Facility loopback, Oos, Ais | Nortel Networks NTRN10AN, 3500

2-56Operation, administration, and maintenance (OAM) features

Figure 2-30

Facility loopback

Ex1394t

OOS

Rx

OCn

Tx

AIS

Optical terminal loopbacks

During a terminal loopback, a signal received on the switch card (STX-192 or VTX-series) side of the facility is looped back towards the associated incoming transmitter. To operate a terminal loopback, the facility must be manually put out of service (OOS). Figure 2-31illustrates an optical terminal loopback.

Figure 2-31

Terminal loopback

Ex1395t

OOS

Rx

OCn

Tx

Engineering rules

•Facility and terminal loopbacks are supported on DS1, DS3x3, DS3x12, DS3VTx12, EC-1x3, EC-1x12, 2x10/100BT, OC-3, 2xGigE/FC-P2P, OC-3x4, OC-12, OC-12x4 STS, and OC-48, OC-48 STS and OC-192 circuit packs.

Note: Terminal loopback is not supported on the OC-192 circuit packs.

•Terminal and facility loopbacks can not be performed at the same time on the same optical facility.

•Terminal and facility loopbacks for multi-port optical circuit packs are done on a per port basis. Only one loopback is allowed per port at any one time.

•Terminal and facility loopbacks are maintained during;

—circuit pack restarts (warm/cold) if a shelf processor is present in the shelf

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004

Image 94

Nortel Networks NTRN10AN, 3500 manual Facility loopback, Oos, Ais, Optical terminal loopbacks, Terminal loopback

Contents

OPTera Metro 3500 Multiservice Platform Copyright  2000-2004 Nortel Networks, All Rights Reserved Contents Iv Contents Contents Hardware feature descriptions Contents Page Standards Supported software Hardware naming conventions Supported hardwareAudience OPTera Metro 3500 NTP library NTRN16AA Technical support and information For non-service-affecting problems North AmericaGlobal software upgrade support North America International Overview Network element overview Loam Loam Release 12.1 features In-service reconfigurations Dwdm DS1 ServicesDS3 8Overview Overview Performance monitoring Security and administration Bandwidth management Blsr Miscellaneous 14Overview Overview Release 12.1 Hardware Compatibility Matrix Platforms with STX VTX-series Circuit packs OC-3x4 Yes 18Overview Supported configurations Upsr Linear Spur OC-48 OC-3 Requires dual slot circuit OC-12 Pack 22Overview VTX-48e Linear pt-to-pt or OC-12 ADM chain OC-3 24Overview Interworking Supported upgrade paths Operation, administration, and maintenance OAM features New or enhanced OAM features in OPTera Metro 3500 Release OPTera Metro 3500 OAM features Gigabit Ethernet Drop and Continue Gigabit Ethernet drop and continue application P2P Alarm provisioning Engineering rules Alarm flow control Bandwidth management Environmental alarmsExternal controls Tributary, DWDM, BLSR, UPSR, and 1+1 linear point-to-point In-service traffic rollover Connection editing OPTera Metro Switching matrixBlsr networks 2-fiber STS or 5376 VT User-initiated Blsr switching commands Protection ’Infinite wait-to-restore’ parameter Automatically initiated Blsr switching requests Blsr Line Protection Oscillation Control Blsr single span fiber cut scenario Blsr single span Fiber cut example Step Action Node status ’Bridged and Switched’ 16Operation, administration, and maintenance OAM features Blsr ring switch example UEQ 18Operation, administration, and maintenance OAM features Node 1 and 2 state change detail Idle State 20Operation, administration, and maintenance OAM features EX1242p 22Operation, administration, and maintenance OAM features State Protection traffic 24Operation, administration, and maintenance OAM features Blsr nodal / multi-span failure scenario involves squelching 26Operation, administration, and maintenance OAM features A-B OC-48 Blsr node failure exampleC-B OC-192 Blsr node failure example Blsr configuration attributes Blsr configurationsSTS paths and squelch map for a four-node 2-Fiber Blsr ring Blsr configuration distribution Blsr configuration and connection auditBlsr configuration audit Blsr connection audit Traffic flow over OC-48 BlsrSTS Blsr with VT assignment VT Blsr with full VT access Traffic flow over OC-192 Blsr Network Element a DS1 add/drop Risk of traffic loss Provisioning rulesOC-48/OC-192 Blsr provisioning rules Rule # Description OC-48/OC-192 Blsr provisioning rules 36Operation, administration, and maintenance OAM features EX1294p 38Operation, administration, and maintenance OAM features West optics East optics IPTR-4 IPTR-2IPTR-3 IPTR-1 RPR over a Blsr and subtending Upsr example Upsr #1 Upsr #2 OAM supported on Blsr Changing the Blsr configuration / connection audit period Channelized DS3 service DS3VTx12 mapperCommon Language Location Identifier Connection ID Consolidated load Dense wavelength division multiplexing Dwdm OPTera Metro 3500 bands Band OMX module Network sites OPTera Metro 3500 and OMX interconnect Hubbed-ring configuration Dwdm configurationsPhysical connections in a hubbed-ring configuration 3500 Meshed-ring configuration Logical connections in a hubbed-ring configuration3500 3500 3500 Logical connections in a meshed-ring configuration Physical connections in a meshed-ring configuration3500 Physical Connections 3500 Dwdm point-to-point configurationLinear point-to-point 3500 Logical Connections Terminal loopback Facility attributesLoopbacks Facility loopback Electrical Loopback types Optical loopbackOptical facility loopbacks AIS Facility loopbackOOS Optical terminal loopbacks Operation, administration, and maintenance OAM features Extended network processor NPx Network surveillance2x100BT-P2P loopback conditioning Telemetry byte-oriented serial Tbos Single-ended Tbos Path trace Remote alarm LED indicatorTbos report format TID address resolution protocol Tarp Section trace Connectors OPTera Packet Edge System Resilient Packet Ring Ethernet Resilient packet ring RPR object Resilient packet ring shelf level 64Operation, administration, and maintenance OAM features Auto save notification RPR configuration alertTraps NNI Filters increased to 2x100BT-P2P circuit pack PPP over Sonet PPP and Hdlc 2x100BT-P2P circuit pack model Hdlc STS1/3C PPP/BCP Bridge Control Protocol Network protection using UPSR, 1+1 linear and Blsr2x100BT-P2P logical datapath overview Oamp support Ethernet Operational Measurements Operation, administration, and maintenance OAM features Bandwidth Reservation Protocol BRP Distributed multilink trunkingTDIs on a mapped UNI Optical Ethernet Private Line OE-PL and Storage applications 2xGigE/FC-P2P circuit pack Alarm management SDH Equipment alarms 76Operation, administration, and maintenance OAM features Small Form Factor Pluggables SFP alarms Ingress LAN port alarms Ingress LAN port alarms Alarm Description Severity For Fibre Channel facilities, this alarm For Fibre Channel facilities , this alarm LAN WAN LAN Ingress AlarmsEgress WAN port and service alarms LAN GFP Vcat SUBRATE=DISABLE 82Operation, administration, and maintenance OAM features Client Service Mismatch Lanwan Bandwidth managementContiguous concatenation Engineering rules Facility attributesVirtual concatenation Ethernet facility 86Operation, administration, and maintenance OAM features Fibre Channel facility MTU 88Operation, administration, and maintenance OAM features WAN facility STS12C, STS24C Provunits WAN GFP Supported on 2xGigE/FC-P2P Supported on 2xGigE/FC-P2P circuit Pack Outframesdiscds Alignerr 94Operation, administration, and maintenance OAM features SES Performance MonitoringFibre Channel Extended Reach INFRAMESERR/INFRAME Inoctetserr UAS Storage over Sonet GFP and Flow Control Enable Distance Extension See Note Generic Framing Procedure GFP Generic Framing Procedure and Virtual Concatenation support60950 91430 182860 GFP Encapsulation GFP FCS Virtual Concatenation Vcat Efficiency Rate Performance monitoring Optical interoperability of OPTera MetroSonet line, section, and path parameters Threshold values Hard-coded default threshold values facility typeUser defined default threshold values facility type User defined threshold values facility Line Path ES-PFE ES-PSES-P SAS-P SES-PFESEFS-PFE SEFS-P FC-P FC-PFE Operation, administration, and maintenance OAM features Retrieving performance monitoring counts Physical PMs NTN445DA NTN408DANTN445CB NTN445JA Resetting registers and invalid data flag Storage and retrieval of physical PMs Performance monitoring threshold crossing alerts TCA TCA summary alarmsTCAs Alarms Preside Software Upgrade Management support Site Manager support Preside Applications Platform and Multiservice MOA support Site Manager main window Protection switching Protection hierarchy 120Operation, administration, and maintenance OAM features Protection PM in a linear 1+1 configuration Protection PM in a Blsr configuration Security and administration Local account user authentication Local ‘challenge-response’ user authentication Centralized Security Administration CSA Risk of unauthorized access Operation, administration, and maintenance OAM features ’Access-Request’ Time s Server ’Access-Reject’ ’Access-Accept’ Secure storage of authentication data SecurID support Span of control Saving and restoring provisioning dataLocal TL1 of provisioning data Individual shelf processor Security levels Application of TL1 commands from a TL1 script fileLevel System identifier SID Remote login Multiple login sessions NPx login sessions SPx login sessionsEnhanced Intrusion Detection Intrusion attempt handling Password restrictions Password managementLogical flow of intrusion attempt handling Password Reuse Enhanced password restrictionsPassword Aging Customer managed networks Temporary Accounts Security log audit trail ACT-USER, CANC-USER, ED-SECU-PID ALW-MSG-ALL INH-MSG-ALL SECU401 General Broadcast toolLog Names Log name Log events SECU410 Modifiable Login Banner Example of Modified Login Banner Restore-banner Login banner functionality STS Managed DSM NE3 DSM NE2 DSMNE1 DSM NE4 NE5 NE1NE4 DSM STS1 AID is used to perform BWM operations on STS1 endpoints to DS1 facility grouping assignmentsGroup of DS1 facilities Support for 12 DSM Synchronization Line timing Internal timingExternal timing Transport line timing Line timing mode transport / tributary Timing signal sources Internal timing modeExternal timing mode Tributary line timing Timing modes Synchronization hierarchy Stratum clocksSMC Timing loops Hierarchy violationsST3 Hierarchical network synchronization Building-integrated timing supply Bits Network element synchronization modes External timing Line timing Flow of synchronization timing signals Timing sources and timing distribution Synchronization-status messages ST2 ST1 PRSSTU ST4 User-specified quality levels for timing sources User-initiated synchronization switchesBits output with VTX-series or STX-192 circuit packs DUS Test Access Test Access Ports TAPs Site Manager Test Access Session Management window Test access components Test access configurationsMonitoring test access DCN Test access-monitor state Single FAD, Mone and Single FAD Monf Monitoring test access-Dual FAD, Monef Monitoring test access-Single FAD, MoneMonitoring test access-Single FAD, Monf TAP Test access-split state Split test accessSingle FAD, Splte and Single FAD Spltf Split test access-Single FAD, Spltf Split test access-Single FAD, SplteSplit test access-Single FAD, Splta Split test access-Dual FAD, Spltef Loss of association and auto recoveryDual FAD, Spltef User interface Site Manager Time of day synchronization 170Operation, administration, and maintenance OAM features TOD parameters applicable to NP only TL1 Changes to Cross Connect AID parameter Hhminsec Unknown CLX RTRV-EQPT Behaviour Card in Slot 13 RTRV-EQPT Output TL1 event / log featureTL1 event exerciser CLX-13CTYPE=VTXOOS-AU, UEQ Log events Database change eventsInventory events Atag sequence numbers Topology enhancementsVT management option on STX equipped OPTera Metro VT management on a Upsr VTX Per-site dedicated STSSTX Per-site dedicated STS no VT loss in case of a fiber cut Virtual ring path-in-line and shared VT-managed STS STXW/STX VT#1 UPSR, 2 way STS-1 #1 Unprotected OM3500 180Operation, administration, and maintenance OAM features VT grooming on a Upsr VT grooming with dedicated STS at each site VT grooming with shared VT-managed STS DS1 DS3 EC1 184Operation, administration, and maintenance OAM features OM3500 VT#1, STS-1 #1 Collocated OPTera Metro 3000 NE and shared VT-managed STS EX1561p 188Operation, administration, and maintenance OAM features Physical subtending rings Upsr planning guidelines summaryGeneral guidelines VT grooming at an STS-managed OPTera Metro 3500 sitePage Hardware feature descriptions New hardware in OPTera Metro 3500 Release OPTera Metro 3500 hardware Extended Reach ZX Small Form Factor Pluggable SFP NTTP51DZ Shelves equipped with VTX-48 or VTX-48e circuit packs Shelves equipped with STX-192 circuit packs NTN476AH Operational temperature rangeOPTera Metro Shelf Assembly Universal Shelf NTN476DA OC-3 circuit packs OC-48 non-DWDM circuit packs OC-48 Dwdm circuit packs OC-48 Dwdm NTN442NB OC-48 ER Dwdm NTN408CWOC-48 Dwdm NTN442LF OC192 non-DWDM circuit packs Electrical tributary circuit packs NTTP51AA NTN433AANTN438DA NTTP51BD NTN433EA OPTera Packet Edge System circuit packsNTN433BB NTN433FA NTN414AA NTN438BACross-connect / synchronization circuit packs NTN414AB Power modules and BIPs Protection switching circuit packsNetwork / Shelf processors, and Ilan circuit packs Cooling unit assemblies Accessory shelvesModules NTN452CH NTN452EANTN452AH NTN452EH NTN452KA NTN452JANTN452JH NTN452NA NTN451MA LIFs and LOAMsNTN451BA NTN451BH LIF, Loam 20Hardware feature descriptions OPTera Metro 3500 Shelf Assembly NTN476DA Loam LIF DS1 NTN452AA and BNC 12-Port Front I/O module NTN452JABNC 12 port I/O EX1157p 24Hardware feature descriptions Air deflector Replaceable I/O modules Hardware feature descriptions Type / PEC Positions Transport slot Module type and slot positionsNTN476DA ADD / Drop DS1 1-28 Front I/O module NTN452AA DS1 29-56 Front I/O module NTN452CA DS1 29-84 Front I/O module NTN452EA BNC 12-Port Front I/O module NTN452JA 8xRJ-45 Front I/O module NTN452NA DS1 1-28 Front Enhanced I/O module NTN452AH DS1 29-56 Front Enhanced I/O module NTN452CH DS1 29-84 Front Enhanced I/O module NTN452EH BNC 12-Port Front Enhanced I/O module NTN452JH 8xRJ-45 Front Enhanced I/O module NTN452NH DS1 1-28 Rear I/O module NTN452BA DS1 29-56 Rear I/O module NTN452DA DS1 29-84 Rear I/O module NTN452FA 8xRJ-45 Rear I/O module NTN452HB Left OAM Loam NTN451MA, NTN451MH Common modulesBNC 12-Port Rear I/O module NTN452KA Colan Ilan Left interface LIF NTN451BA, NTN451BHLeft OAM Loam NTN451MA, NTN451MH ACO Left interface LIF NTN451BA, NTN451BH OPTera Metro 3500 Cooling unit assembly NTN458QA OPTera Metro 3500 Universal cooling unit assembly NTN458QH Universal power module NTN451HA Universal power module NTN451HAOPTera Metro 3000 breaker interface panel BIP NTN458RA Bay Alarms Power Input AlarmBreaker Alarm Alarm Circuits OPTera Metro 3500 BIP European deployment NTFW56BA Core circuit packs VTX equipped OPTera Metro 3500 shelf Core circuit packs STX-192 equipped OPTera Metro 3500 shelf Tributary circuit packs EX1474p OPTera Packet Edge circuit packs 2xGigE/FC-P2P and SFP interfaces PSC NPx, ILAN, PSC, and PSX circuit packsPSX Ilan STX-192 circuit pack NTN415AA External timing reference input signalsEquipping rules OC-48 STS OC48 STS DSM VTX-48 circuit pack NTN414AA Alarm LED definitionsLED name Color Description VTX-48e circuit pack NTN414AB, NTN414AH Extended shelf processor SPx NTN423BA, BH TL1 sessions Extended network processor NPx NTN424BA, BH Alarms and TbosReset button Section data communication channel Sdcc Alarms and provisioning data Ilan interface NTN425AA OC-192 optical interface circuit pack NTN445CB, DA STS-1 path trace for OC-192 Forward Error Correction FECSection trace for OC-192 Alarm Text or conditions +1 linear protection OC-192 protection switchingUpsr path protection Blsr protection 64Hardware feature descriptions STS-1 path trace for OC-48 OC-48 optical wavelength OC-48 circuit pack Wavelength Section trace for OC-48 Following table lists the OC-48 interface circuit pack LEDs OC-48 protection switching OC-48 STS optical interface circuit pack NTN440HA, KA, LA STS-1 path trace for OC-48 70Hardware feature descriptions Section data communication channel Sdcc Optical transmit Optical receive OC-12 Protection switchingUnidirectional path switched rings UPSRs +1 linear 74Hardware feature descriptions Multimode Interworking OC12x4 STS IR optical interface circuit pack NTN446CAParameters Value 76Hardware feature descriptions OC-3 optical interface circuit pack NTN401AA, DA OC-3 Protection switching Section data communication channel Sdcc OC-3x4 optical interface circuit pack NTN441AA, AC Equipping rules EC-1x3 circuit pack NTN436AA Protection switching EC-1x12 circuit pack NTN436DA EC-1x12 circuit packs do not support Sdcc channels DS1 mapper NTN430AA, BA DS1 I/O module types DS1 88Hardware feature descriptions DS3x12 / DS3x12e mapper NTN435AA, AH / NTN435BA DS3 alarms available only on DS3x12e mapperDS3 Path PMs Near-End available only on DS3x12e mapper DS3VTx12 mapper NTN435FA DS3/VT protection switching 2x100BT-P2P circuit pack NTN433AA 92Hardware feature descriptions Shelf Module Scenario description OPTera Packet Edge System 4x100BT circuit pack NTN433BB WAN OPTera Packet Edge System 4x100FX circuit pack NTN433EA, FA LEDs Color Description 98Hardware feature descriptions Hardware feature descriptions Protection switch controller PSC NTN412AA Protection switch extender PSX NTN413AA OMX + Fiber Manager 4CH NT0H32AE, BE, CE, DE, EE, FE, GE, HE OMX + Fiber Manager 4CH equipment drawer OMX shelf not required with OMX + Fiber Manager 4CH NTN449ZW OMX shelf NTN449ZW OMX Mounting bracket labels Letter Rack type Fiber manager NT0H57BB DS1 service module DSM shelf NTN407MA Multiple is DS1 service module DSM NTN407MA EX0959p DSM OAM Hardware Release 6 with cover off NTN313AA, AC DSM DS1x84 termination module TMDSM OAM Hardware Release 6 with cover on LED Name LED Color On condition description LOSPage OPTera Metro Multiservice Platform