1、 International Telecommunication Union ITU-T E.417TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2005) SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS Network management International network management Framework for the network management of IP-based
2、 networks ITU-T Recommendation E.417 ITU-T E-SERIES RECOMMENDATIONS OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS INTERNATIONAL OPERATION Definitions E.100E.103 General provisions concerning Administrations E.104E.119 General provisions concerning users E.120E.139
3、 Operation of international telephone services E.140E.159 Numbering plan of the international telephone service E.160E.169 International routing plan E.170E.179 Tones in national signalling systems E.180E.189 Numbering plan of the international telephone service E.190E.199 Maritime mobile service an
4、d public land mobile service E.200E.229 OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE Charging in the international telephone service E.230E.249 Measuring and recording call durations for accounting purposes E.260E.269 UTILIZATION OF THE INTERNATIO
5、NAL TELEPHONE NETWORK FOR NON-TELEPHONY APPLICATIONS General E.300E.319 Phototelegraphy E.320E.329 ISDN PROVISIONS CONCERNING USERS E.330E.349 INTERNATIONAL ROUTING PLAN E.350E.399 NETWORK MANAGEMENT International service statistics E.400E.404 International network management E.405E.419 Checking the
6、 quality of the international telephone service E.420E.489 TRAFFIC ENGINEERING Measurement and recording of traffic E.490E.505 Forecasting of traffic E.506E.509 Determination of the number of circuits in manual operation E.510E.519 Determination of the number of circuits in automatic and semi-automa
7、tic operation E.520E.539 Grade of service E.540E.599 Definitions E.600E.649 Traffic engineering for IP-networks E.650E.699 ISDN traffic engineering E.700E.749 Mobile network traffic engineering E.750E.799 QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING
8、Terms and definitions related to the quality of telecommunication services E.800E.809 Models for telecommunication services E.810E.844 Objectives for quality of service and related concepts of telecommunication services E.845E.859 Use of quality of service objectives for planning of telecommunicatio
9、n networks E.860E.879 Field data collection and evaluation on the performance of equipment, networks and services E.880E.899 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. E.417 (02/2005) i ITU-T Recommendation E.417 Framework for the network management of IP-base
10、d networks Summary This Recommendation lays down a framework for supporting and defining the role of network management in IP-based telecommunications networks. IP-based networks generally make use of various telecommunications technologies that support a range of multimedia services such as voice,
11、data, still image and video. Such IP-based networks are referred to here as converged networks. Network Management (NM) goals, principles and functions that are intended for use with IP-based equipment are defined. The major part of this Recommendation suggests ways to monitor traffic and provides s
12、ome indication of parameters for promptly detecting abnormal network traffic conditions. After detection of an abnormal condition, automatic and possibly manual controls must be temporarily applied to the network to alleviate the problem until it is resolved. It is also necessary to frequently check
13、 the performance of the network after applying the NM controls to note whether the control is mitigating the problem and to determine when to modify or remove it from the network. Source ITU-T Recommendation E.417 was approved on 24 February 2005 by ITU-T Study Group 2 (2005-2008) under the Resoluti
14、on 1. History 1.0 E.417 2001-02-02 2.0 E.417 2005-02-24 ii ITU-T Rec. E.417 (02/2005) 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
15、 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), which meets every four years, establishes the topic
16、s 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 ITU-Ts purview, the necessary standards are prepa
17、red 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 Recommendation is voluntary. However, the Recommendation may
18、 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 “must“ and the negative equivalents are used to expr
19、ess 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 may involve the use of a claimed Intellectual Prop
20、erty 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 this Recommendation, ITU had not received notice of
21、 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 database. ITU 2005 All rights reserved. No part of t
22、his publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. E.417 (02/2005) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 2 4 Abbreviations 3 5 Introduction 4 6 Network management goals, concerns and policies. 4 6.1 Network manageme
23、nt goals . 5 6.2 Network management concerns . 6 6.3 Network management policies . 7 7 Network management functions. 8 8 Network status and performance data. 9 8.1 Network status of IP-based traffic 9 8.2 Measurements. 9 8.3 Alarms and notifications. 11 9 Network management controls. 11 9.1 Informat
24、ion-transfer-based controls . 12 9.2 Routing-based controls. 12 9.3 Address-based controls. 12 9.4 Flow admission control 12 9.5 Other NM controls 13 ITU-T Rec. E.417 (02/2005) 1 ITU-T Recommendation E.417 Framework for the network management of IP-based networks 1 Scope This Recommendation is inten
25、ded to support and define the role of network management in IP-based telecommunications networks. IP-based networks generally make use of various telecommunications technologies that support a range of multimedia services such as voice, data, still image and video. In this Recommendation, such IP-ba
26、sed networks are referred to as converged networks. Addressed here are the Network Management (NM) goals, principles and functions intended for use with IP-based equipment operating in such converged networks or in dedicated IP networks. This Recommendation lays down a framework for IP network manag
27、ement. It shall, however, be enhanced as the research in the field of IP network management is progressed. The major part of this Recommendation suggests ways to monitor traffic and provides some indication of parameters for promptly detecting abnormal network traffic conditions. After detection of
28、an abnormal condition, automatic and possibly manual controls must be temporarily applied to the network to alleviate the problem until it is resolved. It is also necessary to frequently check the effects of the NM controls to note whether the control is mitigating the problem and to determine when
29、to modify or remove it from 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 an
30、d 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. T
31、he reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation ITU-T Recommendation E.370 (2001), Service principles when public circuit-switched international telecommunication networks interwork with IP-based networks. ITU-T Recomm
32、endation E.410 (1998), International network management General information. ITU-T Recommendation E.411 (2000), International network management Operational guidance. ITU-T Recommendation E.412 (2003), Network management controls. ITU-T Recommendation E.413 (1988), International network management P
33、lanning. ITU-T Recommendation E.414 (1988), International network management Organization. ITU-T Recommendation E.415 (1991), International network management guidance for common channel signalling system No. 7. ITU-T Recommendation E.416 (2000), Network management principles and functions for B-ISD
34、N traffic. ITU-T Recommendation E.800 (1994), Terms and definitions related to quality of service and network performance including dependability. ITU-T Recommendation H.245 (2005), Control protocol for multimedia communication. 2 ITU-T Rec. E.417 (02/2005) ITU-T Recommendation H.323 (2003), Packet-
35、based multimedia communications systems. ITU-T Recommendation I.371 (2004), Traffic control and congestion control in B-ISDN. ITU-T Recommendation M.3000 (2000), Overview of TMN Recommendations. ITU-T Recommendation Y.1540 (2002), Internet protocol data communication service IP packet transfer and a
36、vailability performance parameters. In addition, other standards bodies such as the Internet Engineering Task Force (IETF) have been working in related areas such as IP Quality of Service. These include the following: IETF RFC 2330 (1998), Framework for IP Performance Metrics. IETF RFC 2386 (1998),
37、A Framework for QoS-based Routing in the Internet. 3 Definitions This Recommendation defines the following terms: 3.1 call: An association between two or more users or between a user and a network entity within a telecommunications network for the purpose of exchanging information. The call begins w
38、ith the call set-up procedure and ends with the call termination procedure. 3.2 class of service: Any of the network-oriented designations or features that can distinguish between various services, or application-layer uses, of lower-layer telecommunications capabilities for the purpose of more effe
39、ctively accommodating the specialized network performance needs of specific services. 3.3 connection-oriented: Connection-oriented refers to the transfer of information between two entities by first establishing a path (or connection) for the information transfer. The communication proceeds through
40、three well-defined phases: connection establishment, information transfer, and connection release. The most common example of connection-oriented information transfer is a telephone call over a circuit-switched network. Other examples of connection-oriented information exchange are networks based on
41、 ITU-T Rec. X.25, Frame Relay (FR), Transmission Control Protocol (TCP) and Asynchronous Transfer Mode (ATM). 3.4 connectionless: Connectionless refers to the transfer of information between two entities without first establishing a path (or connection) for the information transfer. Examples of conn
42、ectionless transport include the Internet Protocol (IP) and User Datagram Protocol (UDP). 3.5 converged network: IP-based networks that generally make use of various telecommunications technologies to support a range of multimedia services such as voice, data, still image and video. 3.6 gateway: A n
43、etwork element that enables real-time communication between other network elements and/or customer premises equipments (CPE) that have dissimilar protocols. This includes supporting voice communication between terminals on a packet network, e.g., IP network, and terminals on a circuit-switched netwo
44、rk. 3.7 link: A point-to-point (physical or virtual) connection used for transporting information between two nodes. A link could, for example, be a leased line, or it could be implemented as a logical connection over an Ethernet, a frame relay network, an ATM network, or any other network technolog
45、y that functions below the network layer of the Open Systems Interconnection (OSI) model. 3.8 multimedia service: A telecommunications service that supports the simultaneous use of multiple media types (e.g., voice, data, video). ITU-T Rec. E.417 (02/2005) 3 3.9 network performance: The performance
46、of a portion of a telecommunications network that is measured between a pair of network-user or network-network interfaces using objectively defined and observed performance parameters. 3.10 quality of service (QoS): QoS is defined in ITU-T Rec. E.800 as “collective effect of service performance, wh
47、ich determine the degree of satisfaction of a user of the service“. 3.11 router: In the broadest sense, any communications equipment that forwards information on a connectionless basis. Typically, routers are special purpose computers, which operate at Layer 3 of the OSI reference model and forward
48、information based on a Layer 3 address which has network-wide significance. For example, Internet routers forward IP packets based on their destination addresses. Routers operate without using connections, as opposed to switches which do establish connections. 3.12 switch: A switch is a device that
49、dynamically interconnects physical or virtual links to form a connection for information transfer. 3.13 virtual connection: A type of connection used for packet data transfer in which apparent connections are established through appropriate correlation of link-layer addresses. 4 Abbreviations This Recommendation uses the following abbreviations: APS Automatic Protection Switching ATM Asynchronous Transfer Mode B-ISDN Broadband Integrated Services Digital Network CPE Customer Premises Equipment FR Frame Relay IETF
