idnits 2.17.1 draft-vergara-ccamp-flexigrid-yang-00.txt: Checking boilerplate required by RFC 5378 and the IETF Trust (see https://trustee.ietf.org/license-info): ---------------------------------------------------------------------------- No issues found here. Checking nits according to https://www.ietf.org/id-info/1id-guidelines.txt: ---------------------------------------------------------------------------- No issues found here. Checking nits according to https://www.ietf.org/id-info/checklist : ---------------------------------------------------------------------------- No issues found here. Miscellaneous warnings: ---------------------------------------------------------------------------- == The copyright year in the IETF Trust and authors Copyright Line does not match the current year -- The document date (November 10, 2014) is 3447 days in the past. Is this intentional? Checking references for intended status: Proposed Standard ---------------------------------------------------------------------------- (See RFCs 3967 and 4897 for information about using normative references to lower-maturity documents in RFCs) == Outdated reference: A later version (-07) exists of draft-ietf-ccamp-flexi-grid-fwk-02 == Outdated reference: A later version (-04) exists of draft-clemm-i2rs-yang-network-topo-01 == Outdated reference: A later version (-04) exists of draft-dharini-netmod-g-698-2-yang-01 Summary: 0 errors (**), 0 flaws (~~), 4 warnings (==), 1 comment (--). Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 1 CCAMP Working Group J.E. Lopez de Vergara 2 Internet Draft Universidad Autonoma de Madrid 3 Intended status: Standards Track V. Lopez 4 Expires: May 2015 O. Gonzalez de Dios 5 Telefonica I+D/GCTO 6 D. King 7 Old Dog Consulting 8 Z. Ali 9 Cisco Systems 10 November 10, 2014 12 A YANG data model for WSON and Flexi-Grid Optical Networks 13 draft-vergara-ccamp-flexigrid-yang-00 15 Status of this Memo 17 This Internet-Draft is submitted in full conformance with the 18 provisions of BCP 78 and BCP 79. This document may not be modified, 19 and derivative works of it may not be created, except to publish it 20 as an RFC and to translate it into languages other than English. 22 Internet-Drafts are working documents of the Internet Engineering 23 Task Force (IETF), its areas, and its working groups. Note that 24 other groups may also distribute working documents as Internet- 25 Drafts. 27 Internet-Drafts are draft documents valid for a maximum of six 28 months and may be updated, replaced, or obsoleted by other documents 29 at any time. It is inappropriate to use Internet-Drafts as reference 30 material or to cite them other than as "work in progress." 32 The list of current Internet-Drafts can be accessed at 33 http://www.ietf.org/ietf/1id-abstracts.txt 35 The list of Internet-Draft Shadow Directories can be accessed at 36 http://www.ietf.org/shadow.html 38 This Internet-Draft will expire on May 10, 2015. 40 Copyright Notice 42 Copyright (c) 2014 IETF Trust and the persons identified as the 43 document authors. All rights reserved. 45 This document is subject to BCP 78 and the IETF Trust's Legal 46 Provisions Relating to IETF Documents 47 (http://trustee.ietf.org/license-info) in effect on the date of 48 publication of this document. Please review these documents 49 carefully, as they describe your rights and restrictions with 50 respect to this document. Code Components extracted from this 51 document must include Simplified BSD License text as described in 52 Section 4.e of the Trust Legal Provisions and are provided without 53 warranty as described in the Simplified BSD License. 55 Abstract 57 This document defines a YANG model for managing dynamic Optical 58 networks, including Wavelength Switched Optical Networks (WSON) and 59 Flexi-Grid DWDM Networks. The model described in this document is 60 composed of two submodels: one to define an optical traffic 61 engineering database, and other one to describe the optical paths or 62 media channels. 64 Table of Contents 66 1. Introduction ................................................ 2 67 2. Conventions used in this document ........................... 3 68 3. Optical network topology model overview ..................... 4 69 4. Main building blocks......................................... 4 70 4.1. Optical TED ............................................ 4 71 4.2. Media-channel/network-media-channel .................... 8 72 5. Example of use ............................................. 10 73 6. Formal Syntax .............................................. 12 74 7. Security Considerations .................................... 12 75 8. IANA Considerations ........................................ 12 76 9. References ................................................. 12 77 9.1. Normative References .................................. 12 78 9.2. Informative References ................................ 13 79 10. Contributors .............................................. 14 80 11. Acknowledgments ........................................... 14 81 Appendix A. YANG models........................................ 15 82 A.1. Optical TED YANG Model ................................ 15 83 A.2. Media Channel YANG Model .............................. 32 84 A.3. License ............................................... 40 85 Authors' Addresses ............................................ 41 87 1. Introduction 89 Internet-based traffic is dramatically increasing every year. 90 Moreover, such traffic is also becoming more dynamic. Thus, 91 transport networks need to evolve from current DWDM systems towards 92 elastic optical networks, based on flexi-grid transmission and 93 switching technologies. This technology aims at increasing both 94 transport network scalability and flexibility, allowing the 95 optimization of bandwidth usage. 97 This document presents a YANG model for objects in the dynamic 98 optical network, including the nodes, transponders and links between 99 them, as well as how such links interconnect nodes and transponders. 101 The model presented in this document considers two different optical 102 technologies: Wavelength Switched Optical Networks (WSON) [5] and 103 flexi-grid DWDM Networks [6]. The YANG model allows the 104 representation of the optical layer of a network, combined with the 105 underlying physical layer. The model is defined in two YANG modules: 107 o Optical-TED (Traffic Engineering Database): This module defines 108 all the information needed to represent an optical node, an 109 optical transponder and an optical link. 111 o Media-channel: This module defines the whole path from a source 112 transponder to the destination through a number of intermediate 113 nodes. 115 This document identifies the WSON and Flexi-Grid optical components, 116 parameters and their values, characterizes the features and the 117 performances of the optical elements. An application example is 118 provided towards the end of the document to better understand their 119 utility. 121 2. Conventions used in this document 123 The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", 124 "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this 125 document are to be interpreted as described in RFC-2119 [1]. 127 In this document, these words will appear with that interpretation 128 only when in ALL CAPS. Lower case uses of these words are not to be 129 interpreted as carrying RFC-2119 significance. 131 In this document, the characters ">>" preceding an indented line(s) 132 indicates a compliance requirement statement using the key words 133 listed above. This convention aids reviewers in quickly identifying 134 or finding the explicit compliance requirements of this RFC. 136 3. Optical network topology model overview 138 YANG is a data modeling language used to model configuration data 139 manipulated by the NETCONF protocol. For more information on YANG, 140 the document [7] provides a tutorial with some examples on how to 141 model the information and use the YANG structures. 143 Several YANG models have already been specified for network 144 configurations. For instance, the work in [8] has proposed a YANG 145 model of a TED, but only covering the IP layer. A YANG model has 146 also been proposed in [9] to configure optical DWDM parameters. On 147 the other hand, a TED has been proposed for optical networks in 148 [10], but this approach did not specify a YANG model to enable its 149 configuration. 151 As stated before, we propose a model to describe an optical topology 152 that is split in two YANG sub-modules: 154 . Optical-TED: In order to be compatible with existing proposals, we 155 augment the definitions contained in [8], by defining the 156 different elements we find in an optical network: a node, a 157 transponder and a link. For that, each of those elements is 158 defined as a container that includes a group of attributes. 159 References to the elements are provided to be later used in the 160 definition of a media channel. It also includes the data types for 161 the type of modulation, the optical technology, the FEC, etc. 162 . Media-channel: This module defines the whole path from a source 163 transponder to the destination through a number of intermediate 164 nodes and links. For this, it takes the information defined before 165 in the optical TED. 166 Next section provides a detailed view of each module. 168 4. Main building blocks 170 Subsections below detail each of the defined YANG modules. They are 171 listed in Appendix A, and have been validated using the pyang tool 172 [11]. 174 4.1. Optical TED 176 The description of the three main components, optical-node, optical- 177 transponder and optical-link is provided below. Optical-sliceable- 178 transponders are also defined. 180 ::= 181 : This element designates a node in the network 183 ::= 184 186 : Contains all the attributes 187 related to the node, such as its unique id, its interfaces or 188 its management addresses. 190 : An unique numeric identifier for the node. It is 191 also used as a reference in order to point to it in the 192 media-channel module. 194 ::= 195 196 [ / ] 198 : The list containing all the 199 information of the interfaces 201 : Determines the interface name. 203 : Port number of the interface. 205 : Boolean value that defines whether the 206 interface is input or not. 208 : Boolean value that defines whether the 209 interface is output or not. 211 : Description of the usage of the interface. 213 : Determines if the interface is numbered 214 or unnumbered. 216 ::= 218 : A interface with its own IP 219 address 221 : Only available if 222 is "numbered-interface". Determines the IP address 223 of the interface. 225 ::=