CCAMP Working Group Y. Lee (Editor) Internet Draft D. Dhody Intended status: Standard Track X. Zhang Expires: August 27, 2018 A. Guo Huawei V. Lopez Telefonica D. King U. of Lancaster B. Yoon ETRI Ricard Vilalta CTTC February 27, 2018 A Yang Data Model for WSON Optical Networks draft-ietf-ccamp-wson-yang-10 Abstract This document provides a YANG data model for the routing and wavelength assignment (RWA) TE topology in wavelength switched optical networks (WSONs). Status of this Memo This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. 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." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt Lee, et al. Expires August 2018 [Page 1] Internet-Draft WSON YANG Model February 2018 The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html This Internet-Draft will expire on August 27, 2018. Copyright Notice Copyright (c) 2018 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction...................................................2 2. YANG Model (Tree Structure)....................................3 3. IETF-WSON-Topology YANG Model..................................4 4. IETF-TE-WSON-Types YANG Model.................................11 5. Security Considerations.......................................13 6. IANA Considerations...........................................14 7. Acknowledgments...............................................14 8. References....................................................15 8.1. Normative References.....................................15 8.2. Informative References...................................15 9. Contributors..................................................15 Authors' Addresses...............................................15 1. Introduction This document provides a YANG data model for the routing and wavelength assignment (RWA) Traffic Engineering (TE) topology in wavelength switched optical networks (WSONs). The YANG model described in this document is a WSON technology-specific Yang model based on the information model developed in [RFC7446] and the two Lee, et al. Expires August 2018 [Page 2] Internet-Draft WSON YANG Model February 2018 encoding documents [RFC7581] and [RFC7579] that developed protocol independent encodings based on [RFC7446]. This document augments the generic TE topology draft [TE-TOPO]. What is not in scope of this document is both impairment-aware WSON and flex-grid. This document defines two YANG models: ietf-wson-topology (Section 3) and ietf-te-wson-types (Section 4). 2. YANG Model (Tree Structure) module: ietf-wson-topology augment /nd:networks/nd:network/nd:network-types/tet:te-topology: +--rw wson-topology! augment /nd:networks/nd:network/nd:node/tet:te/tet:te-node- attributes/tet:connectivity-matrices/tet:connectivity-matrix: +--rw wavelength-availability-range? te-wson-types:wavelength-range-type augment /nd:networks/nd:network/lnk:link/tet:te/tet:te-link-attributes: +--rw channel-num? int32 +--rw first-channel-frequency? decimal64 +--rw channel-spacing? decimal64 +--rw available-wavelength-info* [priority] +--rw priority uint8 +--rw wavelength-availability-range? te-wson-types:wavelength-range- type augment /nd:networks/nd:network/nd:node/tet:te/tet:te-node-attributes: +--rw wson-node +--rw node-type? identityref augment /nd:networks/nd:network/nd:node/tet:te/tet:tunnel-termination-point: +--rw available-operational-mode* te-wson-types:operational-mode +--rw operational-mode? te-wson-types:operational-mode Lee, et al. Expires August 2018 [Page 3] Internet-Draft WSON YANG Model February 2018 3. IETF-WSON-Topology YANG Model file "ietf-wson-topology@2018-02-27.yang" module ietf-wson-topology { //TODO: FIXME //yang-version 1.1; namespace "urn:ietf:params:xml:ns:yang:ietf-wson-topology"; prefix "wson"; import ietf-network { prefix "nd"; } import ietf-network-topology { prefix "lnk"; } import ietf-inet-types { prefix "inet"; } import ietf-te-topology { prefix "tet"; } import ietf-te-wson-types { //Modified prefix "te-wson-types"; } //NOT NEEDED /*import ietf-transport-types { prefix "tran-types"; } */ organization "IETF CCAMP Working Group"; contact "Editor: Young Lee "; description Lee, et al. Expires August 2018 [Page 4] Internet-Draft WSON YANG Model February 2018 "This module contains a collection of YANG definitions for RWA WSON. Copyright (c) 2017 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info)."; revision 2018-02-27 { description "version 10."; reference "RFC XXX: A Yang Data Model for WSON Optical Networks "; } typedef wson-topology-id { type inet:uri; description "The WSON Topology ID"; } grouping wson-topology-type { description "wson-topology type"; container wson-topology { presence "indicates a topology of wson"; description "Container to identify wson topology type"; } } grouping wson-node-attributes { description "WSON node attributes"; container wson-node { Lee, et al. Expires August 2018 [Page 5] Internet-Draft WSON YANG Model February 2018 description "WSON node attrtibutes."; leaf node-type { type identityref { base te-wson-types:wson-node-type; } description "WSON node type."; } } } grouping wson-wavelength-availability-range{ description "wavelength availability range"; leaf wavelength-availability-range{ type te-wson-types:wavelength-range-type; description "range that indicates if a wavelength is available or not on each channel at specified priority level."; } } grouping wson-link-attributes { description "WSON link attributes"; leaf channel-num { type int32; description "Number of OCh channels available"; } leaf first-channel-frequency { type decimal64 { fraction-digits 5; } units THz; description "First channel frequency in the grid"; } leaf channel-spacing { type decimal64 { fraction-digits 5; } units GHz; description "This is fixed channel spacing for WSON, e.g, 12.5, 25, 50, 100, .."; } list available-wavelength-info{ Lee, et al. Expires August 2018 [Page 6] Internet-Draft WSON YANG Model February 2018 key "priority"; max-elements "8"; description "List of available wavelength channels on this link"; leaf priority { type uint8 { range "0..7"; } description "priority"; } uses wson-wavelength-availability-range; } } grouping wson-tp-attributes { description "wson-tp-attributes"; leaf client-facing { type empty; description "if present, it means this tp is a client- facing tp. adding/dropping client signal flow."; } /* //can it be fully covered by interface-switching-capability of base TE model? leaf-list supported-client-signals { type identityref { base tran-types:client-signal; } description "Supported client signals at this TP"; } */ } grouping wson-ttp-attributes { description "WSON tunnel termination point (e.g. tranponder) attributes"; leaf-list available-operational-mode { type te-wson-types:operational-mode; Lee, et al. Expires August 2018 [Page 7] Internet-Draft WSON YANG Model February 2018 description "List of all vendor-specific supported mode identifiers"; } leaf operational-mode { type te-wson-types:operational-mode; description "Vendor-specific mode identifier"; } } /* AUGMENTS */ augment "/nd:networks/nd:network/nd:network-types" + "/tet:te-topology" { description "wson-topology augmented"; uses wson-topology-type; } //FIXING NMDA augment "/nd:networks/nd:network/nd:node/tet:te" +"/tet:te-node-attributes/tet:connectivity-matrices" + "/tet:connectivity-matrix" { when "/nd:networks/nd:network/nd:network-types" +"/tet:te-topology/wson:wson-topology" { description "This augment is only valid for WSON connectivity matrix."; } description "WSON connectivity matrix config augmentation"; uses wson-wavelength-availability-range; } //REMOVING /* augment "/nd:networks/nd:network/nd:node/tet:te/tet:state" +"/tet:te-node-attributes/tet:connectivity-matrices" + "/tet:connectivity-matrix" { when "/nd:networks/nd:network/nd:network-types" +"/tet:te-topology/wson-topology" { description "This augment is only valid for WSON connectivity matrix."; Lee, et al. Expires August 2018 [Page 8] Internet-Draft WSON YANG Model February 2018 } description "WSON connectivity matrix state augmentation"; uses wson-wavelength-availability-range; }*/ //FIXING NMDA augment "/nd:networks/nd:network/lnk:link/tet:te" + "/tet:te-link-attributes" { when "/nd:networks/nd:network/nd:network-types" +"/tet:te-topology/wson:wson-topology" { description "This augment is only valid for WSON."; } description "WSON Link augmentation."; uses wson-link-attributes; } //REMOVING /* augment "/nd:networks/nd:network/lnk:link/tet:te/tet:state" + "/tet:te-link-attributes" { when "/nd:networks/nd:network/nd:network-types" +"/tet:te-topology/wson:wson-topology" { description "This augment is only valid for WSON."; } description "WSON Link augmentation."; uses wson-link-attributes; }*/ //FIXING NMDA augment "/nd:networks/nd:network/nd:node/tet:te" + "/tet:te-node-attributes" { when "/nd:networks/nd:network/nd:network-types" +"/tet:te-topology/wson:wson-topology" { description "This augment is only valid for WSON."; } description "WSON Node augmentation."; uses wson-node-attributes; } Lee, et al. Expires August 2018 [Page 9] Internet-Draft WSON YANG Model February 2018 //REMOVING /* augment "/nd:networks/nd:network/nd:node/tet:te/tet:state" + "/tet:te-node-attributes" { when "/nd:networks/nd:network/nd:network-types" +"/tet:te-topology/wson:wson-topology" { description "This augment is only valid for WSON."; } description "WSON Node augmentation."; uses wson-node-attributes; }*/ //FIXING NMDA augment "/nd:networks/nd:network/nd:node/tet:te" + "/tet:tunnel-termination-point" { when "/nd:networks/nd:network/nd:network-types" +"/tet:te-topology/wson:wson-topology" { description "This augment is only valid for WSON."; } description "WSON tunnel termination point augmentation."; uses wson-ttp-attributes; } //removing /*augment "/nd:networks/nd:network/nd:node/tet:te" + "/tet:tunnel-termination-point/tet:state" { when "/nd:networks/nd:network/nd:network-types" +"/tet:te-topology/wson:wson-topology" { description "This augment is only valid for WSON."; } description "WSON tunnel termination point augmentation."; uses wson-ttp-attributes; }*/ } Lee, et al. Expires August 2018 [Page 10] Internet-Draft WSON YANG Model February 2018 4. IETF-TE-WSON-Types YANG Model file "ietf-te-wson-types@2018-02-27.yang" module ietf-te-wson-types { namespace "urn:ietf:params:xml:ns:yang:ietf-te-wson-types"; prefix "te-wson-types"; organization "IETF CCAMP Working Group"; contact "WG Web: WG List: Editor: Aihua Guo Editor: Young Lee "; description "This module defines WSON types."; revision "2018-02-27" { description "Revision 2"; reference "TBD"; } typedef operational-mode { type string; description "Vendor-specific 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 (11/2009) Section 5.3"; } identity wson-node-type { Lee, et al. Expires August 2018 [Page 11] Internet-Draft WSON YANG Model February 2018 description "WSON node type."; reference ""; } identity wson-node-foadm { base wson-node-type; description "Fixed OADM node."; } identity wson-node-roadm { base wson-node-type; description "ROADM or OXC node."; } identity wson-node-ila { base wson-node-type; description "ILA (In-Line Amplifier) node."; } //ADDED typedef wavelength-range-type { type string { pattern "([1-9][0-9]{0,3}(-[1-9][0-9]{0,3})?" + "(,[1-9][0-9]{0,3}(-[1-9][0-9]{0,3})?)*)"; } description "A list of WDM channel numbers (starting at 1) in ascending order. For example: 1,12-20,40,50-80"; } identity wavelength-assignment { description "Wavelength selection base"; } identity unspecified-wavelength-assignment { base wavelength-assignment; Lee, et al. Expires August 2018 [Page 12] Internet-Draft WSON YANG Model February 2018 description "No method specified"; } identity first-fit-wavelength-asignment { base wavelength-assignment; description "All the available wavelengths are numbered, and this WA method chooses the available wavelength with the lowest index."; } identity random-wavelength-asignment { base wavelength-assignment; description "This WA method chooses an available wavelength randomly."; } identity least-loaded-wavelength-asignment { 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 muli-fiber networks)."; } } 5. Security Considerations The configuration, state, and action data defined in this document are designed to be accessed via a management protocol with a secure transport layer, such as NETCONF [RFC6241]. The NETCONF access control model [RFC6536] provides the means to restrict access for particular NETCONF users to a preconfigured subset of all available NETCONF protocol operations and content. Lee, et al. Expires August 2018 [Page 13] Internet-Draft WSON YANG Model February 2018 A number of configuration data nodes defined in this document are writable/deletable (i.e., "config true") These data nodes may be considered sensitive or vulnerable in some network environments. 6. IANA Considerations This document registers the following namespace URIs in the IETF XML registry [RFC3688]: -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang: ietf-wson-topology Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang: ietf-te-wson-types Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- This document registers the following YANG modules in the YANG Module Names registry [RFC7950]: -------------------------------------------------------------------- name: ietf-wson-topology namespace: urn:ietf:params:xml:ns:yang:ietf-wson-topology reference: RFC XXXX (TDB) -------------------------------------------------------------------- name: ietf-te-wson-types namespace: urn:ietf:params:xml:ns:yang: ietf-te-wson-types reference: RFC XXXX (TDB) -------------------------------------------------------------------- 7. Acknowledgments This document was prepared using 2-Word-v2.0.template.dot. Lee, et al. Expires August 2018 [Page 14] Internet-Draft WSON YANG Model February 2018 8. References 8.1. Normative References [TE-TOPO] X. Liu, et al., "YANG Data Model for TE Topologies", work in progress: draft-ietf-teas-yang-te-topo. 8.2. Informative References [RFC7446] Y. Lee, G. Bernstein, D. Li, W. Imajuku, "Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks", RFC 7446, Feburary 2015. [RFC7579] G. Bernstein, Y. Lee, D. Li, W. Imajuku, "General Network Element Constraint Encoding for GMPLS Controlled Networks", RFC 7579, June 2015. [RFC7581] G. Bernstein, Y. Lee, D. Li, W. Imajuku, "Routing and Wavelength Assignment Information Encoding for Wavelength Switched Optical Networks", RFC 7581, June 2015. 9. Contributors Authors' Addresses Young Lee (ed.) Huawei Technologies 5340 Legacy Drive, Building 3 Plano, TX 75023 USA Phone: (469) 277-5838 Email: leeyoung@huawei.com Dhruv Dhody Huawei Technologies India Pvt. Ltd, Near EPIP Industrial Area, Kundalahalli Village, Whitefield, Bangalore - 560 037 [H1-2A-245] Lee, et al. Expires August 2018 [Page 15] Internet-Draft WSON YANG Model February 2018 Email: dhruv.dhody@huawei.com Xian Zhang Huawei Technologies Email: zhang.xian@huawei.com Aihua Guo Huawei Technologies Email: aihuaguo@huawei.com Victor Lopez Telefonica Email: victor.lopezalvarez@telefonica.com Daniel King University of Lancaster Email: d.king@lancaster.ac.uk Bin Yeong Yoon ETRI 218 Gaijeongro, Yuseong-gu Daejeon, Korea Email: byyun@etri.re.kr Ricard Vilalta CTTC Email: ricard.vilalta@cttc.es Lee, et al. Expires August 2018 [Page 16]