ITU-T G 7711-2016 Generic protocol-neutral information model for transport resources (Study Group 15).pdf

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.7711/Y.1702 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (12/2016) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Data over Transport Generic aspects Transport network control aspects SERIES Y:

2、GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Internet protocol aspects Operation, administration and maintenance Generic protocol-neutral information model for transport resources Recommendation ITU-T G.7711/Y.1702 ITU-T

3、G-SERIES RECOMMENDATIONS 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 SYSTE

4、MS ON METALLIC 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

5、G.600G.699 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 AS

6、PECTS G.7000G.7999 General G.7000G.7099 Transport network control aspects G.7700G.7799 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.7711/Y.1702 (12/2016) i Recommendation ITU-T G.7711/Y.17

7、02 Generic protocol-neutral information model for transport resources Summary Recommendation ITU-T G.7711/Y.1702 specifies a core information model (IM) of transport resources. The IM is applicable to the management and control of transport networks regardless of whether they utilize traditional ope

8、ration support system (OSS) management, an automatically switched optical network (ASON) control plane or a software-defined networking (SDN) controller to configure transport connectivity. The model is also applicable regardless of the technology of the underlying transport network. Furthermore, th

9、e applicability of the IM is independent of the ultimate protocols that will be used in the management and control interfaces. The 2016 edition of this Recommendation has changed the document structure, added an experimental address structure to the foundation model, changed the name of TopologicalE

10、ntity to ForwardingEntity, incorporated ForwardingConstruct (FC) under ForwardingEntity and considers FC as closely related to topology, added the resilience model, added the equipment model and added the Specification model. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G

11、.7711/Y.1702 2015-08-13 15 11.1002/1000/12567 2.0 ITU-T G.7711/Y.1702 2016-12-22 15 11.1002/1000/13092 Keywords 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 R

12、ecommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.7711/Y.1702 (12/2016) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (I

13、CTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ 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 Telecommunicatio

14、n Standardization Assembly (WTSA), which meets every four years, establishes the 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 info

15、rmation technology which fall within ITU-Ts purview, the necessary standards are 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 age

16、ncy. Compliance with this Recommendation is voluntary. However, the Recommendation 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 som

17、e other obligatory language such as “must“ and the negative equivalents are used 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 i

18、mplementation of this Recommendation may involve the use of a claimed Intellectual 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 pro

19、cess. As of the date of approval of this Recommendation, ITU had not received notice 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 strong

20、ly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 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.7711/Y.1702 (12/2016) iii Table of Contents Page 1 Scope . 1 2

21、References . 2 3 Definitions 3 3.1 Terms defined elsewhere 3 3.2 Terms defined in this Recommendation . 3 4 Abbreviations and acronyms 3 5 Conventions 5 5.1 UML modelling conventions 5 5.2 Model artefact lifecycle stereotype conventions 6 5.3 Forwarding entity terminology conventions 7 5.4 Condition

22、al package conventions . 7 5.5 Pictorial diagram conventions 7 6 Model overview 8 6.1 Development and use of the ITU-T G.7711/Y.1702 Generic Information Model 9 6.2 Core Network Model Forwarding and Termination Model 12 6.3 Core Foundation Model 13 6.4 Core Network Model Topology Model . 13 6.5 Core

23、 Network Model Resilience Model 15 6.6 Core Physical Model 15 6.7 Core Specification Model . 16 7 Other aspects . 17 7.1 Key reference materials 17 7.2 Data dictionary . 17 7.3 Terminology mapping 18 7.4 Core Model enhancement . 18 7.5 Future Core Model work areas . 18 8 UML model Papyrus files . 21

24、 Annex A Modelling principles and guidelines, and tooling . 22 A.1 UML modelling guidelines . 22 A.2 Papyrus and Github guidelines . 22 Annex B Forwarding and Termination model 23 B.1 Forwarding and Termination Model detail . 23 B.2 Explanatory figures 32 B.3 Work in progress 48 Annex C Foundation I

25、dentifiers, naming and states 49 C.1 Naming and identifiers . 49 C.2 States . 58 iv Rec. ITU-T G.7711/Y.1702 (12/2016) Page Annex D Topology model. 61 D.1 Topology model 61 D.2 Explanatory figures 75 Annex E Resilience Model . 91 E.1 Resilience model detail . 91 E.2 Explanatory figures 103 E.3 Prote

26、ction of other functions of physical things . 122 E.4 Work in progress related to resilience 122 Annex F Physical model . 130 F.1 Physical model detail 130 F.2 Work in progress related to the physical model . 151 Annex G Specification model . 155 G.1 Purpose of the specification model . 155 G.2 Dedi

27、cated specification structures 159 Appendix I Mapping of ITU-T G.7711/Y.1702 to ONF technical reports . 198 Appendix II Data dictionary . 199 Appendix III Terminology mapping . 200 III.1 Terminology mapping table . 200 III.2 Detailed view of transport application programming interface to core model

28、mapping . 205 III.3 Model evolution 206 Appendix IV Core model enhancement 207 IV.1 Controller model . 207 IV.2 State extensions 207 IV.3 Model structure rules 208 IV.4 Strict Composition 211 IV.5 Multiplicity restrictions 212 IV.6 Synchronization management model sketch 213 Bibliography. 222 Rec. I

29、TU-T G.7711/Y.1702 (12/2016) 1 Recommendation ITU-T G.7711/Y.1702 Generic protocol-neutral information model for transport resources 1 Scope This Recommendation describes a core information model (IM) of transport resources. An IM describes the things in a domain in terms of objects, their propertie

30、s (represented as attributes) and their relationships. This IM is intended to be applicable to the management and control of the transport network regardless of whether the transport networks utilize traditional operation support system (OSS) management ITU-T G.7710, an automatically switched optica

31、l network (ASON) control plane ITU-T G.8080 or a software-defined networking (SDN) controller to configure transport connectivity. The model is also applicable regardless of the technology of the underlying transport network. Furthermore, the applicability of the IM is independent of the ultimate pr

32、otocols that will be used in the management and control interfaces. The core IM defined in this Recommendation can be used as a basis for the extension of transport/control-technology-specific IMs. Such extension will be specified in technology-specific Recommendations, such as those shown in Figure

33、 1-1: ITU-T G.874.1 for optical transport network (OTN) management; ITU-T G.8052 for Carrier Ethernet management; ITU-T G.8152 for multiprotocol label switching-transport profile (MPLS-TP) management; and ITU-T G.7718.1 for ASON control management. Figure 1-1 Example information model extension A un

34、iform management/control-protocol-neutral core IM for traditional management, ASON control, and SDN control will ensure consistent operation, administration, maintenance and provisioning (OAM users of this Recommendation are therefore encouraged to investigate the possibility of applying the most re

35、cent edition of the 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.781 Recommend

36、ation ITU-T G.781 (2008), Synchronization layer functions. ITU-T G.798 Recommendation ITU-T G.798 (2012), Characteristics of optical transport network hierarchy equipment functional blocks. ITU-T G.800 Recommendation ITU-T G.800 (2016), Unified functional architecture of transport networks. ITU-T G.

37、805 Recommendation ITU-T G.805 (2000), Generic functional architecture of transport networks. ITU-T G.808.1 Recommendation ITU-T G.808.1 (2014), Generic protection switching Linear trail and subnetwork protection. ITU-T G.874.1 Recommendation ITU-T G.874.1 (2016), Optical transport network: Protocol

38、-neutral management information model for the network element view. ITU-T G.7710 Recommendation ITU-T G.7710/Y.1701 (2012), Common equipment management function requirements. ITU-T G.7718.1 Recommendation ITU-T G.7718.1/Y.1709.1 (2006), Protocol-neutral management information model for the control p

39、lane view. ITU-T G.8021 Recommendation ITU-T G.8021/Y.1341 (2016), Characteristics of Ethernet transport network equipment functional blocks. ITU-T G.8032 Recommendation ITU-T G.8032/Y.1344 (2015), Ethernet ring protection switching. ITU-T G.8080 Recommendation ITU-T G.8080/Y.1304 (2012), Architectu

40、re for the automatically switched optical network. ITU-T G.8081 Recommendation ITU-T G.8081/Y.1353 (2012), Terms and definitions for automatically switched optical networks. ITU-T G.8052 Recommendation ITU-T G.8052/Y.1346 (2016), Protocol-neutral management information model for the Ethernet Transpo

41、rt capable network element. ITU-T G.8152 Recommendation ITU-T G.8152/Y.1375 (2016), Protocol-neutral management information model for the MPLS-TP network element. ITU-T X.731 Recommendation ITU-T X.731 (1992), Information technology Open Systems Interconnection Systems management: State management f

42、unction. ITU-T X.1036 Recommendation ITU-T X.1036 (2007), Framework for creation, storage, distribution and enforcement of policies for network security. ISO/IEC 19505-1 ISO/IEC 19505-1:2012, Information technology Object Management Group Unified Modelling Language (OMG UML) Part 1: Infrastructure.

43、Rec. ITU-T G.7711/Y.1702 (12/2016) 3 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 access point ITU-T G.805 3.1.2 connection point ITU-T G.805 3.1.3 connection termination point ITU-T G.8081 3.1.4 information model ITU-T X.1036 3.1.5

44、link ITU-T G.805 3.1.6 link connection ITU-T G.805 3.1.7 matrix ITU-T G.805 3.1.8 port ITU-T G.805 3.1.9 subnetwork ITU-T G.805 3.1.10 subnetwork connection ITU-T G.805 3.1.11 termination connection point ITU-T G.8081 3.1.12 trail termination ITU-T G.805 3.1.13 trail termination point ITU-T G.8081 3

45、.2 Terms defined in this Recommendation None. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: AP Access Point API Application Programming Interface ASON Automatically Switched Optical Network BMCA Best Master Clock Algorithm C while a user group respon

46、sible for inventory may only be allowed read access (i.e., can see the network, but cannot make changes). Pruning, i.e., remove the objects/packages/attributes that are not required: Select the required object classes from the common IM All mandatory (non-optional) attributes and packages must be in

47、cluded Select the required conditional packages and optional attributes Where appropriate conditional packages and optional attributes may be declared mandatory Rec. ITU-T G.7711/Y.1702 (12/2016) 11 Remove any optional associations that are not required Refactoring, i.e., reduce association flexibil

48、ity: Reducing multiplicity (e.g., from 1* to 1) When this results in a composition association of multiplicity 1 between a subordinate and a superior object class, they can be combined into a single object class by pulling the attributes of the subordinate class into the superior class Where possibl

49、e reducing the depth of the inheritance (i.e., by combining object classes by moving the attributes of the super class into the subclass) Add reverse navigation (if useful for the client) The common IM only supports navigation from a subordinate object class to a superior object class. This allows new subordinate object classes to be added without any impact on the superior object cl