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PTN运行维护篇目录1.1网络故障处理基本思路和方法 (3)1.1.1PTN与MSTP告警对比 (3)1.1.2常见告警故障处理方法 (5)1.1.3以太网业务丢包类故障处理方法 (7)1.1.4OAM/PING调试法 (7)1.1.5环回逐段定位法 (10)1.2PTN网络例行监控 (11)1.1 网络故障处理基本思路和方法PTN的组网、业务配置愈发复杂，需分组厂商网管尽快做好SDH－Like功能。
为尽快恢复业务，将检测的故障点最小化，需了解SDH原理、IP网络原理知识、告警信号流及告警产生机理、PTN设备和网管基本操作、常用仪表的基本操作，了解网络拓扑，业务配置，设备运行状态。
✓告警、性能分析法✓OAM/PING调试法✓环回法PTN对于Tunnel的故障可用MPLS OAM来检测，MPLS OAM包括CV/FFD、Ping和Traceroute。
通过CV（Connectivity Verification）/FFD（Fast Failure Detection）检测可以检测LSP的连通性。
CV检测和FFD检测的过程基本一致，其不同在于CV检测发送CV报文的频率固定为1帧/s并且不可设置，而FFD检测发送FFD报文的频率是可以自行定义的。
MPLS Ping/Traceroute为用户提供了发现LSP错误、并及时定位失效节点的机制。
MPLS Ping/Traceroute使用MPLS Echo Request和MPLS Echo Reply检测LSP的可用性。
MPLS Echo Request中携带需要检测的FEC（Forwarding Equivalence Class）信息，和其他属于此FEC的报文一样沿LSP发送，从而实现对LSP的检测。
为了更好的理解PTN，我们就把PTN与熟悉的SDH的业务层面告警类比一下，与大家共享。
1.1.1 PTN与MSTP告警对比对应于业务模型，PTN的告警分为物理层、数据链路层、Tunnel层、PW层、仿真业务层五个层次。
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ATN 905产品彩页华为技术有限公司ATN 905 是应用于小基站回传和EDD 产品概述任意环境安装： •ATN905室外款支持产品特点网络位置产品规格属性ATN905 (AC/DC)软件特性L2 特性支持 IEEE802.1q、IEEE802.1p、IEEE 802.3ad 及 IEEE 802.1ab •支持 STP/RSTP/MSTP、VLAN Switch•支持 G.8032•CPE ATN 905-C 支持CPE•L3特性支持 IPv4、IPv6、OSPFv2/V3、RIPv2、IS-IS/IS-ISv6、BGPv4/BGPV4+、IPv6 ACL/Telnet •支持动态ARP 和静态ARP表项•支持 VLAN IF 接口•QoS支持WRED、3级H-QoS •支持基于VLL/PWE3 QoS •支持ACL•保护支持 IP FRR、NQA、BFD for IGP、IPv4•支持 IEEE802ag、IEEE802.3AH、ITU-T Y.1731、临终遗言•室外款：属性ATN905A ATN905A-P ATN905A-V 交换容量6Gbps4Gbps4Gbps接口类型2*GE/FE (Combo),2*GE/FE(o)2*GE(o)1*GE/FE (Combo),2*GE/FE(e)1*GE(o),1*VDSL24*GE/FE(e)电源AC：90V ~ 260V AC：90V ~ 260V AC：90V ~ 260VPOE/3路POE1路130W POE；2路共享60W POE典型功耗15W带POE供电最大210W 15W满配重量 2.7kg 2.9kg 2.8kg外形尺寸 (W×D×H)250mm×180mm×52mm250mm×180mm×52mm300mm×135mm×60mm 温度-40°C ~ +65°C-40°C ~ +55°C-40°C ~ +65°C散热自然散热湿度5% RH ~ 95% RH，无凝结。
905U-1,2,3,4 Wireless Multi-I/OSimple to deploy, long‑range, reliable wireless I/O connectivityDescriptionThe ELPRO 905U Wireless Multi-I/O is a node that extendscommunications to sensors and actuators in local, remote, ordifficult-to-reach locations. Designed with a long-range, license-freeor licensed wireless transceiver, the ELPRO 905U module provides asimple-to-deploy solution to transfer process I/O signals reliably overlong distances or within an industrial plant.Capable of transferring analog or discrete I/O points in point-to-pointor point–to–multi-point situations. Each 905U product can alsoprovide repeater functionality to extend the distance of the networkand capture remote I/O points. The I/O is scalable using 115S serialexpansion units at each 905U unit.Features• 865–867 MHz/902–928 MHz frequency and 1W RF power• Link I/O inputs to single or multiple I/O outputs (peer to peer)• Reliable point–to–multi-point two-way communications combiningexception reporting, self-checking and data encryption• Multi-hop repeater function provides increased communicationdistance• Multiple I/O channels for monitoring and controlling field deviceswith set-point, pulse count, and rate available. Additional internalI/O points provided for health monitoring• Communication failure notification and diagnostics, including radiopath measurement, communications logging, and verification ofI/O values• Built-in low voltage AC/DC/battery power options, UPS batterycharger and solar regulator• User-friendly configuration softwareApplications• High-level alarms• Flow meter monitoring• Storage tank monitoring• Pipeline cathodic protection• Pump stop-start• Weather station reporting• Bearing condition monitoringT echnical Data EL-905U-1234Effective October 2018SpecificationsSPECIFICATION DESCRIPTIONTransmitter and ReceiverFrequency865–867 MHz a, 902–928 MHz b, 915–928 MHz c Transmit power1WTransmission Frequency hopping spread spectrum (FHSS)Modulation Frequency shift keyingReceiver sensitivity–106 ******** kbpsChannel spacing50 x 250 kHzData rate19.2 kbpsRange (LoS)20 miles (32 km) @ 4W ERIP d9.3 miles (15 km) @ 1W EIRP (other countries)Antenna connector 1 x female SMA standard polarityInput and OutputDigital input Voltage free/NPN, wetting current 0.5 mASurge protected (non-isolated)905U-1: 4905U-2: 4905U-3: 0905U-4: 4–16 inputs eDigital output (3)905U-1: 4 relay contacts, AC 50V: 5 AC/DC 30V: 2A905U-2: 1 FET output 30 Vdc/500 mA905U-3: 8 FET output 30 Vdc/500 mA905U-4: 4–16 FET outputs eAnalog input Floating differential inputs, common mode voltage 27V24 Vdc for external loops provided, digital filtering 1 second905U-1: 2 current, 4–20 mA, 15-bit resolution, 0.1% accuracy,over range indication 2–25 mA905U-2: 6 current, 0–20 mA, 12-bit resolution, 0.1% accuracy,over range indication 0–25 mAAnalog output Current sink to common, max loop voltage 27V, max. loopresistance 1000 Ohms905U-1: 2 current, 4–20 mA, 15-bit resolution, 0.1% accuracy,over range indication 0.5–25 mA905U-3: 8 current, 0–20 mA, 12-bit resolution, 0.1% accuracy,over range indication 0–20.5 mAPulse input As per digital input specifications aboveMax. pulse rate 1000 Hz, pulse width min. 5 ms905U-1: 1 pulse input, terminated at DI 1905U-2: 4 pulse inputs, terminated at DI 1–4905U-2: first DI/PI max. 1000 Hz, pulse width min. 0.5 ms905U-2: DI/PI 2, 3, 4 max. 100 Hz, pulse width 5 ms905U-4: 4 pulse inputs, terminated at DI 1–4905U-4: first digital inputs/pulse inputs max 1000 Hz, pulsewidth min. 0.5 ms. 2, 3, 4 DI/PIs max 100 Hz, pulse width 5 ms Pulse output As per FET digital outputs specifications aboveFET DO/PO 30 Vdc/500 mA, max pulse rate 100 Hz905U-1: 1 pulse output905U-3: 4 pulse outputs, terminated at DO 1–4905U-4: 4 pulse outputs, terminated at DO 1–4Serial PortRS-2329-pin DB-9 female connector (for programming use only)RS-4852-pin terminal block f, serial expansion 4000' (1.2 km) Data rate (bps)9600Serial settings7/8 data bits, no parity, 1 stop bitProtocols and ConfigurationSystem address Configurable system addressProtocols supported ELPRO WIBnet™ auto acknowledgement up to 4 retries, CRCerror checkingUser configuration E-series configuration utilityConfigurable parameters Individual I/O mappings, analog and digital debounce, update time, analog set points and sensitivities, output reset timesSecurity64-bit encryption on radio and serial SPECIFICATION DESCRIPTIONLED Indication and DiagnosticsLED indication Power/OK, I/O status, OK/module OK, TX, RXRefer to product manual for further information. Reported diagnostics RSSI, comms logging, I/O statusPower SupplyNominal supply12–24 Vac/15–30 Vdc: over-voltage/reverse power protected Average current draw At 12 Vdc: 85 mA+10 mA per active digital input+25 mA per active digital output2 x per analog I/O loop (mA)Transmit current draw350 ******* Vdc,250 mA@24 VdcBattery supply11.5–15.0 Vdc (battery supply volts internal I/O value) Battery chargingcircuit1.2–12 Ah battery: max. charge current 0.7A @ >12VSolar regulator Direct connection solar panel (to 30W)/solar battery 100 Ah Loop supply Internal DC/DC converter: 24 Vdc/150 mA current limited ComplianceEMC FCC Part 15RF (radio)FCC Part 15.247, RSS 210, AS/NZS4268Hazardous area CSA Class I, Division 2Safety EN 60950GeneralSize 5.1" x 7.3" x 2.4" (130 mm x 185 mm x 60 mm)Housing Extruded aluminumMounting DIN railTerminal blocks Removable, max. conductor 14 AWG 0.1 in2 (2.5 mm2) Temperature rating–40 to +140°F (–40 to +60°C)Humidity rating0–99%RH noncondensingWeight 2.2 lbs (1 kg)Note:N Specifications are subject to change.a Available in selected asian countriesb Configured for USc Configured for Australiad Typical maximum line-of-sight range (checkcountry regulations, single hop, repeaterswill extend range)e 905U-4 has 12 digital I/O which areselectable inputs or outputsf Max. distance 4000' (1.2 km)OrderingPRODUCT CODE DESCRIPTION FREQUENCY RF POWER 905U-1-900-1W Wireless I/O 4 DI, 4 DO,2 AI, 2 AO,1 P0902–928 MHz1W905U-1-866-1W Wireless I/O 4 DI, 4 DO,2 AI, 2 AO,1 P0865–867 MHz1W905U-2-900-1W Wireless I/O 4 DI, 1 DO,6 AI, 4 PI902–928 MHz1W905U-2-866-1W Wireless I/O 4 DI, 1 DO,6 AI, 4 PI865–867 MHz1W905U-3-900-1W Wireless I/O, 8 DO, 8 AO,4 PO902–928 MHz1W905U-3-866-1W Wireless I/O, 8 DO, 8 AO,4 PO865–867 MHz1W905U-4-900-1W Wireless I/O, 16 DIO,4 DO, 4 DI902–928 MHz1W905U-4-866-1W Wireless I/O, 16 DIO,4 DO, 4 DI865–867 MHz1W Note:N Available RF power and frequency may vary depending on country of application.2AccessoriesPRODUCT CODE DESCRIPTIONAntennas - 900 MHz DG900-1Whip antenna, SMA male, angle bracket,–2 dBi gain, 3' ( 1m) coaxial cableWH900-SMA Whip antenna, SMA male, –2 dBi gain CFD890EL Dipole antenna, SMA male, mounting bracket,2 dBi gain, 16' (5m) coaxial cableSG900EL Collinear antenna, N-type female, 5 dBi gain SG900-6Collinear antenna, N-type female, 8 dBi gain YU6-900Yagi antenna, N-type female, 9 dBi gain YU16-900Yagi antenna, N-type female, 15 dBi gain CablesCC3/10/20-SMACoaxial cable kit, 9.8' (3m)/32' (10m)/65' (20m), N-type to SMA CCTAIL-SMA-F/M Coaxial cable tail, 24" (600 mm), SMA to N-type female or maleSER-DB9Serial RS-232 cable, DB-9 male to DB-9 female straight throughPRODUCT CODE DESCRIPTIONSurge Diverters CSD-SMA-2500SMA surge diverter for use with CC10/CC20–SMACSD-N-6000Coaxial surge diverter, bulkhead N female to N femaleMA15/D/1/SI MA15/D/2/S1Power supply surge diverter, 110 Vdc/15A Power supply surge diverter, 240 Vac/15A IOP32DSignal surge diverter, 2-wire/4-wirePower SuppliesPS-DINAC-12DC-OK DIN rail power supply, 100–250 Vac,12 Vdc/2.5APSG60E DIN rail power supply, 85–264 Vac,24 Vdc/2.5AMounting Brackets BR-COL-KIT Mounting bracket kit for collinear antenna BR-YAG-KIT Mounting bracket kit for Yagi antennaELPRO Technologies is a registered trademark.All other trademarks are property pr of their respective owners.ELPRO Technologies9/12 Billabong StreetStafford Queensland 4053 Australia Telephone:Global: +61 7 3352 8600USA: +1 855 443 5776***************.au .au© 2018 ELPRO Technologies All Rights ReservedPublication No. EL-905U-1234 October2018。
