ITU-T Y 1401-2008 Principles of interworking (Study Group 13)《互联原则》.pdf
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1、 International Telecommunication Union ITU-T Y.1401TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2008) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Interworking Principles of interworking Recommendation ITU-T Y.14
2、01 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 protocols Y.400Y.499 Numbering,
3、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 management Y.1200Y.1299 Tran
4、sport 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 models Y.2000Y.2099 Quality of Ser
5、vice 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 Network control architectures and
6、 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. Rec. ITU-T Y.1401 (02/2008) i Recommendation ITU-T Y.1401 Principles of interworking Summary Recommendation ITU-T Y.1401 provides an architectural f
7、ramework and general principles for transport stratum interworking in a next generation network (NGN) environment. It describes client/server and peer-partition interworking. Source Recommendation ITU-T Y.1401 was approved on 29 February 2008 by ITU-T Study Group 13 (2005-2008) under Recommendation
8、ITU-T A.8 procedure. Keywords CAL, client/server, interworking, peer-partition. ii Rec. ITU-T Y.1401 (02/2008) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The
9、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 Telecommunication Standard
10、ization 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 areas of information te
11、chnology 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 operating agency. Compl
12、iance 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 “shall“ or some other obli
13、gatory 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 RIGHTS ITU draws attention to the possibility that the practice or implementati
14、on 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 development process. As of
15、 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 therefore strongly urged to
16、 consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2008 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 Y.1401 (02/2008) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 1
17、 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation. 1 4 Abbreviations and acronyms 2 5 Conventions 3 6 General aspects of interworking . 3 7 Client/server relationships (network interworking) 5 7.1 General . 5 7.2 Principles of client/server relationships 7 7.3 OAM principles of
18、 client/server relationships . 7 8 Common adaptation layer (CAL) . 7 8.1 General . 7 8.2 CAL principles . 9 8.3 CAL OAM principles. 9 9 Peer-partition interworking (service interworking) 10 9.1 General . 10 9.2 Principles of peer-partition interworking . 13 9.3 OAM principles of peer-partition inter
19、working . 13 10 Control plane interworking. 16 10.1 General . 16 10.2 Network scenarios 16 10.3 Link representation. 17 10.5 Abstract network representation. 20 10.6 Interworking with different network modes. 21 11 Security considerations. 22 Bibliography. 23 Rec. ITU-T Y.1401 (02/2008) 1 Recommenda
20、tion ITU-T Y.1401 Principles of interworking 1 Scope This Recommendation provides an architectural framework and general principles for transport stratum interworking in an NGN environment. It does not attempt to provide details for specific technology scenarios. Rather, it provides fundamental conc
21、epts and principles with illustrative examples. Specific scenarios are covered in other Recommendations. 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 public
22、ation, 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 applying the most recent edition of the Recommendations and other references listed below. A list of the
23、 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 G.805 Recommendation ITU-T G.805 (2000), Generic functional architecture of transport networks. ITU
24、-T G.809 Recommendation ITU-T G.809 (2003), Functional architecture of connectionless layer networks. ITU-T G.8080 Recommendation ITU-T G.8080/Y.1304 (2006), Architecture for the automatically switched optical network (ASON). ITU-T Y.1314 Recommendation ITU-T Y.1314 (2005), Virtual private network f
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