欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ITU-T Y 1315-2006 QoS support for VPN services C Framework and characteristics《对VPN业务服务质量的支持 框架和特点 (研究组13)》.pdf

    • 资源ID:806023       资源大小:347.34KB        全文页数:28页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ITU-T Y 1315-2006 QoS support for VPN services C Framework and characteristics《对VPN业务服务质量的支持 框架和特点 (研究组13)》.pdf

    1、 International Telecommunication Union ITU-T Y.1315TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (09/2006) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Transport QoS support for VPN services Framework and characterist

    2、ics ITU-T Recommendation Y.1315 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applications and middleware Y.200Y.299 Network aspects Y.300Y.399 Interfaces and pro

    3、tocols Y.400Y.499 Numbering, addressing and naming Y.500Y.599 Operation, administration and maintenance Y.600Y.699 Security Y.700Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 Services and applications Y.1100Y.1199 Architecture, access, network capabilities and resource

    4、 management Y.1200Y.1299 Transport Y.1300Y.1399 Interworking Y.1400Y.1499 Quality of service and network performance Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.1799 Charging Y.1800Y.1899 NEXT GENERATION NETWORKS Frameworks and functional architecture model

    5、s Y.2000Y.2099 Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249 Service aspects: Interoperability of services and networks in NGN Y.2250Y.2299 Numbering, naming and addressing Y.2300Y.2399 Network management Y.2400Y.2499 Netw

    6、ork control architectures and protocols Y.2500Y.2599 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. Y.1315 (09/2006) i ITU-T Recommendation Y.1315 QoS support for VPN services Framework and characteristics Su

    7、mmary ITU-T Recommendation Y.1315 describes the characteristics and applicability of various QoS (quality of service) service scenarios in the VPN (virtual private network) environment. The QoS service scenarios cover various QoS models in single or multiple service provider configurations. The QoS

    8、models described in this Recommendation encompass the pipe model, the hose model, and a combination and/or concatenation of both. Source ITU-T Recommendation Y.1315 was approved on 13 September 2006 by ITU-T Study Group 13 (2005-2008) under the ITU-T Recommendation A.8 procedure. ii ITU-T Rec. Y.131

    9、5 (09/2006) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff qu

    10、estions and issuing 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 Recommendati

    11、ons 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 ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation

    12、, the expression “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

    13、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 “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance w

    14、ith the Recommendation 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 app

    15、licability 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 this Recommendation, ITU had received notice of intellectual property, protected by patents, which may be required to impleme

    16、nt this 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 2007 All rights reserved. No part of this publication may be reproduced, by any mean

    17、s whatsoever, without the prior written permission of ITU. ITU-T Rec. Y.1315 (09/2006) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 1 4 Abbreviations and acronyms 2 5 QoS definitions . 2 5.1 Packet-network-related QoS parameters 3 5.2 Basic QoS mechanisms 4 6 Network input and service s

    18、pecification. 4 6.1 Input traffic characteristics. 4 6.2 Service specification. 5 7 QoS architectural components 6 7.1 Data plane architectural components 6 7.2 Control plane architectural components. 7 7.3 Management plane architectural components 8 7.4 Enhancements for Y.1291 8 8 VPN service based

    19、 on the pipe model 8 8.1 Definition of pipe model 8 8.2 Customer edge characteristics 9 8.3 Provider equipment characteristics. 9 8.4 Applicability, complexity, and scalability 10 8.5 Constructing the VPN based on the pipe model. 11 9 VPN service based on the hose model 11 9.1 Definition of hose mod

    20、el 11 9.2 Customer edge characteristics 12 9.3 Provider equipment characteristics. 12 9.4 Applicability, complexity, and scalability 13 10 VPN service based on both pipe and hose model. 14 11 Multiple service provider scenario . 14 Appendix I Pipe model-based implementation example of VPN with speci

    21、fic QoS requirements . 16 I.1 Service requirements 16 I.2 Unified QoS-VPN architecture. 16 I.3 Considerations 17 Appendix II Service curve 19 Bibliography. 20 iv ITU-T Rec. Y.1315 (09/2006) Introduction There are several QoS models available for VPN services. In this Recommendation, the pipe model a

    22、nd the hose model are studied. The objectives of such studies are to provide precise definitions for these QoS models, to construct the VPN using the toolset provided in ITU-T Y.1291, and to outline applicability of these QoS models in the VPN environment. The architectural components needed to buil

    23、d these QoS models are defined in ITU-T Y.1291 while the mechanisms to coordinate the resources to ensure QoS between sites are defined in the related IETF and ITU-T documents. In order to provide VPN services with QoS, the first step is to define the QoS in parametric terms. This is construed as ob

    24、jectives of the services to be provided. The next step is to use the architecture building blocks provided in ITU-T Y.1291 to construct the VPN with QoS, and the final step is to evaluate the service performance provided by the network. This Recommendation refers to ITU-T Y.1291 on the functions and

    25、 features of the QoS architectural components. This Recommendation takes input from the various VPN related ITU-T deliverables, including approved Recommendations (e.g., ITU-T Y.1311, ITU-T Y.1311.1, ITU-T Y.1312, and ITU-T Y.1314). ITU-T Rec. Y.1315 (09/2006) 1 ITU-T Recommendation Y.1315 QoS suppo

    26、rt for VPN services Framework and characteristics 1 Scope The scope of this Recommendation is to provide guidelines on how the QoS architecture tools, mostly provided in ITU-T Y.1291, can be used to support VPN services with QoS characteristics between the network ingress points to the network egres

    27、s points. In this Recommendation, different QoS service models, including the pipe model and the hose model, are studied. The characteristics and applicability of VPN services using those QoS models and concatenation of multiple QoS models in a single or multiple provider scenarios are also studied,

    28、 including some application examples. While this Recommendation discusses the QoS issues related to VPN applications, the mechanisms to ensure QoS assurance are out of the scope of this Recommendation. 2 References The following ITU-T Recommendations and other references contain provisions which, th

    29、rough 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 possibility of applyin

    30、g 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 Recommendation. ITU-T E.

    31、800 ITU-T Recommendation E.800 (1994), Terms and definitions related to quality of service and network performance including dependability. ITU-T G.1000 ITU-T Recommendation G.1000 (2001), Communications Quality of Service: A framework and definitions. ITU-T H.360 ITU-T Recommendation H.360 (2004),

    32、An architecture for end-to-end QoS control and signalling. ITU-T Y.1291 ITU-T Recommendation Y.1291 (2004), An architectural framework for support of Quality of Service in packet networks. ITU-T Y.1311 ITU-T Recommendation Y.1311 (2002), Network-based VPNs Generic architecture and service requiremen

    33、ts. ITU-T Y.1311.1 ITU-T Recommendation Y.1311.1 (2001), Network-based IP VPN over MPLS architecture. ITU-T Y.1312 ITU-T Recommendation Y.1312 (2003), Layer 1 Virtual Private Network generic requirements and architecture elements. ITU-T Y.1314 ITU-T Recommendation Y.1314 (2005), Virtual private netw

    34、ork functional decomposition. 3 Definitions This Recommendation defines the following terms: 3.1 arrival curve: A mechanism to serve as a measure of traffic arriving at providers ingress network interface. 2 ITU-T Rec. Y.1315 (09/2006) 3.2 service curve: A mechanism to serve as a measure of the pack

    35、et forwarding services provided by the service provider. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms. BE Best Effort CE Customer Edge CoS Class of Service CR-LDP Constraint-based Routing Label Distribution Protocol Diffserv Differentiated Services D

    36、SCP DiffServ Code Point EF PHB Expedited Forwarding Per Hop Behaviour FIFO First In, First Out FILO First In, Last Out Intserv Integrated Services LAPS Link Access Procedure SDH LIFO Last In, First Out LILO Last In, Last Out LSP Label Switched Path MPLS Multi-Protocol Label Switching P Provider (nod

    37、e) PE Provider Edge QoS Quality of Service RSVP Resource reSerVation Protocol SLA Service Level Agreement TE Traffic Engineering UNI User Network Interface VF Virtual Forwarder VPN Virtual Private Network 5 QoS definitions The concept of quality of service is a multi-dimensional measure of user sati

    38、sfaction of the network. The various definitions of QoS have been discussed in different ITU-T Recommendations (e.g., ITU-T E.800 and ITU-T G.1000). Under those Recommendations, the network performance characteristics, network operability, network support, network serviceability, and network securit

    39、y are all part of the quality of service. In this Recommendation, only the parametric aspects of QoS under the VPN environment for packet-based networks are discussed. The following subclauses provide details about the QoS metrics. ITU-T Rec. Y.1315 (09/2006) 3 5.1 Packet-network-related QoS paramet

    40、ers Among various aspects of quality of service definitions, this Recommendation focuses on the performance aspects of the service providers network in the VPN environment for the packet-based networks. The measure of the QoS for a particular service providers packet network providing VPN services s

    41、hould encompass the following aspects: Delay: There are various means to measure the time delay experienced by the user traffic. It should be noted that those definitions are not equivalent (e.g., consider if the packet is fragmented inside the network or LAPS-based framing). It should be noted that

    42、 the service providers are free to use any of those definitions but a consistent definition needs to be provided to the clients if multiple service providers are involved. FIFO delay First-in, first-out: The time difference between the first bit accepted by the network and the first bit delivered to

    43、 the user across the network. LILO delay Last-in, last-out: The time difference between the last bit accepted by the network and the last bit delivered to the user across the network. FILO delay First-in, last-out: The time difference between the first bit accepted by the network and the last bit de

    44、livered to the user across the network. It is possible to define the FILO delay but should not be used because it is packet size sensitive. LIFO delay Last-in, first-out: The time difference between the last bit accepted by the network and the first bit delivered to the user across the network. It i

    45、s possible to define the LIFO delay but should not be used because it is packet size sensitive. Delay variation (jitter): Once a specific type of delay is defined by the network, the delay variation may be further divided into the following sub-categories: Maximum delay variation: The difference bet

    46、ween the maximum delay and minimum delay experienced by the user traffic within a specific time window. Mean delay variation: Within a specific time window 0,T, if each individual packet delay can be denoted as d(k) for the kth packet in the time window, the mean delay variation can then be denoted

    47、as =NiTDidD0,0)( where N denotes that there are N packets arriving in the time interval 0,T and D is the average delay endured by each packet arriving in the time window 0,T (i.e., =NkkdD0)( where N is the total number of packets arrived in the time interval 0,T). Medium delay variations: ()M : With

    48、in a specific time window 0,T, 50% of the packet have delay more than M and 50% packet will have delay less than M . Packet loss probability: The definition of packet loss probability (as opposed to the pure packet loss counts as some service providers are considering) is also subject to the time wi

    49、ndow constraint. In this Recommendation, the “packet delivery probability“ is defined as the total number of packets successfully delivered divided by the total number of the eligible packets received by the network for a given and well-defined time interval. The eligible packets are then subject to the input constraint. Hence the “packet loss probability“ is one minus the “packet delivery probability“. The particular value of delay, delay variation, and packet


    注意事项

    本文(ITU-T Y 1315-2006 QoS support for VPN services C Framework and characteristics《对VPN业务服务质量的支持 框架和特点 (研究组13)》.pdf)为本站会员(吴艺期)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开