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.8011.5/Y.1307.5 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (08/2013) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Packet over Transport aspects Ethernet over Transport aspects SERIES Y: GLOB
2、AL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Transport Ethernet private LAN service Recommendation ITU-T G.8011.5/Y.1307.5 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELE
3、PHONE 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 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RA
4、DIO-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 EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGIT
5、AL 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 TRANSPORT ASPECTS G.8000G.8999 Ethernet over Transport aspects G.8000G.80
6、99 MPLS over Transport aspects G.8100G.8199 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 Recommendations. Rec. ITU-T G.8011.5/Y.1307.5 (08/2013) i Recommendation ITU-T G.8011.5/Y.1307
7、.5 Ethernet private LAN service Summary Recommendation ITU-T G.8011.5/Y.1307.5 defines the service attributes and parameters for carrying Ethernet private LAN characteristic information over dedicated-bandwidth, point-to-point connections provided by synchronous digital hierarchy (SDH), asynchronous
8、 transfer mode (ATM), multi-protocol label switching (MPLS), plesiochronous digital hierarchy (PDH), Ethernet PHY layer network (ETY) optical transport hierarchy (OTH), Ethernet MAC layer network (ETH) or other server layer networks. History Edition Recommendation Approval Study Group Unique ID* 1.0
9、 ITU-T G.8011.5/Y.1307.5 2010-02-06 15 11.1002/1000/10427 2.0 ITU-T G.8011.5/Y.1307.5 2013-08-29 15 11.1002/1000/12028 Keywords Ethernet private LAN service, service attribute. _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by
10、the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.8011.5/Y.1307.5 (08/2013) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication techno
11、logies (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 Telecom
12、munication 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 area
13、s 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 recognized oper
14、ating 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 “shal
15、l“ 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 the prac
16、tice 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 develo
17、pment 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 therefo
18、re strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2014 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.8011.5/Y.1307.5 (08/2013) iii Table of Contents Page 1
19、 Scope . 1 2 References . 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 3 5 Conventions 4 6 Ethernet private LAN . 4 6.1 Description . 4 6.2 EPLAN service architecture . 6 7 EPLAN Ethernet virtual connection (EVC) and Ethern
20、et connection (EC) attributes . 11 7.1 EVC 11 7.2 EC . 11 8 EPLAN UNI attributes . 12 9 EPLAN NNI and OVC service attributes . 13 9.1 Internal NNI attributes 13 9.2 External NNI attributes . 13 10 Connectivity monitoring . 14 10.1 EC connectivity monitoring . 14 10.2 UNI connectivity monitoring . 20
21、 Rec. ITU-T G.8011.5/Y.1307.5 (08/2013) 1 Recommendation ITU-T G.8011.5/Y.1307.5 Ethernet private LAN service 1 Scope This Recommendation defines the service attributes and parameters for carrying Ethernet characteristic information over dedicated-bandwidth, point-to-point connections provided by SD
22、H, ATM, MPLS, PDH, ETY, OTH, ETH or other server layer networks. This type of service is referred to as Ethernet private LAN (EPLAN) service. This Recommendation is based on the Ethernet service framework as defined in ITU-T G.8011. 2 References The following ITU-T Recommendations and other referenc
23、es 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 revision; users of this Recommendation are therefore encouraged to investi
24、gate 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 Recommendation does not give it, as a stand-alone document, the statu
25、s of a Recommendation. ITU-T G.707 Recommendation ITU-T G.707/Y.1322 (2003), Network node interface for the synchronous digital hierarchy (SDH). ITU-T G.709 Recommendation ITU-T G.709/Y.1331 (2001), Interfaces for the optical transport network. ITU-T G.805 Recommendation ITU-T G.805 (2000), Generic
26、functional architecture of transport networks. ITU-T G.809 Recommendation ITU-T G.809 (2003), Functional architecture of connectionless layer networks. ITU-T G.7043 Recommendation ITU-T G.7043/Y.1343 (2004), Virtual concatenation of plesiochronous digital hierarchy (PDH) signals. ITU-T G.8001 Recomm
27、endation ITU-T G.8001/Y.1354 (2008), Terms and definitions for Ethernet frames over transport. ITU-T G.8010 Recommendation ITU-T G.8010/Y.1306 (2004), Architecture of Ethernet layer networks. ITU-T G.8011 Recommendation ITU-T G.8011/Y.1307 (2009), Ethernet service characteristics. ITU-T G.8012 Recom
28、mendation ITU-T G.8012/Y.1308 (2004), Ethernet UNI and Ethernet NNI. ITU-T G.8012.1 Recommendation ITU-T G.8012.1/Y.1308.1 (2012), Interfaces for the Ethernet transport network. ITU-T G.8013 Recommendation ITU-T G.8013/Y.1731 (2013), OAM functions and mechanisms for Ethernet based networks. ITU-T G.
29、8021 Recommendation ITU-T G.8021/Y.1341 (2012), Characteristics of Ethernet transport network equipment functional blocks. ITU-T G.8021.1 Recommendation ITU-T G.8021.1/Y.1341.1 (2012), Types and characteristics of Ethernet transport network equipment. 2 Rec. ITU-T G.8011.5/Y.1307.5 (08/2013) IEEE 80
30、2.1Q IEEE 802.1Q-2011, IEEE Standard for Local and metropolitan area networks Media Access Control (MAC) Bridges and Virtual Bridged Local Area Networks. IEEE 802.1AX IEEE 802.1AX-2008, IEEE Standard for Local and metropolitan area networks Link Aggregation. IEEE 802.3 IEEE 802.3-2012, IEEE Standard
31、 for Ethernet. MEF 6.1 MEF 6.1 (2008), Ethernet Services Definitions Phase 2. MEF 6.1.1 MEF 6.1.1 (2012), Layer 2 Control Protocol Handling Amendment to MEF 6.1. MEF 10.2 MEF 10.2 (2009), Ethernet Services Attributes Phase 2. MEF 26.1 MEF 26.1 (2012), External Network Network Interface (ENNI) Phase
32、2. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 access link: ITU-T G.8001. 3.1.2 customer: ITU-T G.8001. 3.1.3 ETH link: See clause 6.6 of ITU-T G.8010. 3.1.4 Ethernet connection (EC): ITU-T G.8001. 3.1.5 Ethernet service: ITU-T G.80
33、01. 3.1.6 Ethernet service area: ITU-T G.8001. 3.1.7 Ethernet service instance: ITU-T G.8001. 3.1.8 Ethernet virtual connection (EVC): ITU-T G.8010. 3.1.9 ENNI: MEF 26.1. 3.1.10 flow domain fragment: ITU-T G.8010. 3.1.11 flow point: ITU-T G.809. 3.1.12 flow termination: ITU-T G.809. 3.1.13 link: ITU
34、-T G.805. 3.1.14 link connection: ITU-T G.805. 3.1.15 network-to-network interface (NNI): ITU-T G.8001. 3.1.16 operator virtual connection (OVC): MEF 26.1. 3.1.17 service frame: ITU-T G.8010. 3.1.18 subnetwork: ITU-T G.8010. 3.1.19 termination flow point: ITU-T G.809. 3.1.20 traffic conditioning fun
35、ction: ITU-T G.8010. 3.1.21 user-to-network interface (UNI): ITU-T G.8001. 3.2 Terms defined in this Recommendation None. Rec. ITU-T G.8011.5/Y.1307.5 (08/2013) 3 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: ATM Asynchronous Transfer Mode ATM VC Asy
36、nchronous Transfer Mode Virtual Circuit CBR Constant Bit Rate CBS Committed Burst Size CF Coupling Flag CI Characteristic Information CIR Committed Information Rate CM Colour Mode CO-PS Connection Oriented Packet Switched (service) EC Ethernet Connection EFM Ethernet in the First Mile EIR Excess Inf
37、ormation Rate E-LMI Ethernet Local Management Interface EPLAN Ethernet Private Local Area Network ETH Ethernet MAC layer network ETH_CI Ethernet MAC Characteristic Information ETH_FF Ethernet Flow Forwarding function ETY Ethernet physical layer network ETYn Ethernet physical layer network of order n
38、 ETy-NNI Ethernet NNI Ety-UNI Ethernet UNI EVC Ethernet virtual connection FD Flow Domain FDFr Flow Domain Fragment LACP Link Aggregation Control Protocol LAG Link Aggregation LCAS Link Capacity Adjustment Scheme MAC Media Access Control MEG Maintenance Entity Group MEN Metro Ethernet Network MEP ME
39、G End Point MIP MEG Intermediate Point MPLS Multi-Protocol Label Switching MPLS LSP Multi-Protocol Label Switching Label Switched Path MTU Maximum Transmission Unit 4 Rec. ITU-T G.8011.5/Y.1307.5 (08/2013) NNI Network to Network Interface OAM Operations, Administration, Maintenance OTH Optical Trans
40、port Hierarchy OTN Optical Transport Network OTN ODU Optical Transport Network Optical channel Data Unit OVC Operator Virtual Connection PDH Plesiochronous Digital Hierarchy PHY Physical device SDH Synchronous Digital Hierarchy SDH VC Synchronous Digital Hierarchy Virtual Circuit STP Spanning Tree P
41、rotocol UNI User to Network Interface UNI-C Customer side of UNI UNI-N Network side of UNI 5 Conventions None. 6 Ethernet private LAN 6.1 Description An EPLAN service is a multipoint-to-multipoint service between two or more demarcation points, as illustrated in Figures 6-1 and 6-2. The service is p
42、rovided over connection-oriented server layer networks with a committed information rate (CIR). Note that if a CO-PS server layer is used, traffic management is required to ensure that the CIR is maintained. The level of transparency of an EPLAN is frame-based characteristic information. Rec. ITU-T
43、G.8011.5/Y.1307.5 (08/2013) 5 6.1.1 Single domain G . 80 1 1. 5- Y . 13 07 . 5( 13 )_ F 6- 1U N I-C U N I-CU N I-C U N I-CU N I-N U N I-NU N I-N U N I-NCu s t om e r Cu s t om e rCu s t om e r Cu s t om e rA c c e s sU N I-C t o U N I-CU N I-N t o U N I-N A c c e s sE t y-N N IE t y-U N Ia t t ri bu
44、t e s E t he rne t c onn e c t i on a t t ri but e sT r an s p or t op e r at orn e t w or kE t he rne t vi rt ua l c onn e c t i on a t t ri but e sD e m a rc a t i on D e m a rc a t i onFigure 6-1 Ethernet private LAN service (single domain) Figure 6-1 describes the abstract model of the EPLAN ser
45、vice for the case in which service traffic is carried on a single server subnetwork. In this case, from the service providers viewpoint, ETH UNI-Ns are placed facing users at the domain edge in order to provide users access to the service. As for the EPLAN, a UNI-N provides dedicated access for user
46、 traffic. In the transport operator network, a virtual multipoint-to-multipoint (MP2MP) Ethernet virtual connection and an UNI-N to UNI-N Ethernet connection are emulated by the transport network connections. EPLAN UNI-Ns are responsible for forwarding and mapping the EPLAN service traffic based on
47、the destination MAC address. UNI-Ns are also responsible for rate control to ensure the QoS of the EPLAN service. 6 Rec. ITU-T G.8011.5/Y.1307.5 (08/2013) 6.1.2 Multiple domains G . 80 1 1. 5- Y . 13 07 . 5( 13 )_ F 6- 2D e m a rc a t i onU N I-CU N I-CU N I-CU N I-CU N I-NU N I-NU N I-NU N I-NA c c
48、 e s s A c c e s sNNIE t y-U N Ia t t ri but e sE C s e gm e ntTr an s p or t op e r ato rn e tw or kTr an s p or t op e r ato rn e tw or kD e m a rc a t i onU N I-CU N I-CU N I-CU N I-CU N I-NU N I-NU N I-NU N I-NCu s t om e rCu s t om e rCu s t om e rCu s t om e rNNITr an s p or t op e r ato rn e
49、tw or kTr an s p or t op e r ato rn e tw or kE t he rne t vi rt ua l c onn e c t i on a t t ri but e sNNI NNIE -N N Ia t t ri but e sO pe ra t or v i rt ua l c onn e c t i on O pe ra t or v i rt ua l c onn e c t i onE C s e gm e ntE C s e gm e ntU N I-C t o U N I-CU N I-N t o U N I-NE t y-U N Ia t t ri but e sE t he rne t c onn e c t i on a t t ri but e sFigure 6-2 Ethernet private LAN service (multiple domains) Figure 6-2 describes the
