ITU-T G 8081-2012 Terms and definitions for automatically switched optical networks (Study Group 15)《自动交换光网络(ASON)的术语和定义 15号研究组》.pdf

1、 International Telecommunication Union ITU-T G.8081/Y.1353TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2012) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Packet over Transport aspects Ethernet over Transport aspects SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERN

2、ET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Transport Terms and definitions for automatically switched optical networks Recommendation ITU-T G.8081/Y.1353 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHON

3、E CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-

4、RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITAL L

5、INE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 Ethernet over Transport aspects G.8000G.8099MP

6、LS over Transport aspects G.8100G.8199 Quality and availability targets G.8200G.8299 Service Management G.8600G.8699 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.8081/Y.1353 (02/2012) i Recommendation ITU-T G.8081/Y.1353 Terms and

7、definitions for automatically switched optical networks Summary Recommendation ITU-T G.8081/Y.1353 provides terms, definitions, and abbreviations used in automatically switched optical network (ASON) Recommendations. It contains a list of the definitions and abbreviations introduced in Recommendatio

8、ns associated with automatically switched optical networks, and can be considered a companion document to Recommendations ITU-T G.780/Y.1351 and ITU-T G.870/Y.1352. The goal of this Recommendation is to be a single normative source for terms in this subject area. History Edition Recommendation Appro

9、val Study Group 1.0 ITU-T G.8081/Y.1353 2004-06-13 15 1.1 ITU-T G.8081/Y.1353 (2004) Amd. 1 2006-06-06 15 1.2 ITU-T G.8081/Y.1353 (2004) Amd. 2 2007-07-29 15 2.0 ITU-T G.8081/Y.1353 2008-03-29 15 3.0 ITU-T G.8081/Y.1353 2010-09-22 15 4.0 ITU-T G.8081/Y.1353 2012-02-13 15 Keywords Abbreviations, acro

10、nyms, automatically switched optical network, ASON, terminology, terms. ii Rec. ITU-T G.8081/Y.1353 (02/2012) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The I

11、TU 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 telecommunications on a worldwide basis. The World Telecommunication Standardi

12、zation 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 procedure laid down in WTSA Resolution 1. In some areas of information tec

13、hnology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compli

14、ance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obl

15、igatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementat

16、ion of this Recommendation may involve the use of a claimed Intellectual Property Right. 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 o

17、f the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged t

18、o consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2012 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.8081/Y.1353 (02/2012) iii Table of Contents Page 1 Scope 1 2 References.

19、1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 4 4 Abbreviations and acronyms 12 Appendix I List of source ITU-T Recommendations . 15 Appendix II Related definitions found in documents from other organizations . 16 Appendix III Related abbreviations and ac

20、ronyms found in documents from other organizations . 46 Bibliography. 51 Rec. ITU-T G.8081/Y.1353 (02/2012) 1 Recommendation ITU-T G.8081/Y.1353 Terms and definitions for automatically switched optical networks 1 Scope This Recommendation contains a complete listing of the terms, definitions, and ab

21、breviations introduced in the Recommendations associated with automatically switched optical networks (ASON). 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 p

22、ublication, the editions indicated were valid. All Recommendations and other references are subject to revision; 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 o

23、f the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T G.780 Recommendation ITU-T G.780/Y.1351 (2008), Terms and definitions for synchronous digital

24、hierarchy (SDH) networks. ITU-T G.800 Recommendation ITU-T G.800 (2012), Unified functional architecture of transport networks. ITU-T G.805 Recommendation ITU-T G.805 (2000), Generic functional architecture of transport networks. ITU-T G.806 Recommendation ITU-T G.806 (2009), Characteristics of tran

25、sport equipment Description methodology and generic functionality. ITU-T G.852.2 Recommendation ITU-T G.852.2 (1999), Enterprise viewpoint description of transport network resource model. ITU-T G.870 Recommendation ITU-T G.870/Y.1352 (2008), Terms and definitions for optical transport networks (OTN)

26、. ITU-T G.7712 Recommendation ITU-T G.7712/Y.1703 (2008), Architecture and specification of data communication network. ITU-T G.7713 Recommendation ITU-T G.7713/Y.1704 (2009), Distributed call and connection management (DCM). ITU-T G.7713.1 Recommendation ITU-T G.7713.1/Y.1704.1 (2003), Distributed

27、Call and Connection Management (DCM) based on PNNI. ITU-T G.7713.2 Recommendation ITU-T G.7713.2/Y.1704.2 (2003), Distributed Call and Connection Management: Signalling mechanism using GMPLS RSVP-TE. ITU-T G.7713.3 Recommendation ITU-T G.7713.3/Y.1704.3 (2003), Distributed Call and Connection Manage

28、ment: Signalling mechanism using GMPLS CR-LDP. ITU-T G.7714 Recommendation ITU-T G.7714/Y.1705 (2005), Generalized automatic discovery for transport entities. ITU-T G.7714.1 Recommendation ITU-T G.7714.1/Y.1705.1 (2010), Protocol for automatic discovery in SDH and OTN networks. 2 Rec. ITU-T G.8081/Y

29、.1353 (02/2012) ITU-T G.7715 Recommendation ITU-T G.7715/Y.1706 (2002), Architecture and requirements for routing in the automatically switched optical networks. ITU-T G.7715.1 Recommendation ITU-T G.7715.1/Y.1706.1 (2004), ASON routing architecture and requirements for link state protocols. ITU-T G

30、.7715.2 Recommendation ITU-T G.7715.2/Y.1706.2 (2007), ASON routing architecture and requirements for remote route query. ITU-T G.7716 Recommendation ITU-T G.7716/Y.1707 (2010), Architecture of control plane operations. ITU-T G.8080 Recommendation ITU-T G.8080/Y.1304 (2012), Architecture for the aut

31、omatically switched optical network and its amendments. ITU-T M.3010 Recommendation ITU-T M.3010 (2000), Principles for a telecommunications management network. ITU-T M.3013 Recommendation ITU-T M.3013 (2000), Considerations for a telecommunications management network. ITU-T M.3100 Recommendation IT

32、U-T M.3100 (2005), Generic network information model. ITU-T X.25 Recommendation ITU-T X.25 (1996), Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuit. ITU-T

33、 X.700 Recommendation ITU-T X.700 (1992), Management framework for Open Systems Interconnection (OSI) for CCITT applications. ITU-T Y.1311 Recommendation ITU-T Y.1311 (2002), Network-based VPNs Generic architecture and service requirements. 3 Definitions 3.1 Terms defined elsewhere This Recommendati

34、on uses the following terms defined elsewhere: 3.1.1 Terms defined in ITU-T G.780 data communications channel (DCC) embedded control channel (ECC) layer network node interface (NNI) protection 3.1.2 Terms defined in ITU-T G.805 access group (AG) access point (AP) administrative domain client-server

35、relationship connection termination point (CTP) NOTE ITU-T G.805 uses the acronym TCP for this term. layer network Rec. ITU-T G.8081/Y.1353 (02/2012) 3 link link connection management domain network connection partitioning port subnetwork connection trail trail termination transport transport networ

36、k unidirectional access point unidirectional connection unidirectional connection point unidirectional port unidirectional trail 3.1.3 Terms defined in ITU-T G.806 client/server layer continuity supervision management information (MI) management point (MP) 3.1.4 Terms defined in ITU-T G.870 entity l

37、ocal craft terminal management communications optical channel (OCh) optical channel data unit (ODUk) optical channel transport unit (OTUk) OTN network element (O.NE) optical overhead signal (OOS) optical supervisory channel (OSC) optical transport network (OTN) optical transport network node interfa

38、ce (ONNI) restoration resource transport entity 3.1.5 Terms defined in ITU-T G.7712 data communication network (DCN) dual interfaces signalling communication network (SCN) 4 Rec. ITU-T G.8081/Y.1353 (02/2012) 3.1.6 Terms defined in ITU-T M.3010 data communication function (DCF) mediation device (MD)

39、 network element (NE) network element function (NEF) operations system (OS) operations system function (OSF) Q interface q reference points reference point (RP) 3.1.7 Terms defined in ITU-T M.3013 message communication function (MCF) workstation function (WSF) 3.1.8 Terms defined in ITU-T M.3100 man

40、agement interface managed entity 3.1.9 Term defined in ITU-T X.25 closed user group 3.1.10 Term defined in ITU-T X.700 managed object (MO) 3.1.11 Term defined in ITU-T Y.1311 virtual private network (VPN) 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1

41、 access group container (AGC): An AGC is a single layer entity that contains access groups, link resource managers (LRMs), and termination and adaptation performers (TAPs). It is similar to subnetworks defined by ITU-T G.805 except that it is not recursively defined, may or may not be a matrix (it d

42、oes not have to be specified), and has no defined subnetwork connections. See ITU-T G.8080. 3.2.2 address: An address is a string of symbols that is valid regardless of the location of the source but changes if the destination moves. An address is used for the purpose of routing. Source and destinat

43、ion addresses must be globally unique. 3.2.3 agent: Within this Recommendation, the term agent is used to describe the entity that represents certain attributes and behaviour of a resource. The agent allows interaction between various resources and management and control functions. More than one age

44、nt may represent a resource. 3.2.4 allocated (resource) label range: An allocated (resource) label range is the set of labels that can be used by the adaptation function of a particular link to carry user traffic. It is a subset of the potential resource label range. The allocated labels are entitie

45、s that can be referenced in the transport plane name space. Each allocated label is associated with one or multiple subnetwork point (SNP) IDs that exist in the control plane name space (1:n relationship). Termination and adaptation performers (TAPs) hold this binding information. Rec. ITU-T G.8081/

46、Y.1353 (02/2012) 5 3.2.5 assigned SNPs: The assigned subnetwork points (SNPs) are those SNPs out of the set of potential SNPs that have been assigned to a particular connection. This means that the associated label corresponds to a configured label. 3.2.6 automatic encapsulating data communication f

47、unction (AE-DCF): An AE-DCF automatically encapsulates packets when necessary so that they may be routed by NEs that would otherwise be unable to forward them. An AE-DCF also features a matching de-encapsulation function to restore the packet back to its original form once it has traversed incompati

48、ble NEs. 3.2.7 automatic switched transport network (ASTN):An ASTN is a transport network where configuration connection management is implemented by means of a control plane. 3.2.8 automatically switched optical network (ASON): An automatically switched transport network (ASTN) that is applied to c

49、onnection oriented circuit or packet transport networks, as defined in ITU-T G.800. 3.2.9 call: A call is an association between two or more users and one or more domains that support an instance of a service through one or more domains. Within domains, the association is supported by network entities that contain call state. Between a user and a