1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T G.8052/Y.1346 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (11/2016) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Packet over Transport aspects Ethernet over Transport aspects SERIES Y: GLOBAL I
2、NFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Internet protocol aspects Transport Protocol-neutral management information model for the Ethernet transport capable network element Recommendation ITU-T G.8052/Y.1346 ITU-T G-SERIES R
3、ECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON META
4、LLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699
5、 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.70
6、00G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 Ethernet over Transport aspects G.8000G.8099 MPLS over Transport aspects G.8100G.8199 Synchronization, quality and availability targets G.8200G.8299 Service Management G.8600G.8699 ACCESS NETWORKS G.9000G.9999 For further details, please refer to t
7、he list of ITU-T Recommendations. Rec. ITU-T G.8052/Y.1346 (11/2016) i Recommendation ITU-T G.8052/Y.1346 Protocol-neutral management information model for the Ethernet transport capable network element Summary Recommendation ITU-T G.8052/Y.1346 contains the protocol neutral UML information model fo
8、r Ethernet transport network (NE) management. The model is based on the Ethernet equipment functions specified in Recommendation ITU-T G.8021/Y.1341, generic management requirements in Recommendation ITU-T G.7710/Y.1701, and Ethernet specific management requirements in Recommendation ITU-T G.8051/Y.
9、1345. The 2016 revision of this Recommendation changes the UML modelling tool from RSA to open source Papyrus tool, updates the Recommendation ITU-T G.8052/Y.1346 information model to align it with the Recommendation ITU-T G.7711/Y.1702 v2.0 Core information model, drops subclassing of the TP classe
10、s from Recommendation ITU-T M.3160, and supports the additional management requirements in Recommendation ITU-T G.8051/Y.1345. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.8052/Y.1346 2013-08-29 15 11.1002/1000/12023 2.0 ITU-T G.8052/Y.1346 2016-11-13 15 11.1002/1000/13
11、097 Keywords Carrier Ethernet, information model, protocol-neutral, transport resource, UML. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en
12、. ii Rec. ITU-T G.8052/Y.1346 (11/2016) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent org
13、an of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the
14、topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are
15、prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendatio
16、n may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used
17、to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectua
18、l Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received not
19、ice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU
20、2017 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.8052/Y.1346 (11/2016) iii Table of Contents Page 1 Scope . 1 2 References . 2 3 Definitions 4 3.1 Terms defined elsewhere 4 3.2 Terms defined in
21、 this Recommendation . 4 4 Abbreviations and acronyms 4 5 Conventions 7 5.1 Information modelling conventions . 7 5.2 Equipment function conventions 8 5.3 Conventions defined in this Recommendation . 10 6 Overview of the model . 12 6.1 ETH sub-layer 14 6.2 Basic configuration structure 17 6.3 Locati
22、on (topology) of OAM functions . 20 6.4 MI groupings and mapping 22 7 Modelling of Ethernet functions . 39 7.1 OAM compound functions . 39 7.2 TCS Function 57 7.3 Performance monitoring . 59 7.4 Ethernet multiplexing . 62 7.5 Connection function . 63 7.6 LAG management modelling . 70 7.7 PhysicalSub
23、system modelling 72 8 UML model file 72 Appendix I UML modelling guidelines 74 Appendix II Mapping of ITU-T G.8021/Y.1341 atomic functions to ITU-T G.8052/Y.1346 model artefacts 75 Appendix III UML model data dictionary 76 Bibliography. 77 iv Rec. ITU-T G.8052/Y.1346 (11/2016) Introduction This Reco
24、mmendation contains the object classes for the Ethernet transport network element (NE) management. It includes the termination points (TP), maintenance entity group (MEG) end point (MEP), MEG intermediate point (MIP), traffic conditioning and shaping (TCS), loss measurement (LM), delay measurement (
25、DM), and the general performance monitoring (PM) current data (CD) and history data (HD). The TP, MEP, MIP, LM, DM, and TCS object classes support the configuration and fault management functions as specified in ITU-T G.8051. The Ethernet TPs are modelled as subclasses of the generic Global Class de
26、fined in Recommendation ITU-T G.7711 and for extending LTP and LP classes of ITU-T G.7711. The Ethernet general PM CD and HD object classes are modelled as subclasses of the generic current data and history data defined in ITU-T Q.822. The Ethernet general CD and HD object classes support only the q
27、uality of service (QoS) directly related PM parameters, i.e., severely errored second (SES) and unavailable second (UAS), for service level agreement (SLA) verification. The additional PM object classes for supporting loss measurement (LM) and delay measurement (DM) monitoring uses the general CD an
28、d HD object classes as super classes. The object model defined in this Recommendation is protocol-neutral with respect to management protocols. The model could be used as the base for further defining the information model for any specific management protocol. The model in this Recommendation has be
29、en specified using the open source UML modelling tool “Papyrus“. Rec. ITU-T G.8052/Y.1346 (11/2016) 1 Recommendation ITU-T G.8052/Y.1346 Protocol-neutral management information model for the Ethernet transport capable network element 1 Scope This Recommendation provides a management-protocol-neutral
30、 information model for managing network elements in the Ethernet transport network as defined in ITU-T G.8010. It identifies the telecommunications management network (TMN) managed entities required for the management of Ethernet transport network elements. These entities are relevant to information
31、 exchanged across standardized interfaces defined in ITU-T M.3010 TMN architecture. The management-protocol-neutral information model should be used as the base for defining management-protocol-specific information models, for example, XML (web service or Netconf/Yang) information model, common obje
32、ct request broker architecture (CORBA) interface definition language (IDL) model, and simple network management protocol (SNMP) management information base (MIB). The information model defined in this Recommendation is an augmentation to the generic code model specified in ITU-T G.7711 for managing
33、Ethernet transport resources. The core information model defined in ITU-T G.7711 can be used as the base for the extension of Ethernet-specific information models. The specific mapping of the management-protocol-neutral model into management-protocol-specific model is the decision of the management-
34、protocol-specific solution design. For example, an object class defined in this Recommendation may be mapped into multiple tables in a SNMP MIB. Protocol-specific solutions and their mapping from the protocol-neutral model will be described in other Recommendations and is out of the scope of this Re
35、commendation. This Recommendation applies to Ethernet transport network elements and those systems in the TMN that manage such network elements. Functional capabilities of Ethernet transport equipment are defined in ITU-T G.8021, and requirements of the management of Ethernet transport equipment are
36、 provided in ITU-T G.7710 and ITU-T G.8051. The information model specified in this Recommendation applies to the EMS-NE interface, as shown in Figure 1-1, specifically for managing the Ethernet functional capabilities of the NE. Figure 1-1 Scope of ITU-T G.8052/Y.1346 interface 2 Rec. ITU-T G.8052/
37、Y.1346 (11/2016) There are several different perspectives from which management information may be defined for management purposes. The network element viewpoint is concerned with the information that is required to manage a network element. This refers to information required to manage the network
38、element function and the physical aspects of the network element. This Recommendation addresses only the network element view of Ethernet transport network management. The management-protocol-neutral information model specified in this Recommendation consists of a set of transport-technology-specifi
39、c managed object classes, i.e., Ethernet-specific managed object classes. These Ethernet-specific managed object classes are inherited from the generic managed object classes defined in other ITU-T Recommendations such as ITU-T M.3160, including managed element, termination point and its subclasses,
40、 subnetwork, and subnetwork connection1. Because of object class inheritance, the Ethernet management information model also inherits the generic object management capabilities, such as object creation/deletion, notification of object creation/deletion, attribute value retrieval/modification, notifi
41、cation of attribute/state value change, scoped and filtered retrieval of object instances, and abortion of outstanding operations. The description of these generic object management capabilities is provided in other ITU-T Recommendations, such as the ITU-T M.3700 series, and therefore is outside the
42、 scope of this Recommendation. The object classes defined in this Recommendation cover the areas of fault management, configuration management, and performance management. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text,
43、constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of t
44、he Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T G.806 Recommendation ITU-T G.806
45、 (2012), Characteristics of transport equipment Description methodology and generic functionality. ITU-T G.7710 Recommendation ITU-T G.7710/Y.1701 (2012), Common equipment management function requirements, plus Amendment 1 (2016). ITU-T G.7711 Recommendation ITU-T G.7711/Y.1702 (2016), Generic proto
46、col-neutral information model for transport resources. ITU-T G.8001 Recommendation ITU-T G.8001 (2016), Terms and definitions for Ethernet frames over transport. ITU-T G.8010 Recommendation ITU-T G.8010 (2004), Architecture of Ethernet layer networks, plus Amendment 1 (2006) and Amendment 2 (2010).
47、ITU-T G.8013 Recommendation ITU-T G.8013/Y.1731 (2015), Operations, administration and maintenance (OAM) functions and mechanisms for Ethernet-based networks. ITU-T G.8021 Recommendation ITU-T G.8021/Y.1341 (2015), Characteristics of Ethernet transport network equipment functional blocks. ITU-T G.80
48、21.1 Recommendation ITU-T G.8021.1/Y.1341.1 (2012), Types and characteristics of Ethernet transport network equipment. 1 The linkage of the Ethernet-specific object classes to the generic object classes is specified in details in Appendix I of this Recommendation. Rec. ITU-T G.8052/Y.1346 (11/2016)
49、3 ITU-T G.8031 Recommendation ITU-T G.8031 (2015), Ethernet linear protection switching. ITU-T G.8032 Recommendation ITU-T G.8032 (2015), Ethernet ring protection switching. ITU-T G.8051 Recommendation ITU-T G.8051/Y.1345 (2015), Management aspects of the Ethernet transport (ET) cable network element. ITU-T M.3100 Recommendation ITU-T M.3100 (2005), Generic network information model. ITU-T M.3160 Recommendation ITU-T M.3160 (2008), Generic, protocol-neutral management information model, p
