ITU-T G 8051-2018 Management aspects of the Ethernet transport (ET) capable network element (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.8051/Y.1345 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2018) 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 Management aspects of the Ethernet transport (ET) capable network element Recommendation ITU-T G.8051/Y.1345 ITU-T G-SERIES RECOMMENDATIONS TRANSMIS

3、SION 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 METALLIC LINES G.300G.399 G

4、ENERAL 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 DIGITAL TERMINAL EQUIP

5、MENTS 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.7000G.7999 PACKET OVER TR

6、ANSPORT 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 the list of ITU-T Recomm

7、endations. Rec. ITU-T G.8051/Y.1345 (03/2018) i Recommendation ITU-T G.8051/Y.1345 Management aspects of the Ethernet transport (ET) capable network element Summary Recommendation ITU-T G.8051/Y.1345 addresses management aspects of the Ethernet transport (ET) capable network element containing trans

8、port functions of one or more of the layer networks of the Ethernet transport network. The management of the Ethernet layer networks is separable from that of its client layer networks so that the same means of management can be used regardless of the client. The management functions for fault manag

9、ement, configuration management, performance monitoring and security management are specified. The 2009 revision of this Recommendation added the management of additional transport functions that were introduced in the 2009 revision of Recommendation ITU-T G.8021/Y.1341. The 2013 revision of this Re

10、commendation added the management of additional functions, including: client signal fail (CSF); proactive loss measurement using loss measurement message (LMM)/loss measurement reply (LMR); proactive delay measurement using delay measurement message (DMM)/delay measurement reply (DMR) and one-way de

11、lay measurement (1DM); synthetic loss measurement using synthetic loss message (SLM)/synthetic loss reply (SLR) and one-way synthetic loss measurement (1SL) (proactive and on-demand); performance management (PM) requirements on protocol data unit (PDU) generation type, message period, measurement in

12、terval, repetition period, start time, stop time and session duration; and PM data collection requirements. The 2015 revision of this Recommendation updated the management information (MI) signals for the ETHx_FT function in clause 8.5, the MI signals for the ETHx/MCC function in clause 8.6, the one

13、-way synthetic loss measurement (1SL) management information (MI) signal for the ETHDe_FT_Sk function in clause 8.8 and the on-demand and proactive loss measurement requirements in clause 10.2. The 2018 revision of this Recommendation has updated the fault cause persistency function at the ETH conne

14、ction (ETH-C) function for ring protection, the configuration management for protection switching and connection functions. Finally, in alignment with Recommendation ITU-T G.8021/Y.1341, this revision has removed both fault management functions and the management information (MI) signals that are re

15、lated to ETYn_TT, ODUkP-X-L/MT_A and ETYn/ETH_A. This revision has also removed the MI signals to activate processes in adaptation functions (i.e., MI_Active). History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.8051/Y.1345 2007-10-22 15 11.1002/1000/9186 2.0 ITU-T G.8051/Y.13

16、45 2009-11-13 15 11.1002/1000/10430 2.1 ITU-T G.8051/Y.1345 (2009) Amd. 1 2011-06-06 15 11.1002/1000/11139 3.0 ITU-T G.8051/Y.1345 2013-08-29 15 11.1002/1000/12024 3.1 ITU-T G.8051/Y.1345 (2013) Amd. 1 2014-05-14 15 11.1002/1000/12186 4.0 ITU-T G.8051/Y.1345 2015-08-13 15 11.1002/1000/12549 4.1 ITU-

17、T G.8051/Y.1345 (2015) Amd. 1 2017-08-13 15 11.1002/1000/13314 5.0 ITU-T G.8051/Y.1345 2018-03-16 15 11.1002/1000/13546 Keywords Carrier Ethernet, network management, transport resource. _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, fo

18、llowed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.8051/Y.1345 (03/2018) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication

19、technologies (ICTs). 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 T

20、elecommunication 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 som

21、e areas of information 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 recognize

22、d operating agency. 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

23、 “shall“ or some 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 th

24、e practice or implementation 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

25、development process. 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 t

26、herefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2018 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.8051/Y.1345 (03/2018) iii Table of Contents Page

27、 1 Scope . 1 2 References . 2 3 Definitions 3 3.1 Terms defined elsewhere 3 3.2 Terms defined in this Recommendation . 4 4 Abbreviations and acronyms 4 5 Conventions 7 6 ET management architecture 7 6.1 ET network management architecture 7 6.2 ET equipment management function architecture 10 6.3 Inf

28、ormation flows over management points . 11 7 Fault (maintenance) management . 12 7.1 Fault management applications 12 7.2 Fault management functions . 14 8 Configuration management 22 8.1 Hardware 22 8.2 Software 22 8.3 Protection switching . 23 8.4 Trail termination . 23 8.5 Flow termination 23 8.6

29、 Adaptation 28 8.7 Connection 37 8.8 Diagnostic . 38 8.9 Traffic conditioning and shaping 41 8.10 XXX_Reported . 41 8.11 Alarm severity 42 8.12 Alarm reporting control (ARC) 42 8.13 PM thresholds . 42 8.14 TCM activations . 42 8.15 Date and time 42 9 Accounting management 43 10 Performance managemen

30、t 43 10.1 Performance management applications 43 10.2 Performance monitoring functions . 43 11 Security management 53 iv Rec. ITU-T G.8051/Y.1345 (03/2018) Page Appendix I MI signals/parameters for PM tools in ITU-T G.8021 54 Rec. ITU-T G.8051/Y.1345 (03/2018) 1 Recommendation ITU-T G.8051/Y.1345 Ma

31、nagement aspects of the Ethernet transport (ET) capable network element 1 Scope This Recommendation addresses management aspects of the Ethernet transport (ET) capable network element containing transport functions of one or more of the layer networks of the Ethernet transport network. The managemen

32、t of the Ethernet layer networks is separable from that of its client layer networks so that the same means of management can be used regardless of the client. In this version of this Recommendation, fault management, configuration management, performance management (PM) and security management are

33、specified. Accounting management is for further study. Furthermore, only the management information (MI) of the following ET equipment functions is addressed: Ethernet MAC layer (ETH) flow forwarding, flow termination, connection, diagnostic and traffic conditioning/shaping functions; ETH server to

34、ETH client adaptation functions (including ETH/ETH-m and ETHG/ETH); ETH link aggregation functions; GFP-F-based mapping of Ethernet into SDH; GFP-T-based mapping of Gigabit Ethernet code words into VC-4-Xv; PDH server to ETH client adaptation functions; and OTN server to ETH client adaptation functi

35、ons. The management of the adaptation of other clients and servers with respect to ET is for further study. This Recommendation also describes the management network organizational model for communication between an element management layer (EML) operations system and the ET equipment management fun

36、ction (EMF) within an ET network element. The architecture described in this Recommendation for the management of Ethernet transport networks is based upon the following considerations: the management view of network element functional elements should be uniform whether those elements form part of a

37、n inter-domain interface or part of an intra-domain interface. Those properties necessary to form such a uniform management view are to be included in this Recommendation; Ethernet layer network entities (ELNEs) refer to trail termination, adaptation and connection functions as described in ITU-T G.

38、8010; a network element may only contain Ethernet layer network entities (ELNEs); a network element may contain both Ethernet layer network entities (ELNEs) and client layer network entities (CLNEs); client layer entities are managed as part of their own logical domain; CLNEs and ELNEs may or may no

39、t share a common message communication function (MCF) and management application function (MAF) depending on application; and CLNEs and ELNEs may or may not share the same agent, server layer network entities (SLNEs) and ELNEs may or may not share the same agent. 2 Rec. ITU-T G.8051/Y.1345 (03/2018)

40、 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revisi

41、on; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent 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 R

42、ecommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T G.707 Recommendation ITU-T G.707/Y.1322 (2007), Network node interface for the synchronous digital hierarchy (SDH). ITU-T G.709 Recommendation ITU-T G.709/Y.1331 (2016), Interfaces for the optical transp

43、ort network. ITU-T G.805 Recommendation ITU-T G.805 (2000), Generic functional architecture of transport networks. ITU-T G.806 Recommendation ITU-T G.806 (2012), Characteristics of transport equipment Description methodology and generic functionality. ITU-T G.832 Recommendation ITU-T G.832 (1998), T

44、ransport of SDH elements on PDH networks Frame and multiplexing structures. ITU-T G.7041 Recommendation ITU-T G.7041/Y.1303 (2016), Generic framing procedure. ITU-T G.7710 Recommendation ITU-T G.7710/Y.1701 (2012), Common equipment management function requirements. ITU-T G.7712 Recommendation ITU-T

45、G.7712/Y.1703 (2010), Architecture and specification of data communication network. ITU-T G.8010 Recommendation ITU-T G.8010/Y.1306 (2004), Architecture of Ethernet layer networks. ITU-T G.8012 Recommendation ITU-T G.8012/Y.1308 (2004), Ethernet UNI and Ethernet NNI. ITU-T G.8013 Recommendation ITU-

46、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 (2018), Characteristics of Ethernet transport network equipment functional blocks. ITU-T M.20 Recommendation ITU-T M.20 (1992

47、), Maintenance philosophy for telecommunication networks. ITU-T M.3010 Recommendation ITU-T M.3010 (2000), Principles for a telecommunications management network. ITU-T M.3013 Recommendation ITU-T M.3013 (2000), Considerations for a telecommunications management network. ITU-T M.3100 Recommendation

48、ITU-T M.3100 (2005), Generic network information model. ITU-T X.700 Recommendation ITU-T X.700 (1992), Management framework for Open Systems Interconnection (OSI) for CCITT applications. ITU-T X.701 Recommendation ITU-T X.701 (1997) | ISO/IEC 10040:1998, Information technology Open Systems Interconn

49、ection Systems management overview. Rec. ITU-T G.8051/Y.1345 (03/2018) 3 ITU-T X.733 Recommendation ITU-T X.733 (1992) | ISO/IEC 10164-4:1992, Information technology Open Systems Interconnection Systems Management: Alarm reporting function. ITU-T X.735 Recommendation ITU-T X.735 (1992) | ISO/IEC 10164-6:1993, Information technology Open Systems Interconnection Systems Management: Log control function. ITU-T Y.1563 Recommendatio