1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.852.12 (03/99) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital transmission systems - Digital networks - Management of transport network Enterprise viewpoint for pre-provision
2、ed link management ITU-T Recommendation G.852.12 (Previously CCITT Recommendation) ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G. I OO-G .I 99 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHON
3、E G ,300-G . 399 SYSTEMS ON METALLIC LINES II GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE WITH METALLIC LINES SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY TES TING EQUIPMEN TS TRANSMISSION M DIA CHARACTERISTICS DIG1 TA
4、L TRANSMISSION SYSTEMS TERMINAL EQUI PMENTS DIGITAL NETWORKS General aspects Design objectives for digital networks Quality and availability targets Network capabilities and functions SDH network characteristics G.400-G.449 G.450-G.499 G.600-G.699 G.700-G.799 G.800-G.899 G. 800-G. 809 G.810-G.819 G.
5、820-G.829 G.830-G.839 G.84-G. 849 11 Management of transport network G.85-.859 SDH radio and satellite systems integration Optical transport networks DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.860-G.869 G. 870-G. 879 G.900-G.999 I For further details, please refer to iTU-T List of Recommendations. S
6、ummary The pre-provisioned link management service provides functionality to addremove transport entities (link connections or connection termination points) to/fiom client linking entities (links/link ends). The client linking entities have to be created using the topology management community (see
7、 G.85x.3 series of Recommendations). The transport entities that could be potentially added to the client linking entity have to be provided using either the pre-provisioned adaptation management (see G.85x.8 series of Recommendations) within topological linking entities or the link management withi
8、n client linking entities. Source ITU-T Recommendation G.852.12 was prepared by ITU-T Study Group 4 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on the 26th of March 1999. Recommendation G.852.12 (03/99) 1 FOREWORD ITU (International Telecommunication Union) is the United N
9、ations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing tel
10、ecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members
11、of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation the term recognized operating agency (ROA
12、) includes any individual, company, corporation or governmental organization that operates a public correspondence service. The terms Administration, ROA and public correspondence are defined in the Constitution of the ITU (Geneva, 1992). INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the p
13、ossibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside
14、of the Recommendation development process. As of the date of approval of this Recommendation, the IT 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 lat
15、est information and are therefore strongly urged to consult the TSB patent database. O ITU 1999 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing fr
16、om the ITU. 11 Recommendation G.852.12 (03199) CONTENTS Page 1 2 3 4 5 6 6.1 6.2 6.3 6.4 Scope References Definitions Abbreviations . Conventions Community pre-provisioned link management Purpose . Role . Community policy Add transport entities to client linking entity Remove transport entities from
17、 client linking entity . Report client linking entity capacity change . Action . 6.4.1 6.4.2 6.4.3 i 1 1 1 . Recommendation G.852.12 (03/99) 111 Recommendation G.852.12 ENTERPRISE VIEWPOINT FOR PRE-PROVISIONED LINK MANAGEMENT (Geneva, 1999) 1 Scope This Recommendation specifies the enterprise viewpo
18、int for the pre-provisioned link management of a transport 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 va
19、lid. All Recommendations and other references are subject to revision; all 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 Recornmend
20、ations is regularly published. i ITU-T Recommendation G.85 1.1 (1 996), Management of the transport network - Application of the RM-ODPJYamework. 2 ITU-T Recommendation G.852.2 (1 999), Enterprise viewpoint description of transport network resource model. 3 Definitions None. 4 Abbreviations This Rec
21、ommendation uses the following abbreviations: CTP Connection Termination Point Id Identifier plm pre-provisioned link management SDH Synchronous Digital Hierarchy WDM Wavelength Division Multiplexing 5 Conventions None. Recommendation 6.852.12 (03/99) 1 6 Community pre-provisioned link management 6.
22、1 Purpose The purpose of this community is to allow a caller: O to add link connections to a link or remove link connections from a link and to update the to add CTPs to a link end or remove CTPs from a link end and to update the capacity of the capacity of the link in the arc view (see Figure 1); o
23、r link end in the point view. e This community should be used in the case where capacity has already been provisioned using the trail management and adaptation management communities. This capability of having pre-provisioned link connections is available in technologies such as SDH or WDM. client l
24、inking entity e.g. link -1 provider linking transport entity - entity e.g. link e.g. link connection link management community , transport entity e.g. link connection provider linking entity I I 1 trail TO410220-98 transportentity , e.g. link connection trail adaptation function Figure UG.852.12 - P
25、ossible functionalities of the link management community (arc view) 2 Recommendation G.852.12 (03/99) 6.2 Role plm-caller This role reflects the client of the actions defined within this community. One and only one caller role occurrence must exist in the community. plmjrovider This role reflects th
26、e server of the actions defined within this community. One and only one provider role occurrence must exist in the community. notification receiver This role represents a receiver of the reporting actions defined within this community. Zero or more notification receiver role occurrence may exist in
27、the community. layer network domain This role represents the layer network domain resource defined in Recommendation G.852.2. One and only one role occurrences must exist in the community. client linking entity This role reflects the link resource or the link end resource as defined in Recommendatio
28、n G.852.2 to/from which the transport entities could be addedremoved. One or more linking entity role occurrences may exist in the Community. provider linking entity This role reflects the topological link or link resource, or the topological link end or link end resource as defined in Recommendatio
29、n G.852.2. Zero or more topological linking entity or linking entity role occurrences may exist in the community. - transport entity This role reflects the link connection resource or the connection termination point resource as defined in Recommendation G.852.2 which could be addedremoved tofiom th
30、e client linking entity. One or more transport entity role occurrences may exist in the community. 6.3 Community policy OBLIGATION resourceconsistency This community applies for both arc-oriented view and point-oriented view. The roles linking entity and transport entity can be played by either arc-
31、oriented resources or point-oriented resources, but consistently: those two roles can be played either by arc-oriented resources or by point-oriented resources, but not by a mixture of arc-oriented and point-oriented resources. In an arc-oriented view the point oriented resources may only exist at t
32、he boundary of a subnetwork. OBLIGATION scope Only properties that are explicitly stated in this community are valid and can be accessed by both caller and provider of this community. Conformance to this service depends only on the explicit specification of this service. Any other modifications outs
33、ide of this community are not relevant for conformance. OBLIGATION ServiceRejection In case of service rejection, the provider shall identifj the obligation or prohibition which is not fulfilled either by the caller or the provider. The provider shall give an indication about any Recommendation 6.85
34、2.12 (03/99) 3 STD-ITU-T RECMN G-852-12-ENGL 1999 48b2591 ObbOSLb 714 execution infrastructure problem. In this case, the level of detail indicated by the provider shall be dependent on the shared knowledge of the infiastructure on which the community is running. For the case where any wrong paramet
35、ers have been passed to the provider, the return exception shall indicate these parameters. OBLIGATION signalId Each resource in the community shall have the same signal identification. The community constitutes a layer network domain. OBLIGATION viewinglapabilities The provider shall support a view
36、 of the resource properties and relationships that have been identified or permitted in the service contract with the caller. OBLIGATION belongingConstraints All resources managed in the community actions shall belong to the community. OBLIGATION architecturalConstraintc All the modifications perfor
37、med on the resources in the community shall respect the architectural constraints expressed in Recommendation G.852.2. OBLIGATION topologicalLinkingEntity The actions of this community shall not modify a topological linking entity. 6.4 Action 6.4.1 This action is used to add one or more transport en
38、tities to a client linking entity. Add transport entities to client linking entity - ACTION-POLICY OBLIGATION supplyClientLinkingEntityId The caller shall uniquely identi a client linking entity which will contain the added transport entities. OBLIGATION noExistingClientLinkingEntity This action wil
39、l fail if the supplied client linking entity does not exist within the layer network domain. In the case of failure, the provider shall return the identifier in error. OBLIGATION supplyProviderLinkingEntityId The caller shall uniquely identie a provider linking entity which has to contain the transp
40、ort entities that shall be added. OBLIGATION noExistingProviderLinkingEntity This action will fail if the supplied provider linking entity does not exist within the layer network domain. In the case of failure, the provider shall return the identifier in error. PERMISSION identieTransportEntities Th
41、e caller may uniquely identicries K ieries L ;cries M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Y Series Z ITU-T RECOMMENDATIONS SERIES Organization of the work of the ITU-T Means of expression: definitions, symbols, classification General telec
42、ommunication statistics General tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia systems Integrated services digital net
43、work Transmission of television, sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant TMN and network maintenance: international transmission systems, telephone circuits telegraphy, facsim
44、ile and leased circuits Maintenance: international sound programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Telegraph transmission Telegraph services terminal equip
45、ment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communications Global information infrastructure and Internet protocol aspects Languages and general software aspects for telecommunication systems Printed in Switzerland Geneva, 1999
