1、 International Telecommunication Union ITU-T G.8011.3/Y.1307.3TELECOMMUNICATION 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: GLOBAL INFORMATION INFRASTRUCTURE, IN
2、TERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Transport Ethernet virtual private LAN service Recommendation ITU-T G.8011.3/Y.1307.3 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIR
3、CUITS 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 RADIO-RELAY OR SATELLITE LI
4、NKS 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 DIGITAL LINE SYSTEM G.900G.999
5、 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.8099MPLS over Transport asp
6、ects 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.8011.3/Y.1307.3 (08/2013) i Recommendation ITU-T G.8011.3/Y.1307.3 Ethernet virtual privat
7、e LAN service Summary Recommendation ITU-T G.8011.3/Y.1307.3 defines the service attributes and parameters for carrying Ethernet characteristic information over shared bandwidth, multipoint-to-multipoint connections provided by synchronous digital hierarchy (SDH), plesiochronous digital hierarchy (P
8、DH), asynchronous transfer mode (ATM), multi-protocol label switching (MPLS), optical transport hierarchy (OTH), Ethernet MAC layer network (ETH) or Ethernet PHY layer network (ETY) server layer networks. This type of service is referred to as Ethernet virtual private LAN (EVP-LAN) service. This Rec
9、ommendation is based on the Ethernet service framework as defined in Recommendation ITU-T G.8011/Y.1307. History Edition Recommendation Approval Study Group Unique ID*1.0 ITU-T G.8011.3/Y.1307.3 2010-02-06 15 11.1002/1000/10423-en 2.0 ITU-T G.8011.3/Y.1307.3 2013-08-29 15 11.1002/1000/12026-en _ *To
10、 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. ii Rec. ITU-T G.8011.3/Y.1307.3 (08/2013) FOREWORD The International Telecommunication Union (I
11、TU) 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 organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and is
12、suing 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 topics for study by the ITU-T study groups which, in turn, produce Recommendations on these t
13、opics. 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 prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expressi
14、on “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicabilit
15、y) 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 to express requirements. The use of such words does not suggest that compliance with the Reco
16、mmendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the 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 o
17、f 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 notice of intellectual property, protected by patents, which may be required to implement this
18、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 2014 All rights reserved. No part of this publication may be reproduced, by any means whatso
19、ever, without the prior written permission of ITU. Rec. ITU-T G.8011.3/Y.1307.3 (08/2013) iii Table of Contents Page 1 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 virtual
20、private LAN (EVP-LAN) service . 5 6.1 Description . 5 6.2 Ethernet virtual private LAN (EVP-LAN) service architecture . 5 7 EVC and EC service attributes for EVP-LAN service . 12 7.1 EVC service attributes 12 7.2 EC service attributes . 13 8 UNI service Attributes for EVP-LAN service 14 9 NNI servic
21、e attributes for EVP-LAN service . 16 9.1 Internal NNI attributes 16 9.2 External NNI attributes . 16 10 Connectivity monitoring for EVP-LAN service . 17 Rec. ITU-T G.8011.3/Y.1307.3 (08/2013) 1 Recommendation ITU-T G.8011.3/Y.1307.3 Ethernet virtual private LAN service 1 Scope This Recommendation d
22、efines the service attributes and parameters for carrying Ethernet characteristic information over shared-bandwidth, multipoint-to-multipoint connections provided by SDH, ATM, MPLS, PDH, OTH, ETH or ETY server layer networks. This type of service is referred to as Ethernet Virtual private LAN (EVP-L
23、AN) service. This Recommendation is based on the Ethernet service framework as defined in ITU-T G.8011 and is aligned with the EVP-LAN services specified in MEF 6.1. This Recommendation specifies four attributes sets (EVC, EC, UNI and NNI) and values to describe an Ethernet Virtual private LAN servi
24、ce from the perspective of the network. 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
25、 other references are subject to revision; 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. Th
26、e reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T G.805 Recommendation ITU-T G.805 (2000), Generic functional architecture of transport network. ITU-T G.809 Recommendation ITU-T G.809 (2003), Functional architectur
27、e of connectionless layer networks. ITU-T G.8001 Recommendation ITU-T G.8001/Y.1354 (2013), Terms and definitions for Ethernet frames over transport. ITU-T G.8010 Recommendation ITU-T G.8010/Y.1306 (2012), Architecture of Ethernet layer networks. ITU-T G.8011 Recommendation ITU-T G.8011/Y.1307 (2012
28、), Ethernet service characteristics. ITU-T G.8012 Recommendation 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 functio
29、ns and mechanisms for Ethernet based networks. ITU-T G.8021 Recommendation ITU-T G.8021/Y.1341 (2010), Characteristics of Ethernet transport network equipment functional blocks. IEEE 802.1aq IEEE 802.1aq-2012, IEEE Standard for Local and metropolitan area networks Media Access Control (MAC) Bridges
30、and Virtual Bridged Local Area NetworksAmendment 20: Shortest Path Bridging. IEEE 802.1AX IEEE 802.1AX-2008, IEEE Standard for Local and metropolitan area networks Link Aggregation. 2 Rec. ITU-T G.8011.3/Y.1307.3 (08/2013) IEEE 802.1Q IEEE 802.1Q-2011, IEEE standard for Local and metropolitan area n
31、etworks Media Access Control (MAC) Bridges and Virtual Bridged Local Area Networks. IEEE 802.3 IEEE 802.3-2012, IEEE Standard for Ethernet. MEF 6.1 The Metro Ethernet Forum, Technical Specification MEF 6.1 (2008), Ethernet Services Definitions Phase 2. MEF 6.1.1 The Metro Ethernet Forum, Technical S
32、pecification MEF 6.1.1 (2012), Layer 2 Control Protocol Handling Amendment to MEF 6.1. MEF 10.2 The Metro Ethernet Forum, Technical Specification MEF 10.2 (2009), Ethernet Services Attributes Phase 2. MEF 26.1 The Metro Ethernet Forum, Technical Specification MEF 26.1 (2012), External Network Networ
33、k Interface (ENNI) Phase 2. MEF 30 The Metro Ethernet Forum, Technical Specification MEF 30 (2011), Service OAM Fault Management Implementation Agreement. MEF 35 The Metro Ethernet Forum, Technical Specification MEF 35 (2012), Service OAM Performance Monitoring Implementation Agreement. 3 Definition
34、s 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 customer: ITU-T G.8001. 3.1.2 ENNI: MEF 26.1. 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.8001. 3.1.6 Ethernet virtual
35、 connection (EVC): MEF 10.2. 3.1.7 flow point: ITU-T G.809. 3.1.8 link: ITU-T G.805. 3.1.9 link connection: ITU-T G.805. 3.1.10 network-to-network interface (NNI): ITU-T G.8001. 3.1.11 service frame: MEF 10.2. 3.1.12 subnetwork: ITU-T G.805. 3.1.13 traffic conditioning function: ITU-T G.8010. 3.1.14
36、 user-to-network interface (UNI): ITU-T G.8001. 3.2 Terms defined in this Recommendation None. Rec. ITU-T G.8011.3/Y.1307.3 (08/2013) 3 4 Abbreviations and acronyms This Recommendation uses the following abbreviations: APS Automatic Protection Switching ATM Asynchronous Transfer Mode CBS Committed B
37、urst Size CCM Continuity Check Message CE Customer Edge CE-VLAN Carrier Ethernet VLAN CFM Connectivity Fault Management CI Characteristic Information CIR Committed Information Rate CLPS Connectionless Packet Switched CM Colour Mode CO-CS Connection Oriented Circuit Switched CO-PS Connection Oriented
38、 Packet Switched DA Destination Address DMM Delay Measurement Message DMR Delay Measurement Reply EBS Excess Burst Size EC Ethernet Connection EFM Ethernet in the First Mile EIR Excess Information Rate E-LAN Ethernet Local Area Network E-LMI Ethernet Local Management Interface ENNI External Network
39、Network Interface ETH Ethernet MAC layer network ETH_CI Ethernet MAC Characteristic Information ETH_FF Ethernet Flow Forwarding Function ETH_FP Ethernet Flow Point ETY Ethernet PHY Layer Network EVC Ethernet Virtual Connection EVP-LAN Ethernet Virtual Private LAN FCS Frame Check Sequence FF Flow For
40、warding FP Flow Point GARP Generic Attribute Registration Protocol GVRP GARP VLAN registration protocol 4 Rec. ITU-T G.8011.3/Y.1307.3 (08/2013) ID Identification LACP Link Aggregation Control Protocol LAMP Link Aggregation Marker Protocol LC Link Connection MAC Media Access Control MEG Maintenance
41、Entity Group MEN Metro Ethernet Network MEP MEG End Point MIP MEG Intermediate Point MPLS Multi-Protocol Label Switching MSTP Multiple Spanning Tree Protocol MTU Maximum Transmission Unit MVRP Multiple VLAN Registration Protocol NNI Network-to-Network Interface OAM Operation, Administration, Mainten
42、ance OTH Optical Transport Hierarchy OTN Optical Transport Network OVC Operator Virtual Connection PDH Plesiochronous Digital Hierarchy PHY Physical layer entity RSTP Rapid Spanning Tree Protocol SDH Synchronous Digital Hierarchy SN Subnetwork STP Spanning Tree Protocol UNI User-to-Network Interface
43、 UNI-C Customer side of UNI UNI-N Network side of UNI VLAN Virtual local area network 5 Conventions The diagrammatic convention for Ethernet services described in this Recommendation is that of ITU-T G.8010. Further, the use of ETH link in this Recommendation is that of ITU-T G.8010. Specifically, E
44、TH link is a generalization that collectively refers to ETH link and ETH link connection. Rec. ITU-T G.8011.3/Y.1307.3 (08/2013) 5 6 Ethernet virtual private LAN (EVP-LAN) service 6.1 Description An EVP-LAN service is a multipoint-to-multipoint service between two or more demarcation points as illus
45、trated in Figure 6-1. The service is provided 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 EVP-LAN is Frame-based
46、characteristic information. Some subscribers commonly desire an E-LAN service type to connect their UNIs in a metro network, while at the same time accessing other services from one or more of those UNIs. An example of such a UNI is a subscriber site that wants to access a public or private IP servi
47、ce from a UNI that is also used to for E-LAN service among the subscribers several metro locations. The Ethernet virtual private LAN (EVP-LAN) service is defined in this clause to address this need. Bundling may or may not be used on the UNIs in the multipoint-to-multipoint EC. As such, CE-VLAN tag
48、preservation and tunnelling of certain Layer 2 control protocols may or may not be provided. Figure 6-1 below shows the basic structure of EVP-LAN service. G.8011.3-Y.1307.3(13)_F6-1DemarcationUNI-C UNI-CUNI-C UNI-CUNI-N UNI-NUNI-N UNI-NCustomer CustomerCustomer CustomerAccessUNI-C to UNI-CUNI-N to
49、UNI-N AccessEty-NNIEty-UNIattributesEthernet connection attributesTransport operatornetworkDemarcationEty-UNIattributesEthernet virtual connection attributesFigure 6-1 Ethernet virtual private LAN (EVP-LAN) service 6.2 Ethernet virtual private LAN (EVP-LAN) service architecture There are three types of EVP-LAN described in this clause: EVP-LAN type 1 (dedicated server layer with multiplexed access); EVP-LAN type 2 (shared server layer w
