1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.774.1 O (02/200 1 ) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments - Operations, administration and maintenance features of transmission equipment Synchro
2、nous Digital Hierarchy (SDH) - Multiplex Section (MS) shared protection ring management for the network element view ITU-T Recommendation G.774.1 O (Formerly CCITT Recommendation) INTERNATIONAL TELECOMMUNICATION UN ION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.774.10 (02/200 1 ) SERIES
3、 G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments - Operations, administration and maintenance features of transmission equipment Synchronous Digital Hierarchy (SDH) - Multiplex Section (MS) shared protection ring management for the network element view ITU
4、-T Recommendation G.774.1 O (Formerly CCITT Recommendation) ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER- TRANSMISSION SYSTEMS INDIVIDUAL CHARACTERIS
5、TICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE METALLIC LINES COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY TESTING EQUIPMENTS TRANSMISSION MEDIA CHARACTERISTICS DIGITAL TERMINAL EQUIPMENTS SYSTEMS ON RADIO-RELAY OR SA
6、TELLITE LINKS AND INTERCONNECTION WITH General Coding of analogue signals by pulse code modulation Coding of analogue signals by methods other than PCM Principal Characteristics of primary multiplex equipment Principal characteristics of second order multiplex equipment Principal characteristics of
7、higher order multiplex equipment Principal characteristics of transcoder and digital multiplication equipment Operations, administration and maintenance features of transmission equipment Principal characteristics of multiplexing equipment for the synchronous digital hierarchy Other terminal equipme
8、nt DIGITAL NETWORKS DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G. 100-G. 199 G.200-G.299 G.300-G.399 G.400-G.449 G.450-G.499 G.500-G.599 G.600-G.699 G.700-G.799 G.70ffi.709 G.710-G.719 G.720-G.729 G.730-G.739 c.740-G.749 G.750-G.759 G.760-G.769 G.770-6.779 G.780-G.789 G.790-G.799 G.800-G.899 G.900-G.9
9、99 Forfirther details, please refer to the list of ITU-T Recommendations. ITU-T Recommendation G.774.1 O Synchronous Digital Hierarchy (SDH) Multiplex Section (MS) shared protection ring management for the network element view Summary This Recommendation provides an information model for the Synchro
10、nous Digital Hierarchy (SDH) Network. This model describes the managed object classes and their properties for the configuration and post-configuration management of the protection switching function of SDH Multiplex Section (MS) Shared Protection Ring (SPR), as defined in ITU-T G.803 12, ITU-T G.84
11、1 i51 and ITU-T G.842 16. These objects are useful to describe information exchanged across interfaces defined in ITU-T M.301 O 3 Telecommunications Management Network (TMN) architecture for the configuration and post-configuration management of the protection function. I History I I Issue I Notes l
12、 I 200 1 I Initial version of the Recommendation. I Source ITU-T Recommendation G.774.10 was revised by ITU-T Study Group 15 (2001-2004) and approved under the WTSA Resolution 1 procedure on 9 February 2001. ITU-T G.774.10 (02/2001) i FOREWORD The International Telecommunication Union (ITU) is the U
13、nited Nations specialized agency in the field of telecommunications. The 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 tele
14、communications on a worldwide basis. The World Telecommunication Standardization 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
15、procedure laid down in WTSA Resolution 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 expression “Administration“ is used for conciseness to indicate both a
16、telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the eviden
17、ce, 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, ITU had not received notice of intellectual property, protected by patents, which may
18、 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 ITU 2001 All rights reserved. No part of this publication may be reproduced or utilized in any
19、form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from ITU. 11 ITU-T G.774.10 (02/2001) CONTENTS 1 2 4 5 5.1 5.2 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 7 7.1 7.2 7.3 7.4 7.5 7.6 8 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 Scope . References . Te
20、rms and Definitions Abbreviations SDH MS shared protection ring (SPR) protection management SDH MS SPR protection management requirements . SDH MS SPR information model overview . Managed object class definitions auSquelchTable . ms SPRProtectionGroup msSPRProtectionUnit . nutTable ripTable . sdhMSS
21、PRProtectionCoordinator sPRingManager . squelchTable . Packages changeSPRConfigurationPkg . enhancedwtr SpanPkg . fourFiberPUPkg manualSPRConfigurationPkg . restoreExtraTrafficPkg wtrSpanPkg . Attributes auTable auNurnber currentsquelchinglist . directionTable . enhancedWaitToRestoreTimeSpan msSPRPr
22、otectionStatus nodeNumber nutchannellist nutTableId . 1 1 2 2 5 5 5 7 8 8 8 9 10 10 10 11 11 11 11 12 12 12 12 13 13 13 13 16 16 16 ITU-T G.774.10 (02/2001) iii 8.10 8.11 8.12 8.13 8.14 8.15 8.16 8.17 8.18 8.19 8.20 8.21 9 9.1 9.2 9.3 10 11 11.1 11.2 11.3 11.4 12 12.1 12.2 12.3 12.4 12.5 12.6 13 pro
23、tectionGroupPointer restoreExtraTraffic ringId . ringMap . ringPu . ripchannellist ripTableId spanPU sPRingApplication sPRingManagerId . squelchTableId WaitToRestoreTimeSpan Actions changeSPRConfiguration updateRipTable . updateSquelchTable Notifications Parameters . ms SPRConfigurationEror msSPRLoc
24、koutTypeParameter . ms SPRProtectionGroupConfigParameter . msSPRProtectionStatusParameter Name Bindings . auSquelchTable-squelchTable nut Table-sPRingManager . ripTable-sPRingManager sPRingManager-managedElement squelchTable-sPRingManager Reuse of Existing Name Bindings Supporting ASN . 1 Production
25、s . Appendix I . Inheritance and containment diagrams Appendix II . Illustrations of MS SPR configuration . iv ITU-T G.774.10 (02/2001) Page 16 17 17 17 17 17 18 18 18 18 18 19 19 19 19 20 20 20 20 20 21 21 22 22 22 23 23 23 23 24 28 29 ITU-T Recommendation G.774.10 Synchronous Digital Hierarchy (SD
26、H) - Multiplex Section (MS) shared protection ring management for the network element view 1 Scope This Recommendation addresses the configuration and post-configuration management of automatic protection switching within the multiplex section (MS) shared protection ring (SPR), high and low order pa
27、th layers. It covers the protection functions as described in ITU-T G.841 15 and ITU-T G.842 161. It identifies the Telecommunications Management Network (TMN) object classes required for the management of the MS SPR protection function for SDH network elements. These objects are relevant to informa
28、tion exchanged across standardized interfaces defined in ITU-T M.3010 3 TMN architecture. Structure of this Recommendation Clause 5 provides an overview of the SDH MS SPR protection information model. Clauses 6 to 13 describe the information model using the notation mechanisms defined in ITU-T X.722
29、 7. Clause 13 contains the syntax definitions of the information carried in the protocol using Abstract Syntax Notation One (ASN.1) defined in ITU-T X.680 8. Containment and Inheritance are illustrated in Appendix I. 2 References The following ITU-T Recommendations and other references contain provi
30、sions which, through 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: users of this Recommendation are therefore encouraged to investigate the possibi
31、lity 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 G.707N.1322 (2000), Network node intevface for the synchronous digital hierarchy (SDH). 2 ITU-T G.708 (1999), Sub STM
32、-O network node interface for the synchronous digital hierarchy (SDH). 3 ITU-T M.301 O (2000), Principles for a telecommunication management network. 4 ITU-T M.3 100 (1995), Generic network information model. SI ITU-T G.783 (2000), Characteristics of synchronous digital hierarchy (SDH) equipment fun
33、ctional blocks. 6 ITU-T G.784 (1999), Synchronous digital hierarchy (SDH) management. 7 ITU-T X.722 (1992), Information technology - Open Systems Interconnection - Structure of management information: Guidelines for the definition of managed objects, plus Amd. 1 (1995), Amd.2 (1997) and Cor.1 (1996)
34、. ITU-T X.680 (1 997), Information technology - Abstract Syntax Notation One (ASN. 1): Speczjication of basic notation. 81 ITU-T G.774.10 (02/2001) 1 ITU-T X.720 (1992), Information technology - Open Systems Interconnection - Structure of Management Information: Management information model, plus Am
35、d. 1 (1 995) and Cor. 1 (1 994). ITU-T G.774 (200 i), Synchronous digital hierarchy (SDH) - Management information model for the network element view. ITU-T G.774.1 (2001), Synchronous digital hierarchy (SDH) - Bidirectional pegormance monitoring for the network element view. ITU-T G.803 (2000), Arc
36、hitecture of transport networks based on the synchronous digital hierarchy (SDH). ITU-T X.72 1 (1 992), Information technology - Open Systems Interconnection - Structure of management information - De$nition of management information, plus Cor. 1 (1 994), Cor.2 (1 996), Cor.3 (1 998) and Cor.4 (2000
37、). ITU-T G.774.3 (2001), Synchronous digital hierarchy (SDH) - Management of multiplex- section protection for the network element view. ITU-T G.841 (1 998), Types and characteristics of SDH network protection architectures. ITU-T G.842 (1997), Interworking of SDH network protection architectures. I
38、TU-T G.774.4 (2001), Synchronous digital hierarchy (SDH) - Management of the subnetwork connection protection for the network element view. ITU-T G.774.9 (200 i), Synchronous digital hierarchy (SDH) - ConJiguration of linear multiplex section protection for the network element view. Terms and Defini
39、tions This Recommendation uses the terms and definitions defined in ITU-T G.774, ITU-T G.784, ITU-T G.841, ITU-T G.842 and ITU-T M.3100. 4 Abbreviations This Recommendation uses the following abbreviations: AIS APDU APS CMIP CMIS CTP IS0 ITU-T LOF LOS MS MSP NE 2 Alarm Indication Signal Application
40、Protocol Data Unit Automatic Protection Switching Common Management Information Protocol Common Management Information Service Connection Termination Point International Organization for Standardization International Telecommunication Union - Telecommunication Standardization Sector Loss Of Frame Lo
41、ss Of Signal Multiplex Section Multiplex Section Protection Network Element ITU-T G.774.10 (02/2001) os os1 Pkg RDN RRP SD SDH SF SNCP SPR STM-N TMN TP TTP URP WTR Operations System Open Systems Interconnection Package Relative Distinguished Name Reliable Resource Pointer Signal Degrade Synchronous
42、Digital Hierarchy Signal Fail Subnetwork Connection Protection Shared Protection Ring Synchronous Transport Module N Telecommunications Management Network Termination Point Trail Termination Point Unreliable Resource Pointer Wait-to-Restore 5 The SDH MS SPR model is based on those generic classes an
43、d modeling principles outlined in ITU-T M.3 100 and on those common classes from ITU-T G.774.3. SDH MS shared protection ring (SPR) protection management 5.1 The management information model of the MS SPR protection shall support the following requirements: - According to the layer concept described
44、 in ITU-T G.805, it shall be possible to addremove or modify a layer network inside the NE having no effect on the other layers. That is, the MS SPR protection sublayer has to be introduced inside the MS layer from the functional point of view without having any effect on Path layer. SDH MS SPR prot
45、ection management requirements The establishment and dismiss of MS SPR protection has to be done without affecting traffic. The migration from already deployed network to a MS SPR has to be done without traffic cut, including migration from SNCP ring to 2F/4F MS SPR and migration from 2F to 4F ring.
46、 According to ITU-T G.841, the model should support any kind of path layer traffic, including unidirectional point-to-point, unidirectional point-to-multipoint (broadcast), and bidirectional. The existing capabilities of dynamic connection configuration (creation, deletion and modification) have to
47、be maintained; especially in case of modifications that do not affect traffic. (Addremove leg, addremove Drop and Continue for dual homing application, RIP table.) Configure 2-Fiber or 4-Fiber MS SPR or Transoceanic application. The information model shall support bidirectional ring switch. ITU-T G.
48、774.10 (02/2001) 3 The information model shall support 4-Fiber bidirectional span switch. The information model shall support forced and manual switch. The information model shall support lock out of the protected and protecting facility. The information model shall support exercise of protection sw
49、itch for maintenance activity. The information model shall support wait-to-restore time provisioning. Modifying the ring topology without impacting existing traffic as long as the node being removed is not involved in the traffic. Modifying the G.841 node ID (consequent change to ring map configuration) without causing spurious protection switch. This may happen because until the update are completed in all the nodes, the ring data may not be consistent. Changing a channel from NUT type to protected-type should not affect its traffic. Changing a channel fr
