CCAMP Working Group Y. Lee (Editor) D. Dhody X. Zhang Internet Draft A. Guo Intended status: Standard Track Huawei V. Lopez Telefonica D. King U. of Lancaster B. Yoon ETRI Ricard Vilalta CTTC Expires: April 8, 2018 October 9, 2017 A Yang Data Model for WSON Optical Networks draft-ietf-ccamp-wson-yang-08.txt 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 April 8, 2018 [Page 1] Internet-Draft WSON YANG Model October 2017 The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html This Internet-Draft will expire on April 8, 2018. Copyright Notice Copyright (c) 2017 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction...................................................2 2. YANG Model (Tree Structure)....................................3 3. IETF-WSON-Topology YANG Model..................................4 4. IETF-TE-WSON-Types YANG Model.................................12 5. Security Considerations.......................................14 6. IANA Considerations...........................................15 7. Acknowledgments...............................................15 8. References....................................................16 8.1. Normative References.....................................16 8.2. Informative References...................................16 9. Contributors..................................................16 Authors' Addresses...............................................16 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 April 8, 2017 [Page 2] Internet-Draft WSON YANG Model October 2017 encoding documents [RFC7581] and [RFC7579] that developed protocol independent encodings based on [RFC7446]. This document augments the 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:config/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/nd:node/tet:te/tet:state/tet:te-node- attributes/tet:connectivity-matrices/tet:connectivity-matrix: +--ro wavelength-availability-range? te-wson-types:wavelength-range-type augment /nd:networks/nd:network/lnk:link/tet:te/tet:config/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/lnk:link/tet:te/tet:state/tet:te-link-attributes: +--ro channel-num? int32 +--ro first-channel-frequency? decimal64 +--ro channel-spacing? decimal64 +--ro available-wavelength-info* [priority] +--ro priority uint8 +--ro wavelength-availability-range? te-wson-types:wavelength-range-type augment /nd:networks/nd:network/nd:node/tet:te/tet:config/tet:te-node-attributes: +--rw wson-node +--rw node-type? identityref augment /nd:networks/nd:network/nd:node/tet:te/tet:state/tet:te-node-attributes: +--ro wson-node +--ro node-type? identityref augment /nd:networks/nd:network/nd:node/tet:te/tet:tunnel-termination- point/tet:config: +--rw available-operational-mode* te-wson-types:operational-mode +--rw operational-mode? te-wson-types:operational-mode augment /nd:networks/nd:network/nd:node/tet:te/tet:tunnel-termination- point/tet:state: +--ro available-operational-mode* te-wson-types:operational-mode Lee, et al. Expires April 8, 2017 [Page 3] Internet-Draft WSON YANG Model October 2017 +--ro operational-mode? te-wson-types:operational-mode 3. IETF-WSON-Topology YANG Model file "ietf-wson-topology@2017-10-09.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"; } Lee, et al. Expires April 8, 2017 [Page 4] Internet-Draft WSON YANG Model October 2017 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 "This module contains a collection of YANG definitions for RWA WSON. Copyright (c) 2016 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 2017-10-09 { description "version 8."; reference "RFC XXX: A Yang Data Model for WSON Optical Networks "; Lee, et al. Expires April 8, 2017 [Page 5] Internet-Draft WSON YANG Model October 2017 } 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 { 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."; } } Lee, et al. Expires April 8, 2017 [Page 6] Internet-Draft WSON YANG Model October 2017 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{ 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; } } Lee, et al. Expires April 8, 2017 [Page 7] Internet-Draft WSON YANG Model October 2017 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; description "List of all vendor-specific supported mode identifiers"; } leaf operational-mode { type te-wson-types:operational-mode; description "Vendor-specific mode identifier"; } } Lee, et al. Expires April 8, 2017 [Page 8] Internet-Draft WSON YANG Model October 2017 /* 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."; } description "WSON connectivity matrix state augmentation"; uses wson-wavelength-availability-range; }*/ //FIXING NMDA Lee, et al. Expires April 8, 2017 [Page 9] Internet-Draft WSON YANG Model October 2017 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; } //REMOVING /* Lee, et al. Expires April 8, 2017 [Page 10] Internet-Draft WSON YANG Model October 2017 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 April 8, 2017 [Page 11] Internet-Draft WSON YANG Model October 2017 } 4. IETF-TE-WSON-Types YANG Model file "ietf-te-wson-types@2017-10-09.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 "2017-10-09" { description "Revision 0.1"; 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"; } Lee, et al. Expires April 8, 2017 [Page 12] Internet-Draft WSON YANG Model October 2017 identity wson-node-type { 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"; } Lee, et al. Expires April 8, 2017 [Page 13] Internet-Draft WSON YANG Model October 2017 identity unspecified-wavelength-assignment { base wavelength-assignment; 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 TDB Lee, et al. Expires April 8, 2017 [Page 14] Internet-Draft WSON YANG Model October 2017 6. IANA Considerations TDB 7. Acknowledgments This document was prepared using 2-Word-v2.0.template.dot. Lee, et al. Expires April 8, 2017 [Page 15] Internet-Draft WSON YANG Model October 2017 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 April 8, 2017 [Page 16] Internet-Draft WSON YANG Model October 2017 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 April 8, 2017 [Page 17]