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diff --git a/doc/rfc/rfc9093.txt b/doc/rfc/rfc9093.txt new file mode 100644 index 0000000..16a2ae9 --- /dev/null +++ b/doc/rfc/rfc9093.txt @@ -0,0 +1,1004 @@ + + + + +Internet Engineering Task Force (IETF) 郑好棉 (H. Zheng) +Request for Comments: 9093 华为技术有限公司 (Huawei Technologies) +Category: Standards Track Y. Lee +ISSN: 2070-1721 Samsung + A. Guo + Futurewei + V. Lopez + Nokia + D. King + University of Lancaster + August 2021 + + + A YANG Data Model for Layer 0 Types + +Abstract + + This document defines a collection of common data types and groupings + in the YANG data modeling language. These derived common types and + groupings are intended to be imported by modules that model Layer 0 + optical Traffic Engineering (TE) configuration and state capabilities + such as Wavelength Switched Optical Networks (WSONs) and flexi-grid + Dense Wavelength Division Multiplexing (DWDM) networks. + +Status of This Memo + + This is an Internet Standards Track document. + + This document is a product of the Internet Engineering Task Force + (IETF). It represents the consensus of the IETF community. It has + received public review and has been approved for publication by the + Internet Engineering Steering Group (IESG). Further information on + Internet Standards is available in Section 2 of RFC 7841. + + Information about the current status of this document, any errata, + and how to provide feedback on it may be obtained at + https://www.rfc-editor.org/info/rfc9093. + +Copyright Notice + + Copyright (c) 2021 IETF Trust and the persons identified as the + document authors. All rights reserved. + + This document is subject to BCP 78 and the IETF Trust's Legal + Provisions Relating to IETF Documents + (https://trustee.ietf.org/license-info) in effect on the date of + publication of this document. Please review these documents + carefully, as they describe your rights and restrictions with respect + to this document. Code Components extracted from this document must + include Simplified BSD License text as described in Section 4.e of + the Trust Legal Provisions and are provided without warranty as + described in the Simplified BSD License. + +Table of Contents + + 1. Introduction + 1.1. Terminology and Notations + 1.2. Prefix in Data Node Names + 2. Layer 0 Types Module Contents + 3. YANG Module for Layer 0 Types + 4. Security Considerations + 5. IANA Considerations + 6. References + 6.1. Normative References + 6.2. Informative References + Acknowledgements + Contributors + Authors' Addresses + +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 the Network + Configuration Protocol (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 aspects) for Layer 0 optical networks in + model(s) defined outside of this document. The applicability of + Layer 0 types specified in this document includes Wavelength Switched + Optical Networks (WSONs) [RFC6163] [ITU-Tg6982] and flexi-grid Dense + Wavelength Division Multiplexing (DWDM) networks [RFC7698] + [ITU-Tg6941]. + +1.1. Terminology and Notations + + Refer to [RFC7446] and [RFC7581] for the key terms used in this + document, and the terminology for describing YANG data models can be + found in [RFC7950]. + + The YANG data model in this document conforms to the Network + Management Datastore Architecture defined in [RFC8342]. + +1.2. Prefix in Data Node Names + + In this document, names of data nodes and other data model objects + are prefixed using the standard prefix associated with the + corresponding YANG imported modules. + + +==========+===================+===========+ + | Prefix | YANG module | Reference | + +==========+===================+===========+ + | l0-types | ietf-layer0-types | RFC 9093 | + +----------+-------------------+-----------+ + + Table 1: Data Node Names + + The YANG module "ietf-layer0-types" (defined in Section 3) references + [RFC4203], [RFC6163], [RFC6205], [RFC7698], [RFC7699], [RFC8363], + [ITU-Tg6941], and [ITU-Tg6942]. + +2. Layer 0 Types Module Contents + + This document defines a YANG module for common Layer 0 types, ietf- + layer0-types. This module is used for WSON and flexi-grid DWDM + networks. The "ietf-layer0-types" module contains the following YANG + reusable types and groupings: + + l0-grid-type: + A base YANG identity for the grid type as defined in [RFC6163] and + [RFC7698]. + + dwdm-ch-spc-type: + A base YANG identity for the DWDM channel-spacing type as defined + in [RFC6205]. + + cwdm-ch-spc-type: + A base YANG identity for the Coarse Wavelength Division + Multiplexing (CWDM) channel-spacing type as defined in [RFC6205]. + + wson-label-start-end: + The WSON label range was defined in [RFC6205], and the generic + topology model defines the label-start/label-end in [RFC8795]. + This grouping shows the WSON-specific label-start and label-end + information. + + wson-label-hop: + The WSON label range was defined in [RFC6205], and the generic + topology model defines the label-hop in [RFC8795]. This grouping + shows the WSON-specific label-hop information. + + l0-label-range-info: + A YANG grouping that defines the Layer 0 label range information + applicable for WSON as defined in [RFC6205]. This grouping is + used in the flexi-grid DWDM by adding more flexi-grid-specific + parameters. + + wson-label-step: + A YANG grouping that defines label steps for WSON as defined in + [RFC8776]. + + flexi-grid-label-start-end: + The flexi-grid label range was defined in [RFC7698], and the + generic topology model defines the label-start/label-end in + [RFC8795]. This grouping shows the flexi-grid-specific label- + start and label-end information. + + flexi-grid-label-hop: + The flexi-grid label range was defined in [RFC7698], and the + generic topology model defines the label-hop in [RFC8795]. This + grouping shows the WSON-specific label-hop information. + + flexi-grid-label-range-info: + A YANG grouping that defines flexi-grid label range information as + defined in [RFC7698] and [RFC8363]. + + flexi-grid-label-step: + A YANG grouping that defines flexi-grid label steps as defined in + [RFC8776]. + +3. YANG Module for Layer 0 Types + + <CODE BEGINS> file "ietf-layer0-types@2021-08-13.yang" + module ietf-layer0-types { + yang-version 1.1; + namespace "urn:ietf:params:xml:ns:yang:ietf-layer0-types"; + prefix l0-types; + + organization + "IETF CCAMP Working Group"; + contact + "WG Web: <https://datatracker.ietf.org/wg/ccamp/> + WG List: <mailto:ccamp@ietf.org> + + Editor: Haomian Zheng + <mailto:zhenghaomian@huawei.com> + + Editor: Young Lee + <mailto:younglee.tx@gmail.com> + + Editor: Aihua Guo + <mailto:aihuaguo.ietf@gmail.com> + + Editor: Victor Lopez + <mailto:victor.lopez@nokia.com> + + Editor: Daniel King + <mailto:d.king@lancaster.ac.uk>"; + + description + "This module defines Optical Layer 0 types. This module + provides groupings that can be applicable to Layer 0 + Fixed Optical Networks (e.g., CWDM (Coarse Wavelength + Division Multiplexing) and DWDM (Dense Wavelength Division + Multiplexing)) and flexi-grid optical networks. + + 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 + Legal Provisions Relating to IETF Documents + (https://trustee.ietf.org/license-info). + + This version of this YANG module is part of RFC 9093; see + the RFC itself for full legal notices."; + + revision 2021-08-13 { + description + "Initial version"; + reference + "RFC 9093: A YANG Data Model for Layer 0 Types"; + } + + typedef dwdm-n { + type int16; + description + "The given value 'N' is used to determine the nominal central + frequency. + + The nominal central frequency, 'f', is defined by: + f = 193100.000 GHz + N x channel spacing (measured in GHz), + + where 193100.000 GHz (193.100000 THz) is the ITU-T 'anchor + frequency' for transmission over the DWDM grid, and where + 'channel spacing' is defined by the dwdm-ch-spc-type."; + reference + "RFC6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers, + ITU-T G.694.1 (10/2020): Spectral grids for WDM applications: + DWDM frequency grid"; + } + + typedef cwdm-n { + type int16; + description + "The given value 'N' is used to determine the nominal central + wavelength. + + The nominal central wavelength is defined by: + Wavelength = 1471 nm + N x channel spacing (measured in nm) + + where 1471 nm is the conventional 'anchor wavelength' for + transmission over the CWDM grid, and where 'channel spacing' + is defined by the cwdm-ch-spc-type."; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers, + ITU-T G.694.2 (12/2003): Spectral grids for WDM applications: + CWDM wavelength grid"; + } + + typedef flexi-n { + type int16; + description + "The given value 'N' is used to determine the nominal central + frequency. + + The nominal central frequency, 'f', is defined by: + f = 193100.000 GHz + N x channel spacing (measured in GHz), + + where 193100.000 GHz (193.100000 THz) is the ITU-T 'anchor + frequency' for transmission over the DWDM grid, and where + 'channel spacing' is defined by the flexi-ch-spc-type. + + Note that the term 'channel spacing' can be substituted by the + term 'nominal central frequency granularity' defined in + clause 8 of ITU-T G.694.1."; + reference + "RFC 7698: Framework and Requirements for GMPLS-Based Control + of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) + Networks, + ITU-T G.694.1 (10/2020): Spectral grids for WDM applications: + DWDM frequency grid"; + } + + typedef flexi-m { + type uint16; + description + "The given value 'M' is used to determine the slot width. + + A slot width is defined by: + slot width = M x SWG (measured in GHz), + + where SWG is defined by the flexi-slot-width-granularity."; + reference + "RFC 7698: Framework and Requirements for GMPLS-Based Control + of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) + Networks. + ITU-T G.694.1 (10/2020): Spectral grids for WDM applications: + DWDM frequency grid"; + } + + identity l0-grid-type { + description + "Layer 0 grid type"; + reference + "RFC 6163: Framework for GMPLS and Path Computation Element + (PCE) Control of Wavelength Switched Optical Networks (WSONs), + ITU-T G.694.1 (10/2020): Spectral grids for WDM applications: + DWDM frequency grid, + ITU-T G.694.2 (12/2003): Spectral grids for WDM applications: + CWDM wavelength grid"; + } + + identity flexi-grid-dwdm { + base l0-grid-type; + description + "Flexi-grid"; + reference + "RFC 7698: Framework and Requirements for GMPLS-Based Control + of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) + Networks, + ITU-T G.694.1 (10/2020): Spectral grids for WDM applications: + DWDM frequency grid"; + } + + identity wson-grid-dwdm { + base l0-grid-type; + description + "DWDM grid"; + reference + "RFC 6163:Framework for GMPLS and Path Computation Element + (PCE) Control of Wavelength Switched Optical Networks (WSONs), + ITU-T G.694.1 (10/2020): Spectral grids for WDM applications: + DWDM frequency grid"; + } + + identity wson-grid-cwdm { + base l0-grid-type; + description + "CWDM grid"; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers, + ITU-T G.694.2 (12/2003): Spectral grids for WDM applications: + CWDM wavelength grid"; + } + + identity dwdm-ch-spc-type { + description + "DWDM channel-spacing type"; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers, + ITU-T G.694.1 (10/2020): Spectral grids for WDM applications: + DWDM frequency grid"; + } + + identity dwdm-100ghz { + base dwdm-ch-spc-type; + description + "100 GHz channel spacing"; + } + + identity dwdm-50ghz { + base dwdm-ch-spc-type; + description + "50 GHz channel spacing"; + } + + identity dwdm-25ghz { + base dwdm-ch-spc-type; + description + "25 GHz channel spacing"; + } + + identity dwdm-12p5ghz { + base dwdm-ch-spc-type; + description + "12.5 GHz channel spacing"; + } + + identity flexi-ch-spc-type { + description + "Flexi-grid channel-spacing type"; + reference + "RFC 7698: Framework and Requirements for GMPLS-Based Control + of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) + Networks, + ITU-T G.694.1 (10/2020): Spectral grids for WDM applications: + DWDM frequency grid"; + } + + identity flexi-ch-spc-6p25ghz { + base flexi-ch-spc-type; + description + "6.25 GHz channel spacing"; + } + + identity flexi-slot-width-granularity { + description + "Flexi-grid slot width granularity"; + } + + identity flexi-swg-12p5ghz { + base flexi-slot-width-granularity; + description + "12.5 GHz slot width granularity"; + } + + identity cwdm-ch-spc-type { + description + "CWDM channel-spacing type"; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers, + ITU-T G.694.2 (12/2003): Spectral grids for WDM applications: + CWDM wavelength grid"; + } + + identity cwdm-20nm { + base cwdm-ch-spc-type; + description + "20nm channel spacing"; + } + + /* Groupings. */ + + grouping wson-label-start-end { + description + "The WSON label-start or label-end used to specify WSON label + range."; + choice grid-type { + description + "Label for DWDM or CWDM grid"; + case dwdm { + leaf dwdm-n { + when "derived-from-or-self(../../../grid-type, + \"wson-grid-dwdm\")" { + description + "Valid only when grid type is DWDM."; + } + type l0-types:dwdm-n; + description + "The central frequency of DWDM."; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable + (LSC) Label Switching Routers"; + } + } + case cwdm { + leaf cwdm-n { + when "derived-from-or-self(../../../grid-type, + \"wson-grid-cwdm\")" { + description + "Valid only when grid type is CWDM."; + } + type l0-types:cwdm-n; + description + "Channel wavelength computing input."; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable + (LSC) Label Switching Routers"; + } + } + } + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers"; + } + + grouping wson-label-hop { + description + "Generic label-hop information for WSON"; + choice grid-type { + description + "Label for DWDM or CWDM grid"; + case dwdm { + choice single-or-super-channel { + description + "single or super channel"; + case single { + leaf dwdm-n { + type l0-types:dwdm-n; + description + "The given value 'N' is used to determine the + nominal central frequency."; + } + } + case super { + leaf-list subcarrier-dwdm-n { + type l0-types:dwdm-n; + description + "The given values 'N' are used to determine the + nominal central frequency for each subcarrier + channel."; + reference + "ITU-T Recommendation G.694.1: Spectral grids for + WDM applications: DWDM frequency grid"; + } + } + } + } + case cwdm { + leaf cwdm-n { + type l0-types:cwdm-n; + description + "The given value 'N' is used to determine the nominal + central wavelength."; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable + (LSC) Label Switching Routers"; + } + } + } + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers"; + } + + grouping l0-label-range-info { + description + "Information about Layer 0 label range."; + leaf grid-type { + type identityref { + base l0-grid-type; + } + description + "Grid type"; + } + leaf priority { + type uint8; + description + "Priority in Interface Switching Capability Descriptor + (ISCD)."; + reference + "RFC 4203: OSPF Extensions in Support of Generalized + Multi-Protocol Label Switching (GMPLS)"; + } + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers"; + } + + grouping wson-label-step { + description + "Label step information for WSON"; + choice l0-grid-type { + description + "Grid type: DWDM, CWDM, etc."; + case dwdm { + leaf wson-dwdm-channel-spacing { + when "derived-from-or-self(../../grid-type, + \"wson-grid-dwdm\")" { + description + "Valid only when grid type is DWDM."; + } + type identityref { + base dwdm-ch-spc-type; + } + description + "Label-step is the channel spacing (GHz), e.g., 100.000, + 50.000, 25.000, or 12.500 GHz for DWDM."; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable + (LSC) Label Switching Routers"; + } + } + case cwdm { + leaf wson-cwdm-channel-spacing { + when "derived-from-or-self(../../grid-type, + \"wson-grid-cwdm\")" { + description + "Valid only when grid type is CWDM."; + } + type identityref { + base cwdm-ch-spc-type; + } + description + "Label-step is the channel spacing (nm), i.e., 20 nm + for CWDM, which is the only value defined for CWDM."; + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable + (LSC) Label Switching Routers"; + } + } + } + reference + "RFC 6205: Generalized Labels for Lambda-Switch-Capable (LSC) + Label Switching Routers, + ITU-T G.694.2 (12/2003): Spectral grids for WDM applications: + CWDM wavelength grid"; + } + + grouping flexi-grid-label-start-end { + description + "The flexi-grid label-start or label-end used to specify + flexi-grid label range."; + leaf flexi-n { + type l0-types:flexi-n; + description + "The given value 'N' is used to determine the nominal + central frequency."; + } + reference + "RFC 7698: Framework and Requirements for GMPLS-Based Control + of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) + Networks"; + } + + grouping flexi-grid-frequency-slot { + description + "Flexi-grid frequency slot grouping."; + uses flexi-grid-label-start-end; + leaf flexi-m { + type l0-types:flexi-m; + description + "The given value 'M' is used to determine the slot width."; + } + reference + "RFC 7698: Framework and Requirements for GMPLS-Based Control + of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) + Networks"; + } + + grouping flexi-grid-label-hop { + description + "Generic label-hop information for flexi-grid"; + choice single-or-super-channel { + description + "single or super channel"; + case single { + uses flexi-grid-frequency-slot; + } + case super { + list subcarrier-flexi-n { + key "flexi-n"; + uses flexi-grid-frequency-slot; + description + "List of subcarrier channels for flexi-grid super + channel."; + } + } + } + reference + "RFC 7698: Framework and Requirements for GMPLS-Based Control + of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) + Networks"; + } + + grouping flexi-grid-label-range-info { + description + "Flexi-grid-specific label range related information"; + uses l0-label-range-info; + container flexi-grid { + description + "flexi-grid definition"; + leaf slot-width-granularity { + type identityref { + base flexi-slot-width-granularity; + } + default "flexi-swg-12p5ghz"; + description + "Minimum space between slot widths. Default is 12.500 + GHz."; + reference + "RFC 7698: Framework and Requirements for GMPLS-Based + Control of Flexi-Grid Dense Wavelength Division + Multiplexing (DWDM) Networks"; + } + leaf min-slot-width-factor { + type uint16 { + range "1..max"; + } + default "1"; + description + "A multiplier of the slot width granularity, indicating + the minimum slot width supported by an optical port. + + Minimum slot width is calculated by: + Minimum slot width (GHz) = + min-slot-width-factor * slot-width-granularity."; + reference + "RFC 8363: GMPLS OSPF-TE Extensions in Support of Flexi- + Grid Dense Wavelength Division Multiplexing (DWDM) + Networks"; + } + + leaf max-slot-width-factor { + type uint16 { + range "1..max"; + } + must '. >= ../min-slot-width-factor' { + error-message + "Maximum slot width must be greater than or equal to + minimum slot width."; + } + description + "A multiplier of the slot width granularity, indicating + the maximum slot width supported by an optical port. + + Maximum slot width is calculated by: + Maximum slot width (GHz) = + max-slot-width-factor * slot-width-granularity + + If specified, maximum slot width must be greater than or + equal to minimum slot width. If not specified, maximum + slot width is equal to minimum slot width."; + reference + "RFC 8363: GMPLS OSPF-TE Extensions in Support of Flexi- + Grid Dense Wavelength Division Multiplexing (DWDM) + Networks"; + } + } + } + + grouping flexi-grid-label-step { + description + "Label step information for flexi-grid"; + leaf flexi-grid-channel-spacing { + type identityref { + base flexi-ch-spc-type; + } + default "flexi-ch-spc-6p25ghz"; + description + "Label-step is the nominal central frequency granularity + (GHz), e.g., 6.25 GHz."; + reference + "RFC 7699: Generalized Labels for the Flexi-Grid in Lambda + Switch Capable (LSC) Label Switching Routers"; + } + leaf flexi-n-step { + type uint8; + description + "This attribute defines the multiplier for the supported + values of 'N'. + + For example, given a grid with a nominal central frequency + granularity of 6.25 GHz, the granularity of the supported + values of the nominal central frequency could be 12.5 GHz. + In this case, the values of flexi-n should be even and this + constraint is reported by setting the flexi-n-step to 2. + + This attribute is also known as central frequency + granularity in RFC 8363."; + reference + "RFC 8363: GMPLS OSPF-TE Extensions in Support of Flexi-Grid + Dense Wavelength Division Multiplexing (DWDM) Networks"; + } + } + } + <CODE ENDS> + +4. Security Considerations + + The YANG module specified in this document defines a schema 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. The NETCONF protocol over + Secure Shell (SSH) specification [RFC6242] describes a method for + invoking and running NETCONF within a Secure Shell (SSH) session as + an SSH subsystem. + + The objects in this YANG module are common data types and groupings. + No object in this module can be read or written to. These + definitions can be imported and used by other Layer 0 specific + modules. It is critical to consider how imported definitions will be + utilized and accessible via RPC operations, as the resultant schema + will have data nodes that can be writable, or readable, and will have + a significant effect on the network operations if used incorrectly or + maliciously. All of these considerations belong in the document that + defines the modules that import from this YANG module. Therefore, it + is important to manage access to resultant data nodes that are + considered sensitive or vulnerable in some network environments. + + The security considerations spelled out in the YANG 1.1 specification + [RFC7950] apply for this document as well. + +5. IANA Considerations + + IANA has assigned new URIs from the "IETF XML Registry" [RFC3688] as + follows: + + URI: urn:ietf:params:xml:ns:yang:ietf-layer0-types + Registrant Contact: The IESG + XML: N/A; the requested URI is an XML namespace. + + This document registers the following YANG module in the "YANG Module + Names" registry [RFC7950]. + + Name: ietf-layer0-types + Namespace: urn:ietf:params:xml:ns:yang:ietf-layer0-types + Prefix: l0-types + Reference: RFC 9093 + +6. References + +6.1. Normative References + + [ITU-Tg6982] + ITU-T, "Amplified multichannel dense wavelength division + multiplexing applications with single channel optical + interfaces", ITU-T Recommendation G.698.2, November 2018. + + [RFC4203] Kompella, K., Ed. and Y. Rekhter, Ed., "OSPF Extensions in + Support of Generalized Multi-Protocol Label Switching + (GMPLS)", RFC 4203, DOI 10.17487/RFC4203, October 2005, + <https://www.rfc-editor.org/info/rfc4203>. + + [RFC6163] Lee, Y., Ed., Bernstein, G., Ed., and W. Imajuku, + "Framework for GMPLS and Path Computation Element (PCE) + Control of Wavelength Switched Optical Networks (WSONs)", + RFC 6163, DOI 10.17487/RFC6163, April 2011, + <https://www.rfc-editor.org/info/rfc6163>. + + [RFC6205] Otani, T., Ed. and D. Li, Ed., "Generalized Labels for + Lambda-Switch-Capable (LSC) Label Switching Routers", + RFC 6205, DOI 10.17487/RFC6205, March 2011, + <https://www.rfc-editor.org/info/rfc6205>. + + [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>. + + [RFC7698] Gonzalez de Dios, O., Ed., Casellas, R., Ed., Zhang, F., + Fu, X., Ceccarelli, D., and I. Hussain, "Framework and + Requirements for GMPLS-Based Control of Flexi-Grid Dense + Wavelength Division Multiplexing (DWDM) Networks", + RFC 7698, DOI 10.17487/RFC7698, November 2015, + <https://www.rfc-editor.org/info/rfc7698>. + + [RFC7699] Farrel, A., King, D., Li, Y., and F. Zhang, "Generalized + Labels for the Flexi-Grid in Lambda Switch Capable (LSC) + Label Switching Routers", RFC 7699, DOI 10.17487/RFC7699, + November 2015, <https://www.rfc-editor.org/info/rfc7699>. + + [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>. + + [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>. + + [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>. + + [RFC8363] Zhang, X., Zheng, H., Casellas, R., Gonzalez de Dios, O., + and D. Ceccarelli, "GMPLS OSPF-TE Extensions in Support of + Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) + Networks", RFC 8363, DOI 10.17487/RFC8363, May 2018, + <https://www.rfc-editor.org/info/rfc8363>. + + [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>. + + [RFC8776] Saad, T., Gandhi, R., Liu, X., Beeram, V., and I. Bryskin, + "Common YANG Data Types for Traffic Engineering", + RFC 8776, DOI 10.17487/RFC8776, June 2020, + <https://www.rfc-editor.org/info/rfc8776>. + + [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>. + +6.2. Informative References + + [ITU-Tg6941] + ITU-T, "Spectral grids for WDM applications: DWDM + frequency grid", ITU-T Recommendation G.694.1, October + 2020. + + [ITU-Tg6942] + ITU-T, "Spectral grids for WDM applications: CWDM + wavelength grid", ITU-T Recommendation G.694.2, December + 2003. + + [RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688, + DOI 10.17487/RFC3688, January 2004, + <https://www.rfc-editor.org/info/rfc3688>. + + [RFC7446] Lee, Y., Ed., Bernstein, G., Ed., Li, D., and W. Imajuku, + "Routing and Wavelength Assignment Information Model for + Wavelength Switched Optical Networks", RFC 7446, + DOI 10.17487/RFC7446, February 2015, + <https://www.rfc-editor.org/info/rfc7446>. + + [RFC7581] Bernstein, G., Ed., Lee, Y., Ed., Li, D., Imajuku, W., and + J. Han, "Routing and Wavelength Assignment Information + Encoding for Wavelength Switched Optical Networks", + RFC 7581, DOI 10.17487/RFC7581, June 2015, + <https://www.rfc-editor.org/info/rfc7581>. + +Acknowledgements + + The authors and the working group give their sincere thanks to Robert + Wilton for the YANG doctor review and Tom Petch for his comments + during the model and document development. + +Contributors + + Dhruv Dhody + Huawei + + Email: dhruv.ietf@gmail.com + + + Bin Yeong Yoon + ETRI + + Email: byyun@etri.re.kr + + + Ricard Vilalta + CTTC + + Email: ricard.vilalta@cttc.es + + + Italo Busi + Huawei + + Email: Italo.Busi@huawei.com + + +Authors' Addresses + + Haomian Zheng + Huawei Technologies + H1, Huawei Xiliu Beipo Village, Songshan Lake + Dongguan + Guangdong, 523808 + China + + Email: zhenghaomian@huawei.com + + Additional contact information: + + 郑好棉 + 中国 + 523808 + 广东 东莞 + 松山湖华为溪流背坡村H1 + 华为技术有限公司 + + + Young Lee + Samsung + South Korea + + Email: younglee.tx@gmail.com + + + Aihua Guo + Futurewei + + Email: aihuaguo.ietf@gmail.com + + + Victor Lopez + Nokia + + Email: victor.lopez@nokia.com + + + Daniel King + University of Lancaster + + Email: d.king@lancaster.ac.uk |