1、 - - - STDSITU-T RECMN G-852.6-ENGL 1999 4862593 Obb023b 8b3 m INTERNATIONAL TELECOMMUNICATION UNION ITUWT TELECOMMUNICATION STAN DARD IZAT ION SECTOR OF ITU G.852.6 (03199) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital transmission systems - Digital networks - Manag
2、ement of transport network Enterprise viewpoint for trail management ITU-T Recommendation G.852.6 (Previously CCITT Recommendation) STD.ITU-T RECMN G-852-b-ENGL 1999 m 4b2593 Obb0237 7TT ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHO
3、NE CONNECTIONS AND CIRCUITS G. I OO-G.199 INTERNATIONAL ANALOGUE CARRIER SYSTEM TRANSMISSION SYSTEMS GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER- G.200-G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G. 300-G. 399 GENERAL CHARACTERISTICS OF IN
4、TERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION G.400-G.449 WITH METALLIC LINES COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY TES TING EQUIPMEN TS TRANSMISSION MEDIA CHARACTERISTICS DIGITAL TRANSMISSION SYSTEMS TERMINAL EQUIPMENTS DIGITAL NETWORKS G.45
5、0-G.499 G.600-G.699 G.700-G.799 G.800-G.899 General aspects G.800-G.809 Design objectives for digital networks G .8 1 O-G. 8 I 9 Quality and availability targets G. 820-G. 829 Network capabilities and functions G.830-G.839 SDH network characteristics G. 840-6.849 Management of transport network G.85
6、0-G.859 SDH radio and satellite systems integration G. 860-G. 869 Optical transport networks G. 8704.879 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900-G.999 For further details, please refer to ITU-T List of Recommendations. ENTERPRISE VIEWPOINT FOR TRAIL MANAGEMENT Summary The trail management ser
7、vice provides functionality for: creationdeletion of trail termination points; associationdisassociation of trail termination points with/from subnetworks or access creatioddeletion and configuration of trails between a specified set of endpoints andor O groups; access groups at the boundary of a la
8、yer network. Source ITU-T Recommendation G.852.6 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 6.852.6 (03/99) I STDSITU-T RECMN G.852-b-ENGL 1999 m 4862591 bh0239 572 m FOREWORD ITU (International
9、 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 responsible for studying technical, operating and tariff questions and issuing Recommendations
10、 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 by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The ap
11、proval 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 standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation
12、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 correspondence are defined in the Constitution of the ITU (Geneva, 1992). INTELLECTUAL PROPERT
13、Y 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 concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether a
14、sserted 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 patents, which may be required to implement this Recommendation. However, implementors are cau
15、tioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. O ITU 1999 Ail 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 m
16、icrofilm, without permission in writing from the ITU. 11 Recommendation G.852.6 (03/99) CONTENTS Page 1 2 3 4 5 6 6.1 6.2 6.3 6.4 Scope References Definitions Abbreviations . Conventions Community trail management Purpose . Role . Communiqolicy . Action . 6.4.1 6.4.2 6.4.3 6.4.4 6.4.5 6.4.6 6.4.7 6.
17、4.8 6.4.9 6.4.1 O 6.4.1 1 6.4.12 6.4.13 6.4.14 6.4.15 6.4.16 6.4.17 6.4.18 Set up point-to-point trail Modi trail . Release trail . Create trail termination point Delete trail termination point Associate trail temination point with access group Disassociate trail termination point from access group
18、. Associate trail termination point with subnetwork . Disassociate trail termination point from subnetwork Report trail Set-up Report trail modification . Report trail release Report trail termination point creation Report trail termination point deletion Report association of trail termination poin
19、t with access group . Report disassociation of trail termination point from access group Report association of trail termination point with subnetwork . Report disassociation of trail termination point from subnetwork 1 1 1 1 2 2 2 3 3 3 4 5 5 6 6 7 7 8 8 9 9 9 9 9 9 10 10 . Recommendation 6.852.6 (
20、03199) 111 Recommendation 6.852.6 ENTERPRISE VIEWPOINT FOR TRAIL MANAGEMENT (Geneva, 1999) 1 Scope This Recommendation specifies the enterprise viewpoint for the trail management of a transport network. 2 References The following ITU-T Recommendations and other references contain provisions which, t
21、hrough reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; all users of this Recommendation are therefore encouraged to investigate the possibility of ap
22、plying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is published regularly. i ITU-T Recommendation G.85 1.1 (1 996), Management of the transport network - Application of the RM-ODP fiamework. 2 ITU-T Recommendat
23、ion G.852.2 (1999), Enterprise viewpoint description of transport network resource model. 3 Definitions None. 4 Abbreviations This Recommendation uses the following abbreviations: Id Identifier QOS Quality of Service RM-ODP SDH Synchronous Digital Hierarchy TE Transport Entity tm Trail Management TT
24、P Trail Termination Point WDM Wavelength Division Multiplexing Reference Model for Open Distributed Processing 5 Conventions For further study. Recommendation G.852.6 (03199) 1 STD-ITU-T RECMN G.852-b-ENGL 1979 48b2591 Obh0242 Ob? = 6 Community trail management 6.1 Purpose The objective of the commu
25、nity is to establish, use, configure, and release a trail between a specified set of endpoints and/or access groups at the boundary of a layer network. Functionality to create and delete trail termination points and to associate and disassociate them with subnetworks and access groups are provided a
26、s well. 6.2 Role tm-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. t mg rovider This role reflects the server of the actions defined within this community. One and only one provider role occurren
27、ce 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 occurrences may exist in the community. layer network domain This role represents the layer network domain resource de
28、fined in Recommendation G.852.2. One and only one role occurrence may exist in the community. trail This role reflects the trail resource (as defined in Recommendation G.852.2) involved in the trail management community. Zero or more trail role occurrences may exist in the community. trail terminati
29、on point This role reflects the trail termination point resource as defined in Recommendation G.852.2. Zero or more trail termination point role occurrences may exist within this community. subnetwork This role reflects the subnetwork resource as defined in Recornmendation G.852.2. Zero or more subn
30、etwork role occurrences may exist within this community. subnetwork connection This role reflects the subnetwork connection resource as defined in Recommendation G.852.2. Zero or more subnetwork connection role occurrences may exist within the community. access group This role reflects the access gr
31、oup resource as defined in Recommendation G.852.2. Zero or more access group role occurrences may exist in the community. 2 Recommendation 6.852.6 (03/99) STDaITU-T RECMN G.852.b-ENGL 1999 m 48b2591 Obb0243 TT3 m 6.3 Communiqjolicy OBLIGATION scope Only properties that are explicitly stated in this
32、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 serviceRejection In case of se
33、rvice rejection, 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 dependent on th
34、e shared knowledge of the infrastructure on which the community is running. For the case where any wrong parameters 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. OB
35、LIGATION viewinglapabilities The provider shall support a view 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 OBLIGATION architecturalCon
36、straints All the modifications performed on the resources in constraints expressed in Recommendation G.852.2. PERMISSION changeuserlabel belong to the community. the community shall respect the architectural The caller may change the user-defined label of the trail and the trail termination point. O
37、BLIGATION notifyUserLabelChange If PERMISSION changeuserlabel is used by the caller, any change of the user-defined label of a trail or a trail termination point shall be notified to the notification receiver. 6.4 Action 6.4.1 Set up point-to-point trail With this action, the caller has the ability
38、to request the immediate (the trail will be active once it is set up) setting-up of a trail between two identified trail termination points or access groups in the same layer network. ACTION-POLICY OBLIGATION supply TrailTerminationPoints/AccessGroups The caller shall identi a trail termination poin
39、t or an access group at each end of the trail in the same layer network. Recommendation 6.852.6 (03/99) 3 STD-ITU-T RECMN G-852-b-ENGL 1999 4862571 0bb0244 73T OBLIGATION trailTerminationPointsInUse The provider shall reject the request if at least one of the supplied trail termination points, or al
40、l the trail termination points of at least one of the supplied access groups (if access groups were identified) are already terminating a trail. In the case of failure, the provider shall return the identifier of the trail termination point in error. PERMISSION routingconstraints The caller may spec
41、ify routing constraints for the requested transport service. OBLIGATION routingConstraintsNotFulfilled - If PERMISSION routinglonstraints is used and the routing constraints specified could not be fulfilled by the provider, the request has to be rejected. The routing constraints are technology depen
42、dent and will be established outside the trail management community. - PERMISSION trafficcharacteristics The caller may specify the characteristics of a traffic descriptor to be associated with the requested transport service (e.g. service type, cell delay variation, burst size, peak rate, sustainab
43、le rate, QoS class, etc.). These characteristics are contract and technology specific. OBLIGATION trafficCharacteristicsNotFulfilled If PERMISSION trafficcharacteristics is used and the provider cannot support the required traffic characteristics, it shall reject the request. PERMIS SION inputUserId
44、 The caller may provide a user identifier for the requested trail. OBLIGATION rej ectUserIdNotUnique If PERMISSION inputUserId is part of the contracted service and if the user identifier is not unique in the provider context, then the provider shall reject the action. OBLIGATION providerUserId If P
45、ERMISSION inputUserId is part of the contracted service, then the provider shall use the user identifier as the unique trail identifier when communicating with the caller. OBLIGATION returnTrailAndTTPIds The provider shall, upon success of this action, return the unique identifiers for the trail and
46、 the actual trail termination points supplied or chosen from the access group. PERMISSION inputuserlabel The caller may provide a user-defined label for the requested trail. 6.4.2 Modify trail This action is used to modify the characteristics of a trail. ACTION-POLICY OBLIGATION supplyTrailId The ca
47、ller shall uniquely identifi the trail of which the characteristics have to be modified. 4 Recommendation G.852.6 (03/99) STD=ITU-T RECMN G-852.b-ENGL 1997 = 48b259L Clbb0245 67b m OBLIGATION noExistingTrailId This action will fail if the supplied trail identifier does not exist within the layer net
48、work domain. In the case of failure, the provider shall return the identifier of the trail in error. OBLIGATION requestTrailModification The provider shall give the possibility to modifj the data rate on an established active trail without the need to deactivate the trail. PERMISSION renegotiatepara
49、meters A caller may request the renegotiation (up or down) of the QoS on an active trail which may result in the modification of some Connectivity Service parameters affecting the overall QoS. OBLIGATION maintainInitialCharacteristics The initial characteristics shall be maintained if the requested modifications cannot be fulfilled. OBLIGATION reportRenegotiatedResult The outcome of the renegotiation shall be reported to the caller. 6.4.3 Release trail This action releases a trail. ACTION-POLICY OBLIGATION supplyTrailId The caller shall specifj the trail which has to be r
