1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T G.874 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1 (08/2015) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks Optical transport networks Management aspects of optical tr
2、ansport network elements Amendment 1 Recommendation ITU-T G.874 (2013) Amendment 1 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSI
3、ON 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-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPH
4、ONY 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 General aspects G.800G.809 Design objectives for digital networks G.810G.819 Synchronization, quality and availability targets G.820G
5、.829 Network capabilities and functions G.830G.839 SDH network characteristics G.840G.849 Management of transport network G.850G.859 SDH radio and satellite systems integration G.860G.869 Optical transport networks G.870G.879 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF
6、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 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recomm
7、endations. Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) i Recommendation ITU-T G.874 Management aspects of optical transport network elements Amendment 1 Summary Amendment 1 to Recommendation ITU-T G.874 (2013) updates Table 7-1, Table 7-2, Table 7-3, Table 8-1, Table 8-2 and Table 10-1 and removes Figur
8、e 8-1. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.874 2001-11-29 15 11.1002/1000/5607 2.0 ITU-T G.874 2008-03-29 15 11.1002/1000/9376 3.0 ITU-T G.874 2010-07-29 15 11.1002/1000/10881 3.1 ITU-T G.874 (2010) Cor. 1 2011-06-06 15 11.1002/1000/11121 3.2 ITU-T G.874 (2010)
9、 Amd. 1 2012-04-06 15 11.1002/1000/11493 3.3 ITU-T G.874 (2010) Amd. 2 2012-10-29 15 11.1002/1000/11792 4.0 ITU-T G.874 2013-08-29 15 11.1002/1000/11987 4.1 ITU-T G.874 (2013) Amd. 1 2015-08-13 15 11.1002/1000/12559 _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address
10、field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunicatio
11、ns, information and communication technologies (ICTs). 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 telecommunications
12、 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 procedure laid
13、 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 ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunicat
14、ion administration and a recognized operating agency. Compliance 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 manda
15、tory provisions are met. The words “shall“ or some other obligatory 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 RIGHTSITU draws at
16、tention 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 evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or oth
17、ers 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 be required to implement this Recommendation. However, implementers are cautioned that this may not represen
18、t the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 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.874 (2013)/Amd
19、.1 (08/2015) 1 Recommendation ITU-T G.874 Management aspects of optical transport network elements Amendment 1 1) Clause 4, Abbreviations and acronyms Update clause 4 with new abbreviations as shown in revision marks below: This Recommendation uses the following abbreviations and acronyms: 1second 1
20、-second pulse AcPT Accepted PT AcSTAT Accepted STAT AcTI Accepted TTI AdminState Administrative State AIS Alarm Indication Signal ALM Alarm reporting AP Access Point APR Automatic Power Reduction APRCntrl Automatic Power Reduction Control ARC Alarm Reporting Control AutoMS Automatic configuration of
21、 the Multiplex Structure BDI Backward Defect Indicator BDI-O Backward Defect Indicator Overhead BDI-P Backward Defect Indicator Payload BIAE Backward Incoming Alignment Error BIP Bit Interleaved Parity CBRx Constant Bit Rate signal of bit rate range x CLNE Client Layer Network Entity COMMS OH genera
22、l management Communications Overhead CP Connection Point CSF Client Signal Failure CTP Connection Termination Point CWDM Coarse Wavelength Division Multiplexing DCC Data Communications Channel DCN Data Communication Network DS Defect Second DS-O Defect Second Overhead 2 Rec. ITU-T G.874 (2013)/Amd.1
23、 (08/2015) DS-P Defect Second Payload DEG Degraded defect DEGM DEG consecutive 1-second monitoring intervals DEGThr DEG 1-second EBC threshold DTDL Defect Type and Defect Location DWDM Dense Wavelength Division Multiplexing EBC Errored Block Count ECC Embedded Control Channel EMF Equipment Managemen
24、t Function EMS Element Management System ExDAPI Expected Destination Access Point Identifier ExMSI Expected Multiplex Structure Identifier ExSAPI Expected Source Access Point Identifier ExtCMD External Command F Far-end FCAPS Fault, Configuration, Accounting, Performance and Security management FDI
25、Forward Defect Indicator FDI-O Forward Defect Indicator Overhead FDI-P Forward Error Correction Payload FEC Forward Error Correction FECEn Forward Error Correction Enabled FECCorrErr Forward Error Correction Corrected Errors FOP Failure of Protocol FOP-PM Failure of Protocol; Provisioning Mismatch F
26、OP-NR Failure of Protocol; No Response GCC General Communication Channel GCCAccess General Communication Channel Access GCCCont General Communication Channel Continue GetAcTI Get Accepted trail Trace Identifier GFC Generic Flow Control GNE Gateway Network Element HEC Header Error Control HoTime Hold
27、-off Time IAE Incoming Alignment Error IaDI Intra-Domain Interface IrDI Inter-Domain Interface LAN Local Area Network Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) 3 LCD Loss of Cell Delineation LCK Locked defect LFD Loss of Frame Delineation LOA Loss of Alignment LOF Loss of Frame LOFLOM Loss of Frame an
28、d (Loss of) Multiframe LOFOTL Loss of Frame of Optical Lane LOL Loss of Lane alignment LOM Loss of Multiframe LOOMFI Loss of OPU Multiframe Indication LOS Loss of Signal LOS-O Loss of Signal Overhead LOS-P Loss of Signal Payload LSS Loss of pseudo-random bit Sequence lock LTC Loss of Tandem Connecti
29、on MAF Management Application Function MCF Message Communications Function MCN Management Communication Network MI Management Information MIB Management Information Base MO Managed Object MP Management Point MPI Main Path Interface MSI Multiplex Structure Identifier MSIM Multiplex Structure Identifi
30、er Mismatch NALM No Alarm reporting NALM-CD No Alarm reporting, CountDown NALM-NR No Alarm reporting, NotReady NALM-QI No Alarm reporting, Qualified Inhibit NALM-TI No Alarm reporting, Timed Inhibit NE Network Element NEF Network Element Function NT Network Terminal OCh Optical Channel OChr Optical
31、Channel with reduced functionality OCI Open Connection Indication ODU Optical Data Unit 4 Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) ODUi Optical Data Unit of level i ODUij Optical Data Unit of level j and i (i is optional; i j) ODUj Optical Data Unit of level j ODUj/i Optical Data Unit of level j or i
32、 (i is optional; i j) ODUk Optical Data Unit of level k, k=0, 1, 2, 2e, 3, 4, flex ODUkP Optical Data Unit of level k, Path, k=0, 1, 2, 2e, 3, 4, flex ODUkT Optical Data Unit of level k, Tandem connection sub-layer, k=0, 1, 2, 2e, 3, 4, flex ODUkTm ODUkT non-intrusive monitoring function, k=0, 1, 2,
33、 2e, 3, 4, flex OLNE Optical Layer Network Entity O.MN OTN Management Network OMS Optical Multiplex Section O.MSN OTN Management Subnetwork OMSn Optical Multiplex Section of level n O.NE OTN Network Element OOS Optical transport module Overhead Signal OPSn Optical Physical Section of level n, n=0, 1
34、6, 32 OPSMnk OPS Multi-lane, k=3, 4; n=4 OS Operations System OSC Optical Supervisory Channel OSI Open Systems Interconnection OTH Open Transport Hierarchy OTL Optical channel Transport Lane OTLk.n. Optical Transmission Lane of OTUk lane number n OTM Optical Transport Module OTN Optical Transport Ne
35、twork OTS Optical Transmission Section OTSn Optical Transmission Section of level n OTU Optical Transmission Unit OTUk Optical Transmission Unit of level k, k=1, 2, 3, 4 OTUkV Optical Transmission Unit of level k, functional standardized, k=1, 2, 3, 4 PCS Physical Coding Sublayer PLM PayLoad Mismatc
36、h PMC Performance Monitoring Clock PPP Point-to-Point Protocol ProtType Protection Type PRBS Pseudo-Random Bit Sequence PT Payload Type Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) 5 RSn Regenerator Section of level n RTC Real-Time Clock RTR Reset Threshold Report SCN Signalling Communication Network SDH
37、 Synchronous Digital Hierarchy Sk Sink So Source SSF Server Signal Fail SSF-O Server Signal Fail Overhead SSF-P Server Signal Fail Payload STAT Status field TCP Termination Connection Point TI Trace Identifier TIM Trace Identifier Mismatch TIMActDis Trace Identifier Mismatch consequent Actions Disab
38、led TIMDetMo Trace Identifier Mismatch Detection Mode TMN Telecommunications Management Network TP Termination Point TPusgActive TP usage measurement Active TR Threshold Report TSE Test Sequence Error TT Trail Termination TTI Trail Trace Identifier TTP Trail Termination Point TTPSk Trail Termination
39、 Point Sink TTPSo Trail Termination Point Source TxMSI Transmitted Multiplex Structure Identifier TxTI Transmitted trail Trace Identifier VcPLM Virtual concatenation Payload Mismatch VP Virtual Path VPI Virtual Path Identifier WDM Wavelength Division Multiplexing 2) Table 7-1 in clause 7.2.1, Fault
40、cause persistency function PRS Update Table 7-1 in clause 7.2.1 as shown in revision marks below: 6 Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) Table 7-1 Inputs/outputs for the fault cause persistency function Atomic functions Input (fault cause) Output (failure) OSM256.4/CBRx_A_So cLOF fLOF OTSn_TT_Sk
41、cTIM cBDI cBDI-O cBDI-P cLOS-O cLOS-P cLOS fTIM fBDI fBDI-O fBDI-P fLOS-O fLOS-P fLOS OMSn_TT_Sk cBDI cBDI-O cBDI-P cSSF cSSF-O cSSF-P cLOS-P fBDI fBDI-O fBDI-P fSSF fSSF-O fSSF-P fLOS-P OMSnP_TT_Sk cSSF cSSF-O cSSF-P fSSF fSSF-O fSSF-P OPSn_TT_Sk cLOS-P fLOS-P OPSMnk_TT_Sk cLOS cLOL fLOS fLOL OPSM/
42、OTUk-a_A_Sk cLOS cLOM fLOS fLOM OPSM/OTUk-b_A_Sk cLOS cLOM fLOS fLOM OCh_TT_Sk cLOS-P cSSF cSSF-P cSSF-O cOCI fLOS-P fSSF fSSF-P fSSF-O fOCI OChr_TT_Sk cLOS cSSF-P fLOS fSSF-P OCh/OTUk-a_A_Sk cLOF cLOM fLOF fLOM OCh/OTUk-b_A_Sk cLOF cLOM fLOF fLOM OCh/OTUk-v_A_Sk cLOF cLOM fLOF fLOM OCh/OTUkV_A_Sk c
43、LOF cLOM (multiframe OTUkV only) fLOF fLOM OCh/RSn_A_Sk cLOF fLOF OTUk_TT_Sk cTIM cDEG cBDI cSSF fTIM fDEG fBDI fSSF Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) 7 Table 7-1 Inputs/outputs for the fault cause persistency function Atomic functions Input (fault cause) Output (failure) OTUkV_TT_Sk cTIM cDEG
44、 cBDI cSSF fTIM fDEG fBDI fSSF OTUkV/ODUk_A_Sk (If loss of alignment supervision is performed) cLOA fLOA ODUk_C cFOP-PM cFOP-NR fFOP-PM fFOP-NR ODUkP_TT_Sk cOCI cTIM cDEG cBDI cSSF cLCK fOCI fTIM fDEG fBDI fSSF fLCK ODUkP/CBRx_A_Sk cPLM cCSF fPLM fCSF ODUkP/VP_A_Sk cPLM cLCD fPLM fLCD ODUkP/NULL_A_S
45、k cPLM fPLM ODUkP/PRBS_A_Sk cPLM cLSS fPLM fLSS ODUkP/RSn_A_Sk cPLM cLOF fPLM fLOF ODUkP/ODUij_A_Sk cPLM cMSIMp cLOFLOMp NOTE p = 1.n, when doing n x ODUj_CP and p = 1m when doing m x ODUi_CP respectively fPLM fMSIMp fLOFLOMp ODUkP/ODUj-21_A_Sk cPLM cLOOMFI cMSIMp cLOFLOMp NOTE p = 1.n, when doing n
46、 x ODUj_CP fPLM fLOOMFI fMSIMp fLOFLOMp ODUkP-h/ETH_A_Sk cPLM cLFD cUPM cEXM cCSF fPLM fLFD fUPM fEXM fCSF ODUkP-h/ODUj-21_A_Sk cPLM cLOOMFI cMSIMp cRCOHM NOTE p = 1.n, when doing n x ODUj_CP fPLM fLOOMFI fMSIMp fRCOHM 8 Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) Table 7-1 Inputs/outputs for the fault
47、cause persistency function Atomic functions Input (fault cause) Output (failure) ODU2eP/FC-1200_A_Sk cPLM cCSF cLFD fPLM fCSF fLFD ODUkT_TT_Sk cOCI cTIM cDEG cBDI cSSF cLCK cLTC fOCI fTIM fDEG fBDI fSSF fLCK fLTC ODUkTm_TT_Sk cOCI cTIM cDEG cBDI cSSF cLCK cLTC fOCI fTIM fDEG fBDI fSSF fLCK fLTC ODUk
48、P-Xv/ODUkP-X-L_A_Sk cPLM1XMR fPLM1XMR ODUkP-X-L/CBRx_A_Sk cVcPLM fVcPLM ODUkP-X-L/RSn_A_Sk cVcPLM cLOF fVcPLM fLOF ODUkP-X-L/VP_A_Sk cVcPLM cLCD fVcPLM fLCD ODUkP-X-L/NULL_A_Sk cVcPLM fVcPLM ODUkP-X-L/PRBS_A_Sk cVcPLM cLSS fVcPLM fLSS OSx_TT_Sk, x=2G5, 10G, 40G cLOS fLOS 3) Table 7-2 in clause 7.2.3
49、, Alarm reporting control function ARC Update Table 7-2 in clause 7.2.3 as shown in revision marks below: Rec. ITU-T G.874 (2013)/Amd.1 (08/2015) 9 Table 7-2 ARC specifications for the OTN Atomic function Qualified problems QoS reporting Default ARC state value constraints OSM256.4/CBRx_A_So fLOF FFS ALM OTSn_TT_Sk fTIM fBDI fBDI-P fLOS-P fLOS FFS ALM OMSn_TT_Sk fBDI fBDI-P fSSF fSSF-P fLOS-P FFS ALM OMSnP_TT_Sk fSSF fSSF-P FFS ALM OPSn_TT_Sk fLOS-P FFS ALM OPSMnk_TT_Sk f
