1、 International Telecommunication Union ITU-T M.3342TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2006) SERIES M: TELECOMMUNICATION MANAGEMENT, INCLUDING TMN AND NETWORK MAINTENANCE Telecommunications management network Guidelines for the definition of SLA representation templates ITU-T Recomme
2、ndation M.3342 ITU-T M-SERIES RECOMMENDATIONS TELECOMMUNICATION MANAGEMENT, INCLUDING TMN AND NETWORK MAINTENANCE Introduction and general principles of maintenance and maintenance organization M.10M.299 International transmission systems M.300M.559 International telephone circuits M.560M.759 Common
3、 channel signalling systems M.760M.799 International telegraph systems and phototelegraph transmission M.800M.899 International leased group and supergroup links M.900M.999 International leased circuits M.1000M.1099 Mobile telecommunication systems and services M.1100M.1199 International public tele
4、phone network M.1200M.1299 International data transmission systems M.1300M.1399 Designations and information exchange M.1400M.1999 International transport network M.2000M.2999 Telecommunications management network M.3000M.3599 Integrated services digital networks M.3600M.3999 Common channel signalli
5、ng systems M.4000M.4999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. M.3342 (07/2006) i ITU-T Recommendation M.3342 Guidelines for the definition of SLA representation templates Summary This Recommendation mainly deals with SLA Representation Templates used for
6、Service Customers and Service Providers. It briefly introduces the overview and characteristics of SLA representation templates, and describes the detailed classification of SLA content, and provides the guidelines for the definition of SLA representation templates in detail, including the instructi
7、ons for completing SLA templates. In Appendix I a simple example of SLA Representation Templates and instances of them are illustrated for reference. Source ITU-T Recommendation M.3342 was approved on 14 July 2006 by ITU-T Study Group 4 (2005-2008) under the ITU-T Recommendation A.8 procedure. Keywo
8、rds Key performance indicator, KPI, key quality indicator, KQI, service level agreement, SLA, template. ii ITU-T Rec. M.3342 (07/2006) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Stand
9、ardization 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 Standardization Assembly (WTSA), wh
10、ich 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 technology which fall within
11、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. Compliance with this Recommendat
12、ion 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 obligatory language such as “mu
13、st“ 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 RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation m
14、ay 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 the date of approval of th
15、is Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent dat
16、abase. ITU 2006 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. M.3342 (07/2006) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 3.1 Definitions imported from ITU-T Rec. E.860 2 3.2 Defin
17、itions imported from ITU-T Rec. M.3208.1 2 3.3 Definitions imported from ITU-T Rec. E.419 2 3.4 Definitions imported from TMF GB917-2. 2 3.5 Definitions imported from ITU-T Rec. M.3050.1 3 3.6 Other definitions in this Recommendation. 3 4 Abbreviations and acronyms 3 5 Overview of SLA representation
18、 templates 4 5.1 Background. 4 5.2 What are SLA representation templates. 4 5.3 Characteristics of standardized SLA representation templates 5 5.4 What is GDSRT 5 6 Compositions of SLA representation templates . 5 6.1 SLA contents 5 6.2 Basic composition of SLA representation templates 6 6.3 Extende
19、d composition of SLA representation templates . 7 7 Guidelines for the definition of SLA Representation Templates . 10 7.1 SLA profile. 10 7.2 SLA Representation Templates proformas for business part. 11 7.3 SLA Representation Template proformas for service part. 16 7.4 SLA Representation Template P
20、roformas for Technology Part. 18 7.5 SLA Representation Template Proformas for QoS Report 22 Appendix I Examples of SLA Representation Templates for VLL service . 24 Appendix II Lists of QoS Parameters to be selected in a SLA. 30 II.1 A List of QoS Parameters from TMF GB917 30 II.2 A List of QoS Par
21、ameters from ITU-T Rec. E.802 31 ITU-T Rec. M.3342 (07/2006) 1 ITU-T Recommendation M.3342 Guidelines for the definition of SLA representation templates 1 Scope The emerging new service and its QoS management requirements are challenging the NGN service management, demanding extendibility and scalab
22、ility. The most important characteristic of NGN different from the current network is the QoS guarantee for services. SLAs are considered an effective way of solving the problems of QoS guarantee between Service Customers (SCs) and Service Providers (SPs). Guidelines for the Definitions of SLA Repre
23、sentation Templates (GDSRT) are the instructional explanations about service level, quality of service, priorities and duties in the SLA content. Four parts, business part, service part, technology part, and QoS report, are defined in the guidelines and the content of each part is described in detai
24、l. On the basis of the guidelines, the specific SLA representation template instances can be developed according to the specific service features. This Recommendation provides the guidelines and instructions for the definition and composition of SLA representation templates in order to manage QoS an
25、d service guarantee of telecommunication services effectively. It is the scope of this Recommendation to provide an overview of: the definition and characteristics of SLA representation templates, based on the requirements of QoS management for emerging new services; guidelines for the definition of
26、 SLA representation templates, in order to standardize the representation methods of SLAs; proformas of SLA representation templates and instructions for completing the proformas to allow defining any specific templates meeting the requirements for different services; and some SLA Representation Tem
27、plates examples. Although the guidelines for the definition are proposed in the context of NGN QoS requirements, it can be adapted to any telecommunication service and is not just limited to NGN services. It is out of the scope of this Recommendation to provide the definition and concept of each spe
28、cific Key Performance Indicator (KPI) or Key Quality Indicator (KQI); only the abstraction for how to represent QoS Parameters, KPIs and KQIs are addressed in this Recommendation. The definitions of KPIs and KQIs can be imported into SLA Representation Templates from other ITU-T Recommendations or s
29、pecifications from other organizations. By following the templates and the filling instructions provided in this Recommendation, a specific SLA can be created for a specific service. Some more detailed information can be captured from TMF GB917 Volume 2 15 and Volume 3 16, and ITU-T Rec. E.802 3. 2
30、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 revision;
31、 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 Reco
32、mmendation does not give it, as a stand-alone document, the status of a Recommendation. 2 ITU-T Rec. M.3342 (07/2006) 1 ITU-T Recommendation E.800 (1994), Terms and definitions related to quality of service and network performance including dependability. 2 ITU-T Recommendation E.801 (1996), Framewo
33、rk for Service Quality Agreement. 3 ITU-T Recommendation E.802 (Draft), Framework and methodologies for the determination and application of QoS parameters. 4 ITU-T Recommendation E.860 (2002), Framework of a service level agreement. 5 ITU-T Recommendation G.1010 (2001), End-user multimedia QoS cate
34、gories. 6 ITU-T Recommendation M.1532 (2000), Network maintenance service performance agreement (MSPA). 7 ITU-T Recommendation M.2301 (2002), Performance objectives and procedures for provisioning and maintenance of IP-based networks. 8 ITU-T Recommendation M.3010 (2000), Principles for a telecommun
35、ications management network. 9 ITU-T Recommendation M.3050.1 (2004), Enhanced Telecom Operations Map (eTOM) The business process framework. 10 ITU-T Recommendation M.3208.1 (1997), TMN management services for dedicated and reconfigurable circuits network: Leased circuit services. 11 ITU-T Recommenda
36、tion Y.1001 (2000), IP Framework A framework for convergence of telecommunications network and IP network technologies. 12 ITU-T Recommendation Y.1221 (2002), Traffic control and congestion control in IP-based networks. 13 ITU-T Recommendation Y.1540 (2002), Internet protocol data communication serv
37、ice IP packet transfer and availability performance parameters. 14 ITU-T Recommendation Y.1541 (2006), Network performance objectives for IP-based services. 15 TeleManagement Forum GB917-2 Version 2.5 (2005), SLA Management Handbook Volume 2 Concepts and Principles. 16 TeleManagement Forum GB917-3 V
38、ersion 2.1 (2005), SLA Management Handbook Volume 3 Service and Technology Examples. 3 Definitions 3.1 Definitions imported from ITU-T Rec. E.860 Service Level Agreement (SLA) 3.2 Definitions imported from ITU-T Rec. M.3208.1 Service Customer (SC) Service Provider (SP) 3.3 Definitions imported from
39、ITU-T Rec. E.419 Key Performance Indicators (KPI) 3.4 Definitions imported from TMF GB917-2 Key Quality Indicator (KQI) ITU-T Rec. M.3342 (07/2006) 3 3.5 Definitions imported from ITU-T Rec. M.3050.1 End User (EU) Enterprise Customer13.6 Other definitions in this Recommendation This Recommendation d
40、efines the following terms: 3.6.1 SLA representation templates: SLA representation templates are the canonical representation method and format of a SLA for a specific service. It is composed of several proformas to contain the SLA contents for a specific service. It provides the structures and the
41、organization method for the SLA content. When the SLA templates for a specific service are filled in with concrete information, they become a practical SLA instance. 3.6.2 guideline for the definition of SLA representation templates (GDSRT): GDSRT are the instructional explanations about how SLA con
42、tent of a specific service can be organized and represented. It provides a directive profile about the canonical definitions and expressions of generic SLA representation templates. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations: BBER Background Block Error Ratio B
43、ER Bit Error Ratio ES Error Seconds EU End User GDSRT Guidelines for the Definition of SLA Representation Templates ID Identifier IP Internet Protocol ITU-T International Telecommunication Union Telecommunication Standardization Sector KPI Key Performance Indicator KQI Key Quality Indicator MSPT Mul
44、tiplex Section Protection Termination MTBF Mean Time Between Failures MTBO Mean Time Between Outages MTPS Mean Time to Provide Service MTRS Mean Time to Restore Service MTTR Mean Time To Repair MTU Maximum Transmission Unit NGN Next Generation Network _ 1The concept of “Customer“ from ITU-T Rec. M.3
45、050.1 9 (which is originated by TMForum) and that of “Service Customer“ from ITU-T Rec. M.3208.1 10 (which is originated by ITU-T) are used as equivalent terms within this Recommendation. 4 ITU-T Rec. M.3342 (07/2006) NP Network Performance OI Outage Intensity OMG Object Management Group PM Performa
46、nce Monitoring QoS Quality of Service RFS Ready For Service RFSD Ready For Service Date SA Service Availability SDF Service Degradation Factor SLA Service Level Agreement SA Service Availability SC Service Customer SES Severely Errored Seconds SP Service Provider SUA Service UnAvailability TMF TeleM
47、anagement Forum TMN Telecommunications Management Network UAS UnAvailable Seconds VLL Virtual Leased Line 5 Overview of SLA representation templates 5.1 Background The goal of the SLA is to create a healthy relationship between the SP and the SC, and to protect the legal rights of both the SP and th
48、e SC. Because of different SPs, different services and different definitions of SLA clauses, there is no standardized SLA representation and expression during the service negotiation and QoS guarantee phase. It is necessary to define standardized and generic guidelines of SLA representation template
49、s to solve this problem. 5.2 What are SLA representation templates SLA is a long-term guarantee of SCs satisfaction. Both the SCs and the SPs interests are served by a simplified SLA negotiation and standardized contract process. SLA representation templates are the canonical representation method and format of a SLA for a specific service. It is composed of several proformas that contain the SLA content for a specific service. It provides the structures and the organiz
