1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STAN DARD IZAT ION SECTOR OF ITU G.852.3 (03199) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital transmission systems - Digital networks - Management of transport network Enterprise viewpoint for topology ma
2、nagement ITU-T Recommendation G.852.3 (Previously CCITT Recommendation) STD-ITU-T RECMN G-852-3-ENGL 3999 4862593 0660237 903 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS INTERNATIONAL ANALOGUE CARRIER SY
3、STEM GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER- TRANSMISSION SYSTEMS IN DIVI DUAL CHARACTERISTICS OF INTERNATIONAL CARRI ER TELEPHONE SYSTEMS ON METALLIC LINES GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE WITH METALLIC LINES COORDINATION OF RADIOTELEPHONY AND LINE TELEPHON
4、Y TESTING EQUIPMENTS TRANSMISSION MEDIA CHARACTERISTICS DIGITAL TRANSMISSION SYSTEMS TERMINAL EQU I PM ENTS DIGITAL NETWORKS SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION General aspects Design objectives for digital networks Quality and availability targets Network capabilities and
5、functions SDH network characteristics G.100-G.199 G.200-G.299 G.300-G.399 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.81 O-G. 81 9 G.820-G.829 G.830-G.839 G.840-G.849 11 Management of transport network G.850-G.859 SDH radio and satellite systems integration Optical t
6、ransport networks DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.860-G. 869 G. 870-G .879 G.900-G.999 _ For fi rther details, please refer to ITU-T List of Recommendations. STD.ITU-T RECMN G=52-3-ENGL 1999 48b2593i b60218 848 m ITU-T RECOMMENDATION G.852.3 ENTERPRISE VIEWPOINT FOR TOPOLOGY MANAGEMENT Su
7、mmary The topology management community is used to manage the topology of a layer network domain and the relationships between the resources of the layer network domain being managed. The service provided by the community allows for the creation and deletion of the following resources inside a layer
8、 network domain: subnetwork, link, topological link, link end, topological link end and access group. The service also provides a set of reporting actions to advise potential notification receivers of creation and deletion of resources in the community. The service is available between one single ca
9、ller and one single provider. The partitioning of subnetworks and links is not addressed in this community. Source ITU-T Recommendation G.852.3 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 6.852.3
10、 (03/99) 1 STDnITU-T RECMN G.852.3-ENGL L999 48b259L Obb0219 784 m FOREWORD ITU (International Telecommunication Union) is the United Nations 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
11、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 Conference (WTSC), which meets every four years, establishes the topics for study b
12、y the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members 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
13、standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation the term recognized operating agency (ROA) includes any individual, company, corporation or governmental organization that operates a public correspondence service. The terms Administration, ROA and public
14、correspondence are defined in the Constitution of the ZTU (Geneva, 1992). INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concern
15、ing 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, the ITU had not received notice of intellectual property, protected by
16、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. O IT 1999 All rights reserved. No part of this publication may be reproduced or
17、 utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. Recommendation G.852.3 (03/99) 11 1 2 3 4 5 6 6.1 6.2 6.3 6.4 STDmITU-T RECMN G.852.3-ENGL 1999 I 4Bb259L Obb0220 4Tb - CONTENTS Scope References Definit
18、ions Abbreviations . Conventions Community topology management Purpose . Role . Community policy Action . 6.4.1 6.4.2 6.4.3 6.4.4 6.4.5 6.4.6 6.4.7 6.4.8 6.4.9 6.4.10 6.4.11 6.4.12 6.4.13 6.4.14 6.4.15 6.4.16 6.4.17 6.4.18 6.4.19 6.4.20 6.4.21 6.4.22 6.4.23 6.4.24 Create access group . Delete access
19、 group . Create link . Delete link . Create link end Delete link end Create subnetwork . Delete subnetwork . Create topological link Delete topological link Create topological link end . Delete topological link end . Report access group creation . Report access group deletion . Report link creation
20、. Report link deletion . Report link end creation Report link end deletion Report subnetwork creation Report subnetwork deletion Report topological link deletion . Report topological link end creation . Report topological link end deletion . Report topological link creation 1 1 1 3 4 4 4 5 6 6 7 8 8
21、 9 10 10 11 12 12 12 12 13 13 13 13 14 14 14 14 Recommendation 6.852.3 (03/99) iii STDWITU-T RECMN G-852-3-ENGL 3799 9 4862571 Obh022L 332 9 Recommendation G.852.3 ENTERPRISE VIEWPOINT FOR TOPOLOGY MANAGEMENT (Geneva, 1999) 1 Scope This Recommendation specifies the enterprise viewpoint for the topol
22、ogy 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 valid. All Recommendations and
23、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 Recommendations is regularly published.
24、 11 ITU-T Recommendation G.85 1.1 (1 996), Management of the transport network - Application of the RM-ODP framework. 2 ITU-T Recommendation G.852.2 (1 999), Enterprise viewpoint description of transport network resource model. 3 Definitions None. 4 Abbreviations This Recommendation uses the followi
25、ng abbreviations: CTP Connection Termination Point Id Identifier ITU International Telecommunication Union RM-ODP topman topology management TP Termination Point TTP Trail Termination Point Reference Model for Open Distributed Processing 5 Conventions None. Recommendation 6.852.3 (03199) 1 STDaITU-T
26、 RECMN G-852-3-ENGL 1999 = Y862591 Obb0222 279 m 6 Community topology management 6.1 Purpose The purpose of this community is to manage the topology of a layer network domain and the relationships between the resources of the layer network domain being managed. The service provided by the community
27、allows for the creation and deletion of the following resources inside a layer network domain: subnetwork, link, topological link, link end, topological link end and access group. The service also provides a set of reporting actions to advise potential notification receivers of creation and deletion
28、 of resources in the community. The service is available between one single caller and one single provider. The association and disassociation of trail termination points and connection termination points with the related subnetworks and access groups are managed by other services. The partitioning
29、of subnetworks and links is not addressed in this community. 6.2 Role topman-caller This role represents the client invoking the actions defined within this community. One, and only one, topman-caller role occurrence shall exist in the community. topmanjrovider This role represents the server perfor
30、ming the actions defined in this community. One, and only one, topmanqrovider role occurrence shall 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 occurrences may exist in t
31、he community. layer network domain This role represents the layer network domain resource defined in Recommendation G.852.2. One or more role occurrences may exist in the community. subnetwork This role represents the subnetwork resource defined in Recommendation G.852.2. Zero or more subnetwork rol
32、e occurrences may exist in the community. link This role represents the link resource as defined in Recommendation G.852.2. Zero or more link role occurrences may exist in the community. topologicallink This role reflects the topological link resource as defined in Recommendation G.852.2. Zero or mo
33、re topological link role occurrences may exist in the community. link end This role represents the link end resource as defined in Recommendation G.852.2. Zero or more link end role occurrences may exist in the community. 2 Recommendation G.852.3 (03199) STD-ITU-T RECMN G-ti52.3-ENGL 1999 m 4bZ591 b
34、bZZ3 105 a31 topologicalLinkEnd This role reflects the topological link end resource as defined in Recommendation G.852.2. Zero or more topological link end role occurrences may exist in the community. access group This role represents the access group resource as defined in Recommendation G.852.2.
35、Zero or more access group role occurrences may exist in the community. trail termination point This role represents the TTP resource defined in Recommendation G.852.2. Zero or more trail termination point role occurrences may exist in the community. link connection This role represents the link conn
36、ection resource defined in Recommendation G.852.2. Zero or more link connection role occurrences may exist in the community. subnetwork connection This role represents the subnetwork connection resource defined in Recommendation G.852.2. Zero or more subnetwork connection role occurrences may exist
37、in the community. connection termination point This role represents the connection termination point resource defined in Recommendation G.852.2. Zero or more connection termination point role occurrences may exist in the community. 6.3 Community policy OBLIGATION scope Only properties that are expli
38、citly 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 outside of this community are not relevant for conformance. OBLIGATION serviceRe
39、jection In this community, the provider shall identi the obligation or prohibition which is not fulfilled either by the caller or the provider. The provider shall give an indication about any execution infrastructure problem. In this case, the level of detail indicated by the provider shall be depen
40、dent on the shared knowledge of the infrastructure on which the community is running. 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 of th
41、e 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. Recommendation G.852.3 (03199) 3 STD*ITU-T RECMN G.852-3-ENGL 1999 48b
42、259L Ob60224 041 OBLIGATION architecturalConstraints All the modifications performed on the resources in the community shall respect the architectural constraints expressed in Recommendation G.852.2. 6.4 Action 6.4.1 Create access group This action creates an access group inside a layer network doma
43、in. The caller may provide a unique user-defined identifier to identifj the access group that is to be created. The caller may also provide a user-defined label; the label need not to be unique. ACTION-POLICY PERMISSION inputUserIdentifier The caller may provide a user-defined identifier that the ca
44、ller shall use to uniquely identi the access group when it has been created. OBLIGATION successRetuniId The provider shall, upon success of this action, return the resource identifier of the created access group. OBLIGATION providerUserId If PERMISSION inputUserIdentifier is part of the contracted s
45、ervice, the provider shall use the user- defined identifier as the access group resource identifier when communicating with the caller. OBLIGATION rejectUserIdNotUnique If PERMISSION inputUserIdentifier is part of the contracted service and if the user-defined identifier is not unique within the lay
46、er network domain, the provider shall reject the action and return the not unique user identifier. PERMISSION inputDirection The caller may define constraints on the directionality of the TTPs that may be included in the requested access group. OBLIGATION giveDirection If PERMISSION inputDirection i
47、s not part of the contracted service, the provider shall not constrain the directionality. PERMISSION inputuserlabel The caller may provide a user-defined label for the requested access group. This user-defined label shall not be used by the caller to identifj the access group in an action. 6.4.2 De
48、lete access group This action deletes an access group inside a layer network domain. The access group cannot be deleted if there are any trail termination points associated with it. No other resource is deleted by this action. ACTION - POLICY OBLIGATION inputAccessGroupId The caller shall provide th
49、e identifier of the access group to be deleted. 4 Recommendation G.852.3 (03/99) STD-ITU-T RECMN G-852-3-ENGL 1999 I 48b25L Obh0225 T8 I OBLIGATION noExistingAccessGroup This action will fail if the access group specified does not exist within the layer network domain. In the case of failure, the provider shall return the identifier in error. OBLIGATION noTTP This action will fail if one or more trail termination points are still associated with the access group specified. OBLIGATION successAccessGroupDeleted When the action is successful, the provider shall indicate th
