1、 STD-ITU-T RECMN G.852-6-ENGL 1999 4862591 Obb02bb 5T0 INTERNATIONAL TELECOMMUNICATION UNION ITU-T TEL E C OM M U N I CATI ON STANDARDIZATION SECTOR OF ITU G.852.8 (03/99) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital transmission systems - Digital networks - Managem
2、ent of transport network En ter p rise vi ewpoi n t for p re- p rovs o n ed adaptation management ITU-T Recommendation G.852.8 (Previously CCITT Recommendation) ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUIT
3、S INTERNATIONAL ANALOGUE CARRIER SYSTEM TRANSMISSION SYSTEMS INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER- GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE WITH METALLIC LINES SYSTEMS ON RADIO
4、-RELAY OR SATELLITE LINKS AND INTERCONNECTION COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY TES TING EQUIPM ENTS TRANSMISSION MEDIA CHA RA CTERWTICS DIGITAL TRANSMISSION SYSTEMS TERMINAL EQUIPMENTS DIGITAL NETWORKS General aspects Design objectives for digital networks Quality and availability t
5、argets Network capabilities and 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.6004.699 G.700-G.799 G. 800-G.899 G. 80-G. 809 G.810-G.819 G.820-G.829 G.830-G.839 G. 840-G.849 Management of transport network G.85-G.859 SDH radio and satellite syste
6、ms integration Optical transport networks DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.860-G.869 G.870-G.879 G.900-G.999 For further details, please refer to ITU-T List of Recommendations. ITU-T RECOMMENDATION G.852.8 ENTERPRISE VIEWPOINT FOR PRE-PROVISIONED ADAPTATION MANAGEMENT Summary The pre-provi
7、sioned adaptation management service allows to assign a server transport entity (trail or trail termination point) to a client linking entity (topological link or topological link end). This service allows for provisionremove client transport entities (link connections or connection termination poin
8、ts) to/from server linking entities (topological link or topological link end). A notification service is also made available for any changes made as consequence of actions in this community. Source ITU-T Recommendation G.852.8 was prepared by ITU-T Study Group 4 (1997-2000) and was approved under t
9、he WTSC Resolution No. 1 procedure on the 26th of March 1999. Recommendation G.852.8 (03/99) 1 STD-ITU-T RECMN G-852.8-ENGL 2799 4862592 0660269 20T m FOREWORD IT (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunic
10、ation Standardization Sector (IT-T) is a permanent organ of the 1TU. The 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 C
11、onference (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 of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In som
12、e areas of information technology which fall within IT-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) includes any individual, company, corporation or governmental organization that op
13、erates 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 possibility that the practice or implementation of this Recommendation may involve th
14、e 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 of the Recommendation development process. As of the date of approval of this Recomm
15、endation, the ITU 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 latest information and are therefore strongly urged to consult the TSB patent database
16、. 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 from the IT. 11 Recommendation G.852.8 (03/99) - - STD=ITU-T RECMN t.852.8-ENGL 1999
17、4862593 0bb0270 T2L CONTENTS Page 4 5 6 6.1 6.2 Scope References Definitions Abbreviations . Conventions Community “pre-provisioned adaptation management“ Purpose Role . 6.2.1 Community 6.2.2 Action 1 1 1 3 3 . Recommendation G.852.8 (0399) 111 STD-ITU-T RECMN G.852.8-ENGL 48b25elL Obb02iL Yb all us
18、ers 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. i ITU-T Recommendation G.85 1.1 (1996), Managem
19、ent of the transport network - Application of the RM-0DPJi.amework. 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 following abbreviations: LC Link Connection pam pre-provi
20、sioned adaptation management SDH Synchronous Digital Hierarchy TEM Transport Enterprise Model tu tributary unit WDM Wavelength Division Multiplexing 5 Conventions None. Recommendation G.852.8 (03/99) 1 STD-ITU-T RECMN Gm852-8-ENGL 3999 9 4862593 Obh0272 BT4 D 6 Community “pre-provisioned adaptation
21、management“ 6.1 Purpose The objective of this community is to provide link capacity to client-layer(s) from a server layer. This community should be used in the case where client transport entities can be provisioned inside the link during the adaptation management. This capability of having pre-pro
22、visioned client transport entities is available in technologies such as SDH or WDM. The management of compound links and diverse routing is not addressed in this community. 6.2 Role pamcaller This role reflects the client of the actions defined within this community. One and only one caller role occ
23、urrence must exist in the community. Dam-provider This role reflects the 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 comm
24、unity. Zero or more notification receiver role occurrences may exist in the Community. client layer network domain This role reflects the layer network Domain defined in Recommendation G.852.2 that contains the client linking entities having the same signal identification. One or more occurrences ma
25、y exist in the community. server layer network domain This role reflects the layer network Domain defined in Recommendation G.852.2 that contains the serve linking entities. One and only one occurrence must exist in the community. client linking entity This role reflects either the topological link
26、resource or the topological link end resource as defined in Recommendation G.852.2. One client linking entity role occurrence per layer served by the layer of the client transport entity role occurrence may exist in the community. client transport entity This role reflects either the link connection
27、 resource or the network connection termination point resource as defined in Recommendation G.852.2. Zero or more client transport entity role occurrences may exist in the community. server transport entity This role reflects either the trail resource or the network trail termination point resource
28、as defined in Recommendation G.852.2. One or more server transport entity role occurrences may exist in the community. 2 Recommendation G.852.8 (0399) STD=ITU-T RECMN G-852-8-ENGL 1999 m 4862571 Obb0273 730 = 6.2.1 Community OBLIGATION resourceconsistency This community applies for both arc-oriented
29、 view and point-oriented view. Roles client linking entity, client transport entity and server transport entity can be played by either an arc-oriented resource or a point-oriented resource, but consistently: those three roles can be played either by arc-oriented resources or by point-oriented resou
30、rces, but not by a mixture of arc-oriented and point-oriented resources. 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 o
31、f this service. Any other modifications outside of this community is not relevant for conformance. OBLIGATION serviceRejection In this community, a provider shall identi the obligation or prohibition which is not fulfilled either by the caller or the provider. The provider shall give an indication a
32、bout any execution infrastructure problem. In this case, the level of detail indicated by the provider shall be dependent on shared the knowledge of the infrastructure on which the community is running. If the rejection is due to incorrect caller behaviour or information, the provider has to give it
33、 back enough indication to allow for correction. OBLIGATION viewinglapabilities The provider shall support such viewing of the resource properties and relationships that have been identified or permitted in the service contract with the caller. OBLIGATION belongingconstraints All resources managed i
34、n the community actions shall belong to the community. OBLIGATION consistentClientAndServerSignalId The signal identification of the resources playing the roles client linking entity and client transport entity should correspond to a layer which is client of the layer characterized by the signal ide
35、ntification of the resources playing the role server transport entity. OBLIGATION architecturalConstraints All the modifications performed on the resources in this community are done in respect with the architectural constraints expressed in Recommendation G.852.2 (TEM). 6.2.2 Action 6.2.2.1 This ac
36、tion is used to assign a server transport entity to a client linking entity. Those two entities are provided by the caller. The provider shall report the potential number of client transport entities of the client linking entity in case of success. Assign server transport entity to client linking en
37、tity Recommendation 6.852.8 (03/99) 3 STD-ITU-T RECMN G.852-8-ENGL 1999 m 48b2591 Ob60274 677 / server layer / TRAIL Example of a trail serving 2 links in two different client layers TO410670-98 ACTION-POLICY OBLIGATION inputClientLinkingEntityId The caller shall provide the identifier of the client
38、 linking entity that must not be already associated to a server transport entity. OB LI GAT1 ON input S erverTransportEnt i t y Id The caller shall provide the identifier of the server transport entity. PERMIS SION returnClientTransportEntities The provider may return the identifiers of the client t
39、ransport entities that are already supported by the server transport entity. This is to cover the case where the adaptation is fixed and all the client transport entities have been already provisioned during the creation of the server transport entity. OBLIGATION successReturnUnprovisionedCapacity I
40、n case of a successful action, the provider shall return to the caller the number of unprovisioned client transport entities of the client linking entity. 6.2.2.2 This action is used to deassign the transport entity from a client linking entity. The client linking entity is identified by the caller.
41、 The provider shall reject the request if some capacity is still provided by the transport entity to the client linking entity. ACTION-POLICY OBLIGATION inputClientLinkingEntityId The caller shall provide the identifier of the client linking entity. OBLIGATION inputServerTransportEntity Id The calle
42、r shall provide the identifier of the server transport entity. OBLIGATION noProvidedCapacity The provider shall reject the request if the server transport entity is still providing capacity to the client linking entity. OBLIGATION successReturn In case of a successful action, the provider shall indi
43、cate to the caller that the action was successful. Deassign server transport entity from client linking entity I 4 Recommendation G.852.8 (03/99) STD*lTU-T RECMN G-BS2.B-ENGL 1999 W 48b2591 Obb0275 503 9 6.2.2.3 This action is used to provision a capacity in terms of a number of client transport ent
44、ities from the server transport entity to a client linking entity. In case of a successful action, the capacity requested by the caller is provisioned and added to the previous provisioned number of client transport entities of the client linking entity and the provisioned client transport entities
45、are returned. The caller has the ability to specify the channels (timeslots for SDH) of the client transport entities that shall be provisioned. The provider shall not satis the request if the requested capacity is larger than the potential capacity of the client linking entity and it has the respon
46、sibility to manage the remaining number of client transport entities so that the whole capacity is made available to all the client linking entities. Provision capacity to client linking entity I I I Provisioned capacity: 2 Tu3 LC Provisioned capacity: 21 TU12 LC I v . I , ,/ client layer VC3 . ! cl
47、ient layer VC12 N, I . / , . / server layer: VC4 , / , . * Example of a server trail providing 21 Tu12 and 2 Tu3 to two different links TO4106B0-9B ACTIONPOLICY OBLIGATION inputClientLinkingEntityId The caller shall provide the identifier of the client linking entity. PERMIS SION selectClientTranspo
48、rtEntities The caller may provide the channels (timeslots for SDH) of the client transport entities that shall be provisioned. OBLIGATION providerClientTransportEntities If PERMISSION selectClientTransportEntities is part of the contracted service, then the provider shall provision the client transp
49、ort entities specified by the caller. OBLIGATION correctchannels If PERMISSION selectClientTransportEntities is part of the contracted service and if the channels specified are not correct (e.g. already provisioned or not allowed according to the concerned technology), then the provider shall reject the action. OBLIGATION inputRequestedCapacity If PERMISSION selectClientTransportEntities is not part of the service contract, the caller shall provide the requested number of client transport entities. OBLIGATION consistency The provider shall reject the re
