
"Indicates whether the transceiver's mode is a standard
mode, an organizational mode or an explicit mode.";
case G.698.2 {
uses standard-mode;
}
case organizational-mode {
container organizational-mode {
description
"The set of attributes for an organizational mode";
uses organizational-mode;
uses common-organizational-explicit-mode;
} // container organizational-mode
}
case explicit-mode {
container explicit-mode {
description
"The set of attributes for an explicit mode";
container supported-modes {
description
"Container for all the standard and organizational
modes supported by the transceiver's explicit
mode.";
leaf-list supported-application-codes {
type leafref {
path "../../../mode-id";
}
must "../../../../"
+ "supported-mode[mode-id=current()]/"
+ "standard-mode" {
description
"The pointer is only for application codes
supported by transceiver.";
}
description
"List of pointers to the application codes
supported by the transceiver's explicit mode.";
}
leaf-list supported-organizational-modes {
type leafref {
path "../../../mode-id";
}
must "../../../../"
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+ "supported-mode[mode-id=current()]/"
+ "organizational-mode" {
description
"The pointer is only for organizational modes
supported by transceiver.";
}
description
"List of pointers to the organizational modes
supported by the transceiver's explicit mode.";
}
} // container supported-modes
uses common-explicit-mode;
uses common-organizational-explicit-mode;
} // container explicit-mode
} // end of case explicit-mode
} // end of choice
} // list supported-modes
} // container supported-modes
} // grouping transceiver-capabilities
grouping standard-mode {
description
"ITU-T G.698.2 standard mode that guarantees interoperability.
It must be an string with the following format:
B-DScW-ytz(v) where all these attributes are conformant
to the ITU-T recomendation";
leaf standard-mode {
type standard-mode;
config false;
description
"G.698.2 standard mode";
}
}
grouping organizational-mode {
description
"Transponder operational mode supported by organizations or
vendor";
leaf operational-mode {
type operational-mode;
config false;
description
"configured organization- or vendor-specific
application identifiers (AI) supported by the transponder";
}
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leaf organization-identifier {
type organization-identifier;
config false;
description
"organization identifier that uses organizational
mode";
}
}
grouping cd-pmd-penalty {
description "entries of table; triplet chromatic
dispersion, polarization mode dispersion and
associated penalty";
leaf chromatic-dispersion {
type decimal64 {
fraction-digits 2;
range "0..max";
}
units "ps/nm";
config false;
mandatory true;
description "chromatic dispersion";
}
leaf polarization-mode-dispersion {
type decimal64 {
fraction-digits 2;
range "0..max";
}
units "ps";
config false;
mandatory true;
description "Polarization mode dispersion";
}
leaf penalty {
type decimal64 {
fraction-digits 2;
range "0..max";
}
units "dB";
config false;
mandatory true;
description "Associated penalty on the receiver";
}
}
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grouping pdl-penalty {
description
"entries of table; pair of values polarization dependent loss
and associated penalty";
leaf max-polarization-dependent-loss {
type decimal64 {
fraction-digits 2;
}
units "dB";
config false;
mandatory true;
description
"Maximum acceptable accumulate polarization dependent loss";
}
leaf penalty {
type uint8;
units "dB";
config false;
mandatory true;
description "Associated penalty on the receiver";
}
}
/*
* This grouping represent the list of attributes related to
* optical impairment limits for explicit mode
* (min OSNR, max PMD, max CD, max PDL, Q-factor limit, etc.)
* In case of standard and operational mode the attributes are
* implicit
*/
grouping common-explicit-mode {
description "Attributes capabilities related to
explicit mode of an optical transceiver";
leaf line-coding-bitrate {
type identityref {
base line-coding;
}
config false;
description "Bit rate/line coding of optical tributary signal";
reference
"ITU-T G.698.2 section 7.1.2";
}
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leaf max-polarization-mode-dispersion {
type decimal64 {
fraction-digits 2;
range "0..max";
}
units "ps";
config false;
description
"Maximum acceptable accumulated polarization mode
dispersion on the receiver";
}
leaf max-chromatic-dispersion {
type decimal64 {
fraction-digits 2;
range "0..max";
}
units "ps/nm";
config false;
description
"Maximum acceptable accumulated chromatic dispersion
on the receiver";
}
list chromatic-and-polarization-dispersion-penalty {
config false;
description
"Optional penalty associated with a given accumulated
CD and PMD.
This list of triplet cd, pmd, penalty can be used to
sample the function penalty = f(CD, PMD).";
uses cd-pmd-penalty ;
}
leaf max-diff-group-delay {
type int32;
config false;
description "Maximum Differential group delay of this mode
for this lane";
}
list max-polarization-dependent-loss-penalty {
config false;
description
"Optional penalty associated with the maximum acceptable
accumulated polarization dependent loss.
This list of pair pdl and penalty can be used to
sample the function pdl = f(penalty).";
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uses pdl-penalty ;
}
leaf available-modulation-type {
type identityref {
base modulation;
}
config false;
description
"Modulation type the specific transceiver in the list
can support";
}
leaf otsi-carrier-bandwidth {
type frequency-ghz;
config false;
description
"Carrier bandwidth occupancy.
The required bandwidth can be given
by the transceiver vendor or
can be function of the following parameters:
baudrate, nyquist-spacing, roll-off and
cross-talk penalty";
}
leaf min-OSNR {
type snr;
config false;
description "min OSNR measured over 0.1 nm
resolution bandwidth:
if received OSNR at minimum Rx-power is lower than MIN-OSNR,
an increased level of bit-errors post-FEC needs
to be expected.";
// change resolution BW from 12.5 GHz to 0.1 nm
}
leaf min-Q-factor {
type int32;
units "dB";
config false;
description "min Qfactor at FEC threshold";
}
leaf available-baud-rate {
type uint32;
units Bd;
config false;
description
"Baud-rate the specific transceiver in
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the list can support.
Baud-rate is the unit for
symbol rate or modulation rate
in symbols per second or
pulses per second.
It is the number of distinct symbol
changes (signal events) made to the
transmission medium
per second in a digitally
modulated signal or a line code";
}
leaf nyquist-spacing-factor {
type decimal64 {
fraction-digits 4;
range "1..2";
}
config false;
description
"1.x factor to multiply the baud rate
for Nyquist shaped signal";
}
leaf roll-off {
type decimal64 {
fraction-digits 4;
range "0..1";
}
config false;
description
"the roll-off factor (beta with values from 0 to 1)
identifies how the real signal shape exceed
the baud rate. If=0 it is exactly matching
the baud rate.If=1 the signal exceeds the
50% of the baud rate at each side.";
}
leaf xtalk-penalty {
type int32;
config false;
description "";
}
leaf available-fec-type {
type identityref {
base fec-type;
}
config false;
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description "Available FEC";
}
leaf fec-code-rate {
type decimal64 {
fraction-digits 8;
range "0..max";
}
config false;
description "FEC-code-rate";
}
leaf fec-threshold {
type decimal64 {
fraction-digits 8;
range "0..max";
}
config false;
description
"Threshold on the BER, for which FEC
is able to correct errors";
}
} // grouping common-explicit-mode
grouping common-organizational-explicit-mode {
description "Common capability attributes limit range
in case of operational mode and explicit mode.
These attributes are supported separately in
case of application codes";
/* transmitter tuning range (f_tx-min, f_tx-max) */
leaf min-central-frequency {
type frequency-thz;
config false;
description
"This parameter indicates the minimum frequency for
this transceiver.";
}
leaf max-central-frequency {
type frequency-thz;
config false;
description
"This parameter indicates the maximum frequency
for this transceiver.";
}
/* transmitter-tunability-grid */
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leaf minimum-channel-spacing {
type frequency-ghz;
config false;
description
"This paramenter represents the minumum difference in
frequency between two adjacent channels
(ref. G.698.2 sec.7.1.1).
This free value is to permit OTSi's central frequency not
to stay on the G.694.1 grid.";
}
/* supported transmitter power range [p_tx-min, p_tx_max] */
leaf tx-channel-power-min {
type dbm-t;
config false;
description "The minimum output power of this interface";
}
leaf tx-channel-power-max {
type dbm-t;
config false;
description "The maximum output power of this interface";
}
/* supported receiver power range [p_rx-min, p_rx_max] */
leaf rx-channel-power-min {
type dbm-t;
config false;
description "The minimum input power of this interface";
}
leaf rx-channel-power-max {
type dbm-t;
config false;
description "The maximum input power of this interface";
}
leaf rx-total-power-max {
type dbm-t;
config false;
description "Maximum rx optical power for
all the channels";
}
} // grouping common-organizational-explicit-mode
/* This grouping represent the list of configured parameters */
/* values independent of operational mode */
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grouping common-transceiver-configured-param {
description "Capability of an optical transceiver";
leaf otsi-carrier-frequency {
type frequency-thz;
description
"OTSi carrier frequency, equivalent to the
actual configured transmitter frequency";
}
leaf tx-channel-power {
type dbm-t;
description "The current channel transmit power";
}
leaf rx-channel-power {
type dbm-t;
config false;
description "The current channel received power ";
}
leaf rx-total-power {
type dbm-t;
config false;
description "Current total received power";
}
} // grouping for configured attributes out of mode
grouping l0-tunnel-attributes {
description
"Parameters for Layer0 (WSON or Flexi-Grid) Tunnels.";
leaf fec-type {
type identityref {
base fec-type;
}
description
"FEC type.";
}
leaf termination-type {
type identityref {
base term-type;
}
description
"Termination type.";
}
leaf bit-stuffing {
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type boolean;
description
"Bit stuffing enabled/disabled.";
}
}
grouping l0-path-constraints {
description
"Global named path constraints configuration
grouping for Layer0 (WSON or Flexi-Grid) paths.";
leaf wavelength-assignment {
type identityref {
base wavelength-assignment;
}
description "Wavelength Allocation Method";
}
}
grouping frequency-range {
description
"The parameters that define a frequency range.";
leaf lower-frequency {
type frequency-thz;
mandatory true;
description
"The lower frequency boundary of the
frequency range.";
}
leaf upper-frequency {
type frequency-thz;
must '. > ../lower-frequency' {
error-message
"The upper frequency must be greater than the lower
frequency.";
}
mandatory true;
description
"The upper frequency boundary of the
frequency range.";
}
}
}
<CODE ENDS>
Figure 1
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4. Acknowledgements
To be added if any.
5. Contributors
Gabriele Galimberti
Cisco
Email: ggalimbe@cisco.com
Enrico Griseri
Nokia
Email: Enrico.Griseri@nokia.com
Aihua Guo
Futurewei
Email: aihuaguo@futurewei.com
6. IANA Considerations
This memo includes no request to IANA.
All drafts are required to have an IANA considerations section (see
Guidelines for Writing an IANA Considerations Section in RFCs
[RFC5226] for a guide). If the draft does not require IANA to do
anything, the section contains an explicit statement that this is the
case (as above). If there are no requirements for IANA, the section
will be removed during conversion into an RFC by the RFC Editor.
7. Security Considerations
All drafts are required to have a security considerations section.
See RFC 3552 [RFC3552] for a guide.
8. References
8.1. Normative References
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[I-D.ietf-ccamp-layer0-types]
Zheng, H., Lee, Y., Guo, A., Lopez, V., and D. King, "A
YANG Data Model for Layer 0 Types", Work in Progress,
Internet-Draft, draft-ietf-ccamp-layer0-types-09, 29
December 2020, <https://datatracker.ietf.org/doc/html/
draft-ietf-ccamp-layer0-types-09>.
[I-D.ietf-ccamp-optical-impairment-topology-yang]
Lee, Y., Auge, J., Lopez, V., Galimberti, G., and D.
Beller, "A YANG Data Model for Optical Impairment-aware
Topology", Work in Progress, Internet-Draft, draft-ietf-
ccamp-optical-impairment-topology-yang-06, 22 February
2021, <https://datatracker.ietf.org/doc/html/draft-ietf-
ccamp-optical-impairment-topology-yang-06>.
[I-D.ietf-ccamp-wson-yang]
Zheng, H., Lee, Y., Guo, A., Lopez, V., and D. King, "A
YANG Data Model for WSON (Wavelength Switched Optical
Networks)", Work in Progress, Internet-Draft, draft-ietf-
ccamp-wson-yang-28, 29 December 2020,
<https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-
wson-yang-28>.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
[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>.
[RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language",
RFC 7950, DOI 10.17487/RFC7950, August 2016,
<https://www.rfc-editor.org/info/rfc7950>.
[RFC8795] Liu, X., Bryskin, I., Beeram, V., Saad, T., Shah, H., and
O. Gonzalez de Dios, "YANG Data Model for Traffic
Engineering (TE) Topologies", RFC 8795,
DOI 10.17487/RFC8795, August 2020,
<https://www.rfc-editor.org/info/rfc8795>.
8.2. Informative References
[I-D.ietf-ccamp-dwdm-if-param-yang]
Galimberti, G., Kunze, R., Burk, A., Hiremagalur, D., and
G. Grammel, "A YANG model to manage the optical interface
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parameters for an external transponder in a WDM network",
Work in Progress, Internet-Draft, draft-ietf-ccamp-dwdm-
if-param-yang-05, 18 November 2020,
<https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-
dwdm-if-param-yang-05>.
[RFC2629] Rose, M., "Writing I-Ds and RFCs using XML", RFC 2629,
DOI 10.17487/RFC2629, June 1999,
<https://www.rfc-editor.org/info/rfc2629>.
[RFC3552] Rescorla, E. and B. Korver, "Guidelines for Writing RFC
Text on Security Considerations", BCP 72, RFC 3552,
DOI 10.17487/RFC3552, July 2003,
<https://www.rfc-editor.org/info/rfc3552>.
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", RFC 5226,
DOI 10.17487/RFC5226, May 2008,
<https://www.rfc-editor.org/info/rfc5226>.
Authors' Addresses
Dieter Beller (editor)
Nokia
Email: Dieter.Beller@nokia.com
Sergio Belotti (editor)
Nokia
Email: Sergio.Belotti@nokia.com
Haomian Zheng
Huawei
Email: ZhengHaomian@huawei.com
Italo Busi
Huawei
Email: Italo.Busi@huawei.com
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Esther Le Rouzic
Orange
Email: esther.lerouzic@orange.com
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