ITU-T G 8051 AMD 1-2017 Management aspects of the Ethernet transport (ET) capable network element Amendment 1 (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 Amendment 1 (08/2017) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Packet over Transport aspects Ethernet over Transport aspects SERIES

2、 Y: GLOBAL INFORMATION 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 Amendment 1 Recommendation ITU-T G.8051/Y.1345 (2015) Amendmen

3、t 1 ITU-T 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 TELEP

4、HONE SYSTEMS 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 CHARAC

5、TERISTICS 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

6、GENERIC ASPECTS G.7000G.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 detail

7、s, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.8051/Y.1345 (2015)/Amd.1 (08/2017) i Recommendation ITU-T G.8051/Y.1345 Management aspects of the Ethernet transport (ET) capable network element Amendment 1 Summary Recommendation ITU-T G.8051/Y.1345 addresses management aspects of

8、the Ethernet transport network element containing transport 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

9、of the client. The management functions for fault management, 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 Recommen

10、dation ITU-T G.8021/Y.1341. The 2013 revision of this Recommendation 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 me

11、ssage (DMM)/delay measurement reply (DMR) and one-way delay 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 un

12、it (PDU) generation type, message period, measurement interval, repetition period, start time, stop time and session duration; and PM data collection requirements. The 2015 Revision of this Recommendation has updated the management information (MI) signals for the ETHx_FT function in clause 8.5, the

13、 MI signals for the ETHx/MCC function in clause 8.6, the one-way synthetic loss measurement (1SL) 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. Amendment 1 provides: Addition of fFOP-PM and fFOP-TO for ETH_C_MI in

14、clause 7 Deletion of the description related to ODUkP-X-L/MT_A in clauses 7, 8 and 10, due to the deletion of LCAS-capable ODUk to ETH Adaptation function in Recommendation ITU-T G.8021 Update of the text in clause 8.3, “Protection switching“ Update of RAPS (Recommendation ITU-T G.8032) related MIs

15、for ETH-C in Table 8-4 Addition of the definitions for Traffic condition and shaping functions in clause 3 Update of some references in clause 2 ii Rec. ITU-T G.8051/Y.1345 (2015)/Amd.1 (08/2017) History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.8051/Y.1345 2007-10-22 15 11.

16、1002/1000/9186 2.0 ITU-T G.8051/Y.1345 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-

17、08-13 15 11.1002/1000/12549 4.1 ITU-T G.8051/Y.1345 (2015) Amd. 1 2017-08-13 15 11.1002/1000/13314 Keywords Carrier Ethernet, transport resource. _ * 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.

18、For example, http:/handle.itu.int/11.1002/1000/11830-en. Rec. ITU-T G.8051/Y.1345 (2015)/Amd.1 (08/2017) iii FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The IT

19、U 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 Telecommunication Standardiz

20、ation 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 information tech

21、nology 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 agency. Complia

22、nce 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 some other obli

23、gatory 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 implementatio

24、n 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 process. As of

25、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 strongly urged to

26、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. iv Rec. ITU-T G.8051/Y.1345 (2015)/Amd.1 (08/2017) Table of Contents Page 1 Scope . 1 2

27、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 Information flows

28、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 . 22 8.4 Trail termination . 23 8.5 Flow termination 23 8.6 Adaptation 28

29、8.7 Connection 38 8.8 Diagnostic . 39 8.9 Traffic conditioning and shaping 42 8.10 XXX_Reported . 43 8.11 Alarm severity 43 8.12 Alarm reporting control 43 8.13 PM thresholds . 44 8.14 TCM activations . 44 8.15 Date and time 44 9 Accounting management 45 10 Performance management 45 10.1 Performance

30、 management applications 45 10.2 Performance monitoring functions . 45 11 Security management 54 Appendix I MI signals/parameters for PM tools in ITU-T G.8021 55 Rec. ITU-T G.8051/Y.1345 (2015)/Amd.1 (08/2017) 1 Recommendation ITU-T G.8051/Y.1345 Management aspects of the Ethernet transport (ET) cap

31、able network element Amendment 1 Editorial note: This is a complete-text publication. Modifications introduced by this amendment are shown in revision marks relative to Recommendation ITU-T G.8051/Y.1345 (2015). 1 Scope This Recommendation addresses management aspects of the Ethernet transport (ET)

32、capable network element containing transport 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.

33、In this version of this Recommendation, fault management, configuration management, performance management (PM), and security management are specified. Accounting management is for further study. Furthermore, only the management information (MI) of the following ET equipment functions is addressed:

34、Ethernet MAC layer (ETH) flow forwarding, flow termination, connection, diagnostic, and traffic conditioning/shaping functions; ETH server to ETH client adaptation functions (including ETH/ETH-m and ETHG/ETH); ETH link aggregation functions; Ethernet PHY layer (ETYn) trail termination functions; ETY

35、n server to ETH client adaptation 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 functions. The management of the adaptation of other clients

36、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 function (EMF) within an ET network element. The architect

37、ure 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 these elements form part of an inter-domain interface or part of an intra-domain int

38、erface. The 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.8010; a network element may only contain Ethernet layer n

39、etwork entities; a network element may contain both ELNEs and client layer network entities (CLNEs); client layer entities are managed as part of their own logical domain; 2 Rec. ITU-T G.8051/Y.1345 (2015)/Amd.1 (08/2017) CLNEs and ELNEs may or may not share a common message communication function (

40、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 References The following ITU-T Recommendations and other references contain provisi

41、ons 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 revision; users of this Recommendation are therefore encouraged to investigate the possibili

42、ty 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 Recommendation does not give it, as a stand-alone document, the status of a Recommendat

43、ion. 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 (20162), Interfaces for the optical transport network, plus Amendment 1 (20122016) and Corrigendum 1 (2017). ITU-T G.805 Recomm

44、endation 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, plus Corrigendum 1 (2012), Corrigendum 2 (2016) and Corrigendum 3 (2017). ITU-T

45、 G.832 Recommendation ITU-T G.832 (1998), Transport of SDH elements on PDH networks Frame and multiplexing structures. ITU-T G.7041 Recommendation ITU-T G.7041/Y.1303 (20161), Generic framing procedure. ITU-T G.7710 Recommendation ITU-T G.7710/Y.1701 (2012), Common equipment management function requ

46、irements, plus, Amendment 1(2016). ITU-T G.7712 Recommendation ITU-T G.7712/Y.1703 (2010), Architecture and specification of data communication network, plus Amendment 1(2013) and Amendment 2 (2016). ITU-T G.8001 Recommendation ITU-T G.8001/Y.1354 (2013), Terms and definitions for Ethernet frames ov

47、er transport. 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 plus Amendment 1 (2006) and Amendment 2 (2016). ITU-T G.8013 Recommendation ITU-T G.8013/Y.1731 (201120

48、15), OAM functions and mechanisms for Ethernet- based networks. ITU-T G.8021 Recommendation ITU-T G.8021/Y.1341 (20122016), Characteristics of Ethernet transport network equipment functional blocks. ITU-T M.20 Recommendation ITU-T M.20 (1992), Maintenance philosophy for telecommunication networks. I

49、TU-T M.3010 Recommendation ITU-T M.3010 (2000), Principles for a telecommunications management network. Rec. ITU-T G.8051/Y.1345 (2015)/Amd.1 (08/2017) 3 ITU-T M.3013 Recommendation ITU-T M.3013 (2000), Considerations for a telecommunications management network. ITU-T M.3100 Recommendation ITU-T M.3100 (2005), Generic network information model. ITU-T X.700 Recommendation ITU-T X.700 (1992), Management framework for Open Systems