OptiX OSN 8800 Intelligent Optical Transport Platform V100R010C00. Product Overview. Выпуск 01 Дата HUAWEI TECHNOLOGIES CO., LTD.

Transcription

1 OptiX OSN 8800 Intelligent Optical Transport Platform V100R010C00 Выпуск 01 Дата HUAWEI TECHNOLOGIES CO., LTD.

2 2015. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd. Trademarks and Permissions and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied. The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied. Huawei Technologies Co., Ltd. Address: Huawei Industrial Base Bantian, Longgang Shenzhen People's Republic of China Website: support@huawei.com i

3 Contents Contents 1 Product Specifications Typical Networking Service Types System Architecture Hardware Architecture Cabinet Introduction OptiX OSN 8800 T64 Subrack OptiX OSN 8800 T32 Subrack OptiX OSN 8800 T16 Subrack OptiX OSN 8800 Universal Platform Subrack Structure Slot Description Product Features Gbit/s Gbit/s Coherent Solution Gbit/s Metro Solution OTN + ROADM Feature Flexible ROADM Application PID Feature Redundancy and Protection Network Level Protection (OTN) Network Level Protection (OCS) Network Level Protection (Ethernet and Packet) Equipment Level Redundancy Automatic Optical Power Management ASON Feature Submarine Features Flexible Grid MUX/DEMUX Operation and Maintenance Optical Doctor...39 ii

4 Contents System Overview Glance at OD Functions Fiber Doctor System Network Management...51 iii

5 Product Specifications 1 Product Specifications Table 1-1 describes the product appearance and highlights for OptiX OSN Table 1-1 Product appearance and highlights for OptiX OSN 8800 Specifications OptiX OSN 8800 T16 OptiX OSN 8800 T32 a OptiX OSN 8800 T64 a Product appearance Dimensions (mm) 498 (W) x 295 (D) x 450 (H) 498 (W) x 295 (D) x 900 (H) 498 (W) x 580 (D) x 900 (H) Number of slots for service boards Switch Optical 1 to 20-degree ROADM Electrical 1.6T ODUk(k=0, 1, 2, 2e, 3, 4, flex) 640G VC-4 and 20G VC-3/VC G Packet Enhanced subrack: 3.2T ODUk(k=0, 1, 2, 2e, 3, 3e, 4, flex) 1.28T VC-4 and 80G VC-3/VC T Packet General subrack: 2.56T ODUk(k=0, 1, 2, 2e, 3, 4, flex) 1.28T VC-4 and 80G VC-3/VC G Packet Enhanced subrack: 6.4T ODUk(k=0, 1, 2, 2e, 3, 4, flex) 1.28T VC-4 and 80G VC-3/VC-12 General subrack: 2.56T ODUk(k=0, 1, 2, 2e, 3, flex) 1.28T VC-4 and 80G VC-3/VC-12 1

6 Product Specifications Specifications OptiX OSN 8800 T16 OptiX OSN 8800 T32 a OptiX OSN 8800 T64 a Wavelength (max) DWDM: 80-ch, CWDM: 8-ch Wavelength range DWDM: nm to nm (Band-C, ITU-T G.694.1) CWDM: 1471 nm to 1611 nm (Band S+C+L, ITU-T G.694.2) Max. rate per channel Service types supported Line rate Supported pluggable optical modules Max. capacity per PID group Topology 100Gbit/s (OTU4) SDH, SONET, Ethernet, SAN, OTN, Video 2.5 Gbit/s, 10 Gbit/s, 40 Gbit/s, 100 Gbit/s esfp, SFP+, XFP, CFP 200 Gbit/s Point-to-point, chain, star, ring, ring-with-chain, tangent ring, intersecting ring, mesh Redundanc y and protection Network level protection (OTN) Network level protection (OCS) Optical line protection, intra-board 1+1 protection, client 1+1 protection, ODUk SNCP, tributary SNCP, SW SNCP, ODUk SPRing protection, OWSP Linear MSP, MSP ring, transoceanic MSP ring, SNCP, SNCTP Network level protection (Ethernet and packet) DBPS, DLAG, ERPS, LAG, LPT, MC-LAG, MSTP, PW APS, STP and RSTP, Tunnel APS, VLAN SNCP DBPS, DLAG, ERPS, LAG, LPT, MC-LAG, MSTP, PW APS, STP and RSTP, Tunnel APS, VLAN SNCP DBPS, DLAG, ERPS, LAG, LPT, MC-LAG, MSTP, STP and RSTP, VLAN SNCP Equipment level protection Optical power management Power redundancy, fan redundancy, cross-connect board redundancy, system control and communication board redundancy, centralized clock board redundancy, AUX Board 1+1 Redundancy ALS, AGC, ALC, APE, IPA, OPA Synchronization Synchronous Ethernet clock IEEE 1588v2 2 Mbit/s or 2 MHz (with the SSM function), ITU-T G.703-compliant external clock source External time source (1PPS+TOD) ASON An OTN network supports the Optical-Layer ASON and electrical-layer ASON. An OCS network supports the SDH ASON feature. NOTE The OptiX OSN 8800 T16 does not support the SDH ASON feature. Submarine Features Nominal working voltage Supports application of C band in submarine scenarios. -48 V DC/-60 V DC 2

7 Product Specifications Specifications OptiX OSN 8800 T16 OptiX OSN 8800 T32 a OptiX OSN 8800 T64 a Typical configuration power consumption OTN subrack: 700W OCS subrack: 821W Enhanced 8800 T32 OTN subrack: 3300W OCS subrack: 1791W General 8800 T32 OTN subrack: 2000W OCS subrack: 1282W Maximum subrack power 1800W Enhanced 8800 T32: consumption b 4800W General 8800 T32: 4800W Operation environment Mean time to repair (MTTR) Mean time between failures (MTBF) Subrack temperature: Enhanced 8800 T64 OTN subrack: 6000W OCS subrack: 2135W General 8800 T64 OTN subrack: 3700W OCS subrack: 1748W Enhanced 8800 T64: 9600W General 8800 T64: 9600W Long-term operation: 5 C (41 F) to 45 C (113 F) Short-term operation: -5 C (23 F) to 55 C (131 F) Relative humidity: Long-term operation: 5% to 85% Short-term operation: 5% to 95% 4 hours 4 hours 4 hours years years years a: There are two types of OptiX OSN 8800 T32 and 8800 T64 subracks: general and enhanced. Enhanced and general subracks are the same in appearance and technical specifications except for electrical cross-connect capacities and consumption. b: The maximum subrack power consumption refers to the theoretical power consumption obtained when boards with the highest power consumption are installed in every slot on the subrack. 3

8 Typical Networking 2 Typical Networking The OptiX OSN 8800 Intelligent Optical Transport Platform (OptiX OSN 8800 for short) is a new generation of intelligent MS-OTN product. It is a future-proof product launched to address the IP-based metro network development trend. Using a new architecture, the product supports dynamic optical-layer grooming and flexible electrical-layer grooming. In addition, the product features high integration and reliability and supports multi-service transmission. The OptiX OSN 8800 is used for long haul backbone, area backbones, local networks, metropolitan convergence layers and metropolitan core layers. The OptiX OSN 8800 uses dense wavelength division multiplexing (DWDM) or coarse wavelength division multiplexing (CWDM) technologies to achieve transparent transmission with multiple services and large capacity. Figure 2-1 Typical networking application 4

9 Typical Networking NOTE Packet services are supported at the backbone core layer only when all the equipment at this layer is OSN 8800 T32. 5

10 Service Types 3 Service Types The OptiX OSN 8800 supports synchronous digital hierarchy (SDH) services, synchronous optical network (SONET) services, Ethernet services, storage area network (SAN) services, optical transmission network (OTN) services, and video services. Table 3-1 lists the service types and rates that the OptiX OSN 8800 supports. Table 3-1 Service types and rates that the OptiX OSN 8800 supports Service Category Service Type Service Rate Reference Standard SDH STM Mbit/s ITU-T G.707 STM Mbit/s ITU-T G.691 STM Gbit/s ITU-T G.957 ITU-T G.693 STM Gbit/s ITU-T G.783 STM Gbit/s ITU-T G.825 SONET OC Mbit/s GR-253-CORE GR- OC Mbit/s 1377-CORE ANSI T1.105 OC Gbit/s Ethernet service OC-192 OC Gbit/s Gbit/s FE (optical signal) Interface rate: 125 Mbit/s Service rate: 100 Mbit/s FE (electrical signal) Interface rate: 100 Mbit/s Service rate: 100 Mbit/s IEEE 802.3u 6

11 Service Types Service Category Service Type Service Rate Reference Standard GE(optical signal) Interface rate: 1.25 Gbit/s Service rate: 1 Gbit/s GE (electrical signal) Interface rate: 1 Gbit/s Service rate: 1 Gbit/s IEEE 802.3z 10GE WAN 9.95 Gbit/s IEEE 802.3ae 10GE LAN Gbit/s 40GE Gbit/s IEEE 802.3ba 100GE Gbit/s SAN service ETR 16 Mbit/s IBM GDPS CLO 16 Mbit/s ( Geographically Dispersed Parallel Sysplex) Protocol FDDI 125 Mbit/s ISO 9314 ESCON 200 Mbit/s ANSI X3.296 FICON FICON Express FC100 FC200 FC400 FC800 FC1200 FICON4G FICON8G FICON10G 1.06 Gbit/s 2.12 Gbit/s 1.06 Gbit/s 2.12 Gbit/s 4.25 Gbit/s 8.5 Gbit/s Gbit/s 4.25 Gbit/s 8.5 Gbit/s Gbit/s ANSI X3.230 ANSI X3.303 ISC 1G 1.06 Gbit/s IBM GDPS ISC 2G 2.12 Gbit/s ( Geographically Dispersed Parallel Sysplex) Protocol InfiniBand 2.5G 2.5 Gbit/s InfiniBand TM InfiniBand 5G 5 Gbit/s Architecture Release OTN service OTU Gbit/s ITU-T G.709 OTU Gbit/s ITU-T G OTU2e Gbit/s GR-2918-CORE OTU Gbit/s 7

12 Service Types Service Category Video service Service Type Service Rate Reference Standard OTU Gbit/s DVB-ASI 270 Mbit/s EN SDI 270 Mbit/s SMPTE 259M HD-SDI 1.49 Gbit/s SMPTE 292M HD-SDIRBR 1.49/1.001 Gbit/s 3G-SDI 2.97 Gbit/s SMPTE 424M 3G-SDIRBR 2.97/1.001 Gbit/s FE: Fast Ethernet GE: Gigabit Ethernet ESCON: Enterprise System Connection FICON: Fiber Connect FC: Fiber Channel DVB-ASI: Digital Video Broadcast-Asynchronous Serial Interface SDI: Serial Digital Interface. As specified in the SMPTE-259M, SDI is also called SD- SDI. HD-SDI: High Definition-Serial Digital Interface Signal 3G-SDI: 3G Serial Digital Interface 8

13 System Architecture 4 System Architecture The OptiX OSN 8800 uses the L0 + L1 + L2 architecture. Wavelength multiplexing/ demultiplexing and flexible optical cross-connection is implemented at Layer 0, ODUk and VC service grooming is implemented at Layer 1 and ethernet/mpls-tp switching is implemented at Layer 2. Figure 4-1 System architecture 9

14 Hardware Architecture 5 Hardware Architecture About This Chapter 5.1 Cabinet Introduction Huawei provides three types of ETS compliant cabinets: N66B, N63B, and N63B- 2m. 5.2 OptiX OSN 8800 T64 Subrack The OptiX OSN 8800 T64 subrack provide 93 slots. 5.3 OptiX OSN 8800 T32 Subrack The OptiX OSN 8800 T32 subrack provide 50 slots. 5.4 OptiX OSN 8800 T16 Subrack The OptiX OSN 8800 T16 subrack provide 25 slots. 5.5 OptiX OSN 8800 Universal Platform Subrack An OptiX OSN 8800 universal platform subrack can be installed in a 19-inch cabinet or an ETSI cabinet (N63B or N66B). 10

15 Hardware Architecture 5.1 Cabinet Introduction Huawei provides three types of ETS compliant cabinets: N66B, N63B, and N63B- 2m. Paramete r N66B (ETSI 600 mm Cabinet) N63B (ETSI 300 mm Cabinet) N63B-2m (ETSI 300 mm Cabinet) Appearanc e Height extension frame (optional) a None Doors/ Panels Door keys Dimension s (H x W x D) Front and rear doors: They can be disassembled. A key is provided for unlocking each of the doors. Side panels: They are secured with screws and can be disassembled. Front door: The door can be disassembled. A key is provided for unlocking the door. Rear and side panels: They are secured with screws. Only the side panels can be disassembled. The door keys for all cabinets are the same. Not equipped with a height extension frame: 2200 mm (86.6 in.) x 600 mm (23.6 in.) x 600 mm (23.6 in.) Equipped with a height extension frame: 2600 mm (102.4 in.) x 600 mm (23.6 in.) x 600 mm (23.6 in.) Not equipped with a height extension frame: 2200 mm (86.6 in.) x 600 mm (23.6 in.) x 300 mm (11.8 in.) Equipped with a height extension frame: 2600 mm (102.4 in.) x 600 mm (23.6 in.) x 300 mm (11.8 in.) Front door: The door can be disassembled. A key is provided for unlocking the door. Rear and side panels: They are secured with screws. Only the side panels can be disassembled mm (78.74 in.) x 600 mm (23.6 in.) x 300 mm (11.8 in.) 11

16 Hardware Architecture Paramete r N66B (ETSI 600 mm Cabinet) N63B (ETSI 300 mm Cabinet) N63B-2m (ETSI 300 mm Cabinet) Weight Standard working voltage Working voltage range Not equipped with a height extension frame: 120 kg (264.6 lb.) Equipped with a height extension frame: 130 kg (286.6 lb.) -48 V DC or -60 V DC Not equipped with a height extension frame: 60 kg (132.3 lb.) Equipped with a height extension frame: 66 kg (145.5 lb.) -48 V DC power source: -40 V to V -60 V DC power source: -48 V to -72 V 54.5 kg (120.2 lb.) a: A 400-mm-high extension frame can be placed at the top of the N66B or N63B cabinet, increasing the height of the cabinet to 2600 mm. 5.2 OptiX OSN 8800 T64 Subrack The OptiX OSN 8800 T64 subrack provide 93 slots. Slots of the OptiX OSN 8800 T64 subrack are shown in Figure 5-1. Figure 5-1 Slots of the OptiX OSN 8800 T64 subrack Front Back Paired slots For one-slot boards, the paired slots must be configured as follows: slots IU1 and IU2, slots IU3 and IU4, and so on. For two-slot boards, the paired slots must be configured as follows: slots IU1 to IU2 and slots IU3 to IU4, slots IU5 to IU6 and slot s IU7 to IU8, and so on. For four-slot boards, the paired slots must be configured as follows: slots IU1 to IU4 and slots IU5 to IU8, slots IU11 to IU14 and slots IU15 to IU18, and so on. 12

17 Hardware Architecture : houses service boards and supports service cross-connections. Pair slots refer to a pair of slots whose resident boards' overhead can be processed by the buses on the backplanes. In a general OptiX OSN 8800 T64 subrack, IU73 and IU84 are reserved for future use, and IU72 and IU83 are used to house AUX boards. In an enhanced OptiX OSN 8800 T64 subrack, IU72 and IU83 are used to house the active AUX boards, and IU73 and IU84 are used to house the standby AUX boards. NOTE Only the TN52AUX board supports 1+1 backup in an enhanced subrack. IU77 is reserved for future use. IU9 and IU43 are reserved for the cross-connect board. Enhanced OptiX OSN 8800 T64 subrack: TNK2UXCT or TNK4XCT. General OptiX OSN 8800 T64 subrack: TNK4XCT or TNK2XCT. IU10 and IU44 are reserved for the cross-connect board. Enhanced OptiX OSN 8800 T64 subrack: TNK2USXH, TNK4SXH or TNK4SXM. General OptiX OSN 8800 T64 subrack: TNK4SXH, TNK2SXH, TNK4SXM or TNK2SXM. The following table provides the slots for housing active and standby boards of the subrack. Board PIU SCC STG SXM/SXH/ USXH XCT/UXCT TN52AUX Slots for Active and Standby Boards General OptiX 8800 T64: IU69 & IU78, IU70 & IU79, IU80 & IU88, and IU81 & IU89 Enhanced OptiX 8800 T64: IU69 & IU89, IU70 & IU88, IU78 & IU81, and IU79 & IU80 IU74 & IU85 IU75 & IU86 IU10 & IU44 IU9 & IU43 Enhanced OptiX 8800 T64: IU72 & IU73, IU83 & IU OptiX OSN 8800 T32 Subrack The OptiX OSN 8800 T32 subrack provide 50 slots. 13

18 Hardware Architecture Slots of the OptiX OSN 8800 T32 subrack are shown in Figure 5-2. Figure 5-2 Slots of the OptiX OSN 8800 T32 subrack Paired slots For one-slot boards, the paired slots must be configured as follow s: slots IU1 and IU2, slots IU3 and IU4, and so on. For tw o-slot boards, the paired slots must be configured as follow s: slots IU1 to IU2 and slots IU3 to IU4, slots IU5 to IU6 and slots IU7 to IU8, and so on. For four-slot boards, the paired slots must be configured as follow s: slots IU1 to IU4 and slots IU5 to IU8, slots IU12 to IU15 and slots IU16 to IU19, and so on. : houses service boards and supports service cross-connections. Pair slots refer to a pair of slots whose resident boards' overhead can be processed by the buses on the backplanes. Slot IU43 in a general OptiX OSN 8800 T32 is reserved for future use. Slot IU41 and slot IU43 in an enhanced OptiX OSN 8800 T32 subrack are used to house the active and standby AUX boards, respectively. 14

19 Hardware Architecture NOTE Only the TN52AUX board supports 1+1 backup in an enhanced subrack. IU9 and IU10 are reserved for the cross-connect board: UXCH, UXCM, XCH or XCM The following table provides the slots for housing active and standby boards of the subrack. Board PIU SCC STG XCH/XCM/ UXCH/UXCM TN52AUX Slots for Active and Standby Boards IU39 & IU45 and IU40 & IU46 IU28 & IU11 IU42 & IU44 IU9 & IU10 Enhanced OptiX 8800 T32: IU41 & IU OptiX OSN 8800 T16 Subrack The OptiX OSN 8800 T16 subrack provide 25 slots. Slots of the OptiX OSN 8800 T16 subrack are shown in Figure 5-3. Figure 5-3 Slots of the OptiX OSN 8800 T16 subrack 15

20 Hardware Architecture Paired slots For one-slot boards, the paired slots must be configured as follows: slots IU1 and IU2, slots IU3 and IU4, and so on. For two-slot boards, the paired slots must be configured as follows: slots IU1 to IU2 and slots IU3 to IU4, slots IU5 to IU6 and slots IU7 to IU8, and so on. For four-slot boards, the paired slots must be configured as follows: slots IU1 to IU4 and slots IU5 to IU8, slots IU11 to IU14 and slots IU15 to IU18. : houses service boards and supports service cross-connections. Pair slots refer to a pair of slots whose resident boards' overhead can be processed by the buses on the backplanes. IU9 and IU10 are reserved for the TN16UXCM/TN16XCH/TN16SCC or for the other service boards. NOTE Slots IU9 and IU10 can be used to house service boards only when the OptiX OSN 8800 T16 functions as a slave subrack. If slots IU9 and IU10 are used to house service boards, install a special filler panel in each slot first The following table provides the slots for housing active and standby boards of the subrack. Board AUX TN96EOW PIU TN16UXCM/ TN16XCH/ TN16SCC Slots for Active and Standby Boards IU21 & IU22 IU22 NOTE TN96EOW can be housed only in a master subrack. When slot IU22 houses a TN96EOW board, only one AUX board is required and is inserted in slot IU21. AUX spare boards need to be available at a site with only one AUX board so that the AUX board can be replaced immediately once it is faulty. In a subrack without a TN96EOW board, two AUX boards must be configured. IU20 & IU23 IU9 & IU OptiX OSN 8800 Universal Platform Subrack An OptiX OSN 8800 universal platform subrack can be installed in a 19-inch cabinet or an ETSI cabinet (N63B or N66B) Structure 16

21 Hardware Architecture Subracks are the basic working units of the OptiX OSN 8800 universal platform subrack. The OptiX OSN 8800 universal platform subrack can operate with an independent DC or AC power supply. A universal platform subrack supports two mounting options: ETSI cabinet mounting and 19-inch rack mounting. Figure 5-4 shows the structure of the subrack. Figure 5-4 OptiX OSN 8800 universal platform subrack structure diagram 1. LAMP TEST Button 2. Indicator/Interface area 3. RESET Button 4. SubRACK_ID LED indicator 5. Board area 6. Fiber cabling area 7. Fan tray assembly 8. Air filter 9. Mounting ear 10. Fiber spool NOTE The interface area is behind the indicator panel in the upper part of the subrack. Remove the indicator panel before you connect cables. 17

22 Hardware Architecture LAMP TEST button: tests whether the indicators on the subrack are normal. After you press the button, all the indicators should be lit. It has the same function as the LAMP TEST button on the SCC board. Indicators: indicate the running status and alarm status of the subrack and EFI board software. RESET button: warm resets the EFI board. SubRack_ID LED indicator: displays the master/slave relationships between subracks when multiple subracks are cascaded. It has the same function as the subrack ID LED on the front panel of the SCC board. "0" indicates that the subrack housing the SCC board is the master subrack, "EE" indicates that the subrack ID is incorrect or the subrack ID fails to be obtained, and other values indicate slave subracks. For the meanings of other values displayed on the LED, see DIP Switches on the TN18EFI Board. Board area: All service boards are installed in this area. 18 slots are available. Fiber cabling area: Fiber jumpers from the ports on the front panel of each board are routed to the fiber cabling area before being routed on a side of the open rack. Fan tray assembly: Fan tray assembly contains eight fans that provide ventilation and heat dissipation for the subrack. Air filter: It protects the subrack from dust in the air and requires periodic cleaning. Mounting ears: The mounting ears attach the subrack in the cabinet. Fiber spool: Rotable fiber spools are on two sides of the subrack. Extra fibers are coiled in the fiber spool on the open rack side before being routed to another subrack. The interface area provides functional interfaces, such as management interface, intersubrack communication interface, alarm output and cascading interface, network management interface, alarm input and output interface. It is behind the subrack indicator panel Slot Description The OptiX OSN 8800 universal platform subrack provides 20 slots. Slots of the subrack are shown in Figure 5-5. Figure 5-5 Slots of the subrack (DC power) 18

23 Hardware Architecture Paired slots Mutual backup For one-slot boards, the paired slots must be configured as follow s: slots IU1 and IU2, slots IU3 and IU4, and so on. For tw o-slot boards, the paired slots must be configured as follow s: slots IU1 to IU2 and slots IU3 to IU4, slots IU5 to IU6 and slots IU7 to IU8, and so on. For four-slot boards, the paired slots must be configured as follow s: slots IU1 to IU4 and slots IU5 to IU8, slots IU9 to IU12 and slots IU13 to IU16. Figure 5-6 Slots of the subrack (AC power) Paired slots Mutual backup 19

24 Hardware Architecture For one-slot boards, the paired slots must be configured as follow s: slots IU1 and IU2, slots IU3 and IU4,, slots IU13 and IU14. For tw o-slot boards, the paired slots must be configured as follow s: slots IU1 to IU2 and slots IU3 to IU4, slots IU5 to IU6 and slots IU7 to IU8, slots IU9 to IU10 and slots IU11 to IU12. For four-slot boards, the paired slots must be configured as follow s: slots IU1 to IU4 and slots IU5 to IU8. : houses service boards. Pair slots refer to a pair of slots whose resident boards' overhead can be processed by the buses on the backplanes. When a universal platform subrack serves as a master subrack, the subrack can be provisioned with two or one SCC board. When two SCC boards are provisioned, they are in mutual backup and are inserted in slots IU1 and IU2. When only one SCC board is provisioned, it can be inserted in either slot IU1 or IU2. When the SCC board is inserted in slot IU1, slot IU2 can be used to hold a service board. When the SCC board is inserted in slot IU2, slot IU1 cannot be used to hold a service board. When the universal platform subrack serves as a slave subrack, the SCC board cannot be configured. In this case, slots IU1 and IU2 are used to hold service boards. NOTE The IEEE 1588v2 function is not supported by all services boards or ST2 boards in slots 3 and 4 in an OptiX OSN 8800 universal platform subrack. 20

25 Product Features 6 Product Features About This Chapter Gbit/s 6.2 OTN + ROADM Feature The OTN + ROADM feature cross-connects a client service in any optical direction while ensuring high bandwidth utilization. 6.3 Flexible ROADM Application In the beyond 100G system, flexible ROADM supports flexible grid bandwidth grooming in addition to the 50 GHz and 100 GHz bandwidth grooming supported by traditional ROADM. In other words, flexible ROADM supports flexible allocation and grooming of n x 12.5 GHz bandwidth. 6.4 PID Feature PID helps to effectively eliminate bandwidth and O&M bottlenecks on a WAN, leveraging the features such as large capacity, high integration, versatile multi-service access, small size, and environment-friendly design. 6.5 Redundancy and Protection The OptiX OSN 8800 provides abundant equipment-level protection and network-level protection. 6.6 Automatic Optical Power Management 6.7 ASON Feature The automatically switched optical network (ASON) is a new generation of the optical transmission network. The ASON software provided by Huawei can be applied to the OptiX OSN 8800 to support the evolution from a traditional network to an ASON network. Such evolution complies with the ITU and IETF ASON/GMPLS-related standards. 6.8 Submarine Features 21

26 Product Features Gbit/s Huawei provides the 100 Gbit/s coherent transmission solution and 100 Gbit/s Metro solution Gbit/s Coherent Solution The OptiX OSN 8800 systems provide 40/80 x 100 Gbit/s transmission solution. By using the edge-cutting modulation formats and coherent detection technology, the OptiX OSN 8800 supports ultra long-haul transmission with high OSNR by overcoming physical limitations on 100 Gbit/s transmission, such as chromatic dispersion (CD), polarization mode dispersion (PMD), and non-linear effects. Figure 6-1 shows the typical application of the 100 Gbit/s transmission solutions. Figure 6-1 Typical application of 100 Gbit/s transmission solution The unique technical advantages of Huawei's coherent 100 Gbit/s transmission solution allow for ultra long-haul transmission, simplified network structure, high bandwidth utilization, and smooth upgrade. Ultra Long-Haul Transmission Huawei 100 Gbit/s coherent transmission solution uses multiple technologies, such as epdm +QPSK modulation, coherent detection, FEC and Hybrid OA, to achieve ultra-longhaul (ULH) transmission without electrical regeneration. epdm+qpsk modulation These modulation formats decrease the baud rate of an optical signal by half, while keeping the line rate unchanged. As a result, they reduce the spectral width of the optical signal by half, overcoming the bandwidth limitations of transmission devices. Coherent detection This technology provides for a better OSNR and receiver sensitivity than those in a non- coherent system. 22

27 Product Features FEC technology Huawei coherent transmission solutions support soft-decision FEC (SDFEC),SDFEC2 and hard-decision FEC (HFEC) schemes. Using advanced algorithms, Huawei coherent solutions offer higher net coding gain and thus extends the transmission distance. Hybrid optical amplifier technology Huawei has specifically developed hybrid OA boards (RAU) for coherent systems. Compared with common OA boards, the RAU boards have a smaller noise figure and provide for longer transmission distance, which substantially reduces the number of electrical regenerators. Figure 6-2 Ultra-Long-Haul Transmission of Coherent Transmission System Simplified network architecture Huawei coherent transmission solution simplifies network architecture and design, and reduces network OPEX owing to its DCM-free design, high PMD tolerance, and simplified ROADM architecture. Figure 6-3 Simplified network architecture of the coherent transmission system 23

28 Product Features High bandwidth utilization Huawei coherent transmission solution supports various service types and data rates. Received services of different types are encapsulated into ODUk (k=0,1, 2, 2e, 3, 4, flex) signals using the OTN technology, and groomed and provisioned through centralized OTN cross- connections. Bandwidth sharing, to the maximum extent, ensures high bandwidth utilization and reduces the transmission cost per bit. Figure 6-4 High bandwidth utilization of the coherent transmission system Low Latency Due to low latency, Huawei coherent transmission equipment is especially suitable for transport networks providing dedicated transport pipes for various business services, such as financial, data center application, and cloud computing that allow for very low latency. 24

29 Product Features Huawei advanced FEC technology provides optimal net coding gain while introducing extremely low latency. Huawei coherent boards are equipped with DSP chips, which have superior performance in CD and PMD compensation. Therefore, DCMs are no longer required in new 100G networks, which not only reduces the network construction cost but also eliminates the latency of the DCMs Gbit/s Metro Solution Non-coherent Solution The 100 Gbit/s metro solution is a non-coherent transmission solution and mainly applies to short-reach transmission scenarios, such as data center networks. The NS4M and LSCM boards support 100 Gbit/s metro solution. As shown in Figure 6-5, the boards use four wavelengths to transmit one OTU4 signal and employ the HFEC scheme to improve OSNR performance, achieving 100 Gbit/s metro transmission. Figure 6-5 Typical application of the 100 Gbit/s non-coherent metro solution Compared with the 100 Gbit/s coherent transmission solution, the 100 Gbit/s metro solution has the following features: Low cost Low power consumption Low latency 6.2 OTN + ROADM Feature The OTN + ROADM feature cross-connects a client service in any optical direction while ensuring high bandwidth utilization. 25

30 Product Features Figure 6-6 illustrates how OTN and ROADM effectively transmit client services. A tributary board receives client services at any bit rate. After OTN mapping and ODUk cross-connection are complete, the client signals are flexibly cross-connected on the electrical layer and share bandwidth. A line board then outputs the signals over different wavelengths. Along the optical cross-connections on the ROADM board, the signals over different wavelengths can be transmitted in any optical direction. If the signals in an optical direction do not need to be locally terminated, they can be directly transmitted to another optical direction through the optical cross-connections on the ROADM board. Figure 6-6 OTN + ROADM application 6.3 Flexible ROADM Application In the beyond 100G system, flexible ROADM supports flexible grid bandwidth grooming in addition to the 50 GHz and 100 GHz bandwidth grooming supported by traditional ROADM. In other words, flexible ROADM supports flexible allocation and grooming of n x 12.5 GHz bandwidth. 26

31 Product Features The future beyond 100G system requires more flexible spectrum allocation for high-rate optical signals and different bandwidths for signals in different modulation formats. The current ROADM technology uses the fixed grid technique, in which the bandwidth is fixed to 50 or 100 GHz. Hence, this technique cannot provide flexible bandwidth allocation. Flexible ROADM uses the flexible grid technique to allocate different bandwidths for different signals, improving spectrum utilization and addressing the flexible signal grooming requirements of future beyond 100G systems. Flexible ROADM is compatible with existing networks and supports fixed 50 GHz and 100 GHz bandwidth defined in ITU-T Recommendations. Figure 6-7 shows the networking of an example 2-degree flexible ROADM. Flexible grid wavelengths are received, and the bandwidth of the wavelengths is not fixed to 50 or 100 GHz but can be configured. Flexible ROADM allocates different bandwidths for different signals and grooms the signals to the specified direction based on network configurations. Figure 6-7 Networking of a flexible ROADM NOTE OTU boards that use the flexible grid technique will be provided in future versions. 6.4 PID Feature PID helps to effectively eliminate bandwidth and O&M bottlenecks on a WAN, leveraging the features such as large capacity, high integration, versatile multi-service access, small size, and environment-friendly design. 27

32 Product Features PID(NPS4E/NPS4) On a WAN, a 100G/200G aggregation ring based on PID boards only is recommended, eliminating commissioning while enabling quick service provision. At the OTN aggregation layer, 13 to 20 aggregation rings can be deployed with two to four NEs in each ring. A PID board (s) is used on each NE's line side. Build a 100G/200G network using PID groups as required. Figure 6-8 shows the details. Figure 6-8 Typical application(nps4e/nps4) In Figure 6-8, service 1 is received through the client-side tributary board and is converted into an ODUk signal. Then the ODUk signal is cross-connected to the PID board by the cross-connect board and is finally converted into an OTU4 optical signal before it is sent to the east direction on the WDM side. Service 2 is received by the west PID board. After the OTUk-to-ODUk conversion is performed, the signal is cross-connected to the east PID board by the cross-connect board. After the ODUk-to-OTU4 conversion, the signal is sent to the east direction on the WDM side. 6.5 Redundancy and Protection 28

33 Product Features The OptiX OSN 8800 provides abundant equipment-level protection and network-level protection Network Level Protection (OTN) The OptiX OSN 8800 provides various types of network level protection (OTN), as listed in Table 6-1. Table 6-1 Network Level Protection (OTN) Protection Optical Line Protection Intra-Board 1+1 Protection Client 1+1 Protection ODUk SNCP Tributary SNCP SW SNCP ODUk SPRing protection OWSP Description It uses the dual fed and selective receiving function of the OLP board to protect line fibers between adjacent stations by using diverse routing. It uses the dual fed and selective receiving function of the OTU/OLP/ DCP/QCP board to protect the OCh fibers by using diverse routing. It uses the dual fed and selective receiving function of the OLP/DCP/ SCS/QCP board to protect the OTU and the OCh fibers. It uses the dual fed and selective receiving function of the electrical layer grooming to protect the line board and the OCh fibers. The cross-connect granularity is ODUk signals. Protects the tributary service by using the dual-fed and selectivelyreceiving function at the electrical cross-connect layer. The crossconnect granularity is ODUk signals. The SW SNCP protection uses intra-board cross-connections on the TOM board to implement the dual fed and selective receiving function. In this manner, the SW SNCP protection protects the OCh fiber. The ODUk SPRing protection mainly applies to the ring network with distributed services. This protection uses two different ODUk channels to achieve the protection of multiple distributed services between all stations. It applies to the ring networks. This protection uses two different wavelengths to achieve the protection of one wavelength of service between all stations Network Level Protection (OCS) This section describes OCS-based network level protection, including linear MSP, MSP ring, transoceanic MSP ring, SNCP, and SNCTP. Table 6-2 Network Level Protection (OCS) 29

34 Product Features Protection Linear MSP MSP Ring Transoceanic MSP Ring SNCP SNCTP Description The LMSP uses the MSOH bytes K1 and K2 to implement automatic protection switching and to protect services. OptiX OSN equipment supports 1+1 and 1:N (N 14) LMSP. The ring MSP scheme uses the multiplex section overhead (MSOH) bytes K1 and K2 to implement automatic protection switching and to protect services. OptiX OSN equipment supports two-fiber bidirectional MSP ring and four-fiber bidirectional MSP ring. A transoceanic multiplex section (MS) is an MS based on the transoceanic MSP protocol and is used to provide path protection for higher order services on a transoceanic ring network. OptiX OSN equipment supports two-fiber bidirectional MSP ring and four-fiber bidirectional MSP ring. The SNCP scheme, which requires one working subnet and one protection subnet, is to select one service from the dually transmitted services. If the connection of the working subnet fails or if the performance of the working subnet fails to meet certain requirements, the connection of the protection subnet takes over. SNCTP is short for subnetwork connection tunnel protection. SNCTP provides protection paths at the VC4 level. When the working path is faulty, all its services can be switched to the protection path Network Level Protection (Ethernet and Packet) This section describes Ethernet/packet-related network level protection. The OptiX OSN 8800 provides various types of network level protection (Ethernet and packet), as listed in Table 6-3. Table 6-3 Network level protection (Ethernet and packet) Protection DBPS DLAG Description Distribute board protect system (DBPS) protection protects the BRAS equipment and links through the virtual router redundancy protocol (VRRP). DBPS protection implements switching of the DBPS protection group and switching between the working and protection BRAS equipment synchronously, and therefore implementing protection for the links between the data board and BRAS equipment. On an NE, two ports of the same port number on two boards of the same type are aggregated into a DLAG group, achieving 1+1 protection for the two ports. 30

35 Product Features Protection ERPS LAG LPT MC-LAG MSTP PW APS STP/RSTP Tunnel APS Description Ethernet ring protection switching (ERPS) is a protocol for Ethernet link protection. This protocol is running in an Ethernet ring and protects links that carry Ethernet services on the ring, improving the availability of Ethernet services. The LAG aggregates multiple physical links to form a logical link that is at a higher rate. Link aggregation functions between adjacent equipment. Hence, link aggregation is not related to the architecture of the entire network. Link aggregation is also called port aggregation because each link corresponds to a port on an Ethernet. The link pass through (LPT) function detects and reports faults at the service access points and on the intermediate networks, and helps the data communication equipment such as routers to switch to the backup network in a timely manner for communication. In this case, important services can still be normally transmitted even when the link is faulty. Multi-chassis link aggregation group (MC-LAG) enables interdevice link aggregation and provides dual-homing protection for Ethernet services. The MSTP protocol prevents loops on a network. It is compatible with the STP and RSTP protocols and resolves the limitations of the two protocols. The MSTP protocol trims a ring network into a loop-free tree network, preventing proliferation and endless cycling of packets on the network. In addition, the MSTP protocol can trim a ring network inside an MSTP region into multiple spanning trees based on VLAN information to balance the network load. As network-level protection, PW APS uses a protection PW to protect the working PW, and helps prevent service interruptions resulting from the working PW failure. PW APS is available in two types: PW APS 1+1 and PW APS 1:1. The STP and RSTP protocols break a loop network into a loopfree network using the spanning tree algorithm (STA) to ensure that each data transmission path is unique on the network and to prevent packet increasing and cycling. As a network protection scheme, tunnel APS uses a protection tunnel to protect the working tunnel and prevent service interruptions in case of the working tunnel failures. Tunnel APS is available in two types: tunnel APS 1+1 and tunnel APS 1:1. 31

36 Product Features Protection VLAN SNCP Description Virtual local area network (VLAN) subnetwork connection protection (SNCP) is a Huawei-developed VLAN-specific protection scheme for Ethernet virtual private line (EVPL) services. It applies to low-delay and low-jitter transport networks to provide carrier-level protection for large-traffic and stable EVPL services. VLAN SNCP protection is implemented using the dual feeding and selective receiving function. To be specific, the transmit end dually transmits the VLAN-based Ethernet services to the working and protection links. The receive end selects the service flow from the working or protection link based on the service traffic statistics on the working and protection links. In normal cases, the receive end selects the service flow from the working link. When the working link is faulty, the receive end selects the service flow from the protection link Equipment Level Redundancy Equipment-level protection includes power redundancy, fan redundancy, cross-connect board redundancy, system control and communication board redundancy, centralized clock board redundancy, and AUX Board 1+1 Redundancy. The OptiX OSN 8800 provides equipment level redundancy protection described in Table 6-4. Table 6-4 Equipment Level Redundancy Category Power Redundancy Fan Redundancy Cross-Connect Board Redundancy Description Two PIU boards in hot backup mode supply power to one subrack at the same time. When one of the PIU boards becomes faulty, the other PIU board continues to supply power to the subrack to ensure that the subrack can still function properly. If a fan in the fan tray assemblies fails, the system can continue to operate for 96 consecutive hours in an environment with temperatures between 0 C to 45 C (32 F to 113 F). Two cross-connect boards can be configured for 1+1 backup. The active and standby cross-connect boards in a subrack connect to all other boards through the backplane bus to protect cross-connection services. 32

37 Product Features Category System Control and Communication Board Redundancy Centralized Clock Board Redundancy AUX Board 1+1 Redundancy Description Two system control and communication boards can be configured for 1+1 backup. The active and standby SCC boards in a subrack connect to all other boards through the backplane bus to provide the following functions: NE database management Inter-board communication Inter-subrack communication Overhead management Two centralized clock boards can be configured for 1+1 backup. The active and standby STG boards in a subrack connect to all other service boards through the backplane bus to provide the following functions: NE clock management Synchronous clock issuing The active and standby AUX boards in a subrack connect to all other boards through the backplane bus to protect the following functions: Inter-board communication Inter-subrack communication 6.6 Automatic Optical Power Management ALS After the automatic laser shutdown (ALS) function is enabled on an OTU or a tributary board, the board disables the laser in the transmit direction when it receives no optical signals from the upstream board and re-enables the laser after it receives optical signals. The ALS function prevents human injuries and prolongs the life of a laser by decreasing the working time of the laser. AGC The automatic gain control (AGC) function ensures that channel gain is not affected when wavelengths are added or dropped or when there is optical power fluctuation in the WDM system. This function guarantees normal service running in the WDM system. The AGC function locks the gain of a single channel using forward and backward feedback control loops. When an optical amplifier (OA) works in gain locking mode and the input optical power fluctuates, the AGC function automatically starts without requiring configuration on the NMS. In this case, the output optical power of the OA changes according to the input optical power and channel gain remains the same. ALC Optical fiber aging, optical connector aging, multiple wavelengths added or dropped simultaneously or other power changes are factors that may lead to abnormal loss on the line. When this happens, line loss is changed, the optical signal-to-noise ratio (OSNR) of the system is degraded. To minimize such influence, the automatic level 33

38 Product Features control (ALC) function automatically adjusts the output power of the amplifiers in the link according to the line loss change. When the line loss changes, the output power of it will remain unchanged. APE IPA The automatic power equilibrium (APE) function automatically detects and adjusts the optical power along channels on WDM-side ports to ensure the required channel optical power flatness. If the channel optical power varies and flatness is not maintained to a specified requirement, the OSNR of the optical transmission line will deteriorate, which will degrade and possibly interrupt the communication. The optical amplifiers (OAs) have high optical power. If the fiber connecting to the OA breaks, the OA will still emit light if the laser on the amplifier is not shut down. The intense light will cause injuries to maintenance personnel during fiber maintenance. To prevent the personal injuries, the intelligent power adjustment (IPA) function promptly shuts down lasers on the affected OAs if the fiber breaks. IPA of Raman System The laser hazard class of the Raman board is class 4 and the maximum output optical power of the LINE optical port on the Raman board is above 27 dbm (500 mw). To prevent personal injuries to human body especially to the eyes caused by laser radiation from exposed fibers, the system provides the IPA function and auto Raman laser shutdown to promptly turn off the lasers on Raman amplifiers in events of line faults. This ensures that the line optical power stays at a safe level. IPA of PID The system provides the intelligent power adjustment (IPA) function for PID boards. When there is a fiber break on the line, the upstream PID board is shut down to prevent injuries. After the system is recovered, the PID board resumes normal operation. OPA Users can specify a mode on the NMS when configuring optical cross-connections. If the auto mode is selected during deployment, the optical power adjust (OPA) function adjusts the attenuation of each EVOA on cross-connect paths to make services available. In practical applications, however, the OPA function should be used together with manual adjustment or the MDS 6630 to accurately adjust EVOA attenuation, ensuring that the input power of optical amplifier and OTU boards meets the anticipated system requirements. 6.7 ASON Feature The automatically switched optical network (ASON) is a new generation of the optical transmission network. The ASON software provided by Huawei can be applied to the OptiX OSN 8800 to support the evolution from a traditional network to an ASON network. Such evolution complies with the ITU and IETF ASON/GMPLS-related standards. As shown in the Figure 6-9,ASON technology involves signaling switching and a control plane to enhance its network connection management and recovery capability. ASON technology provides wavelength-level ASON services at the optical layer and ODUk level 34

39 Product Features ASON services at the electrical layer. It also supports end-to-end service configuration and the service level agreement (SLA). Figure 6-9 ASON feature The ASON has the following features: For OTN network, supports the automatic adjustment of wavelengths during rerouting or optimization, which solves the wavelength conflict problem. Wavelengths can be automatically allocated for newly created services. Automatically configures end-to-end services. Automatically discovers the topology. Provides mesh networking that enhances the survivability of the network. Supports different services which are provided with different levels of protection. Provides traffic engineering and dynamically adjusts the network logic topology in real time to optimize the configuration of network resources. 35

40 Product Features 6.8 Submarine Features Flexible Grid MUX/DEMUX Using flexible WSS components, the flexible grid MUX/DEMUX solution allows access of more wavelengths over a single fiber by dividing the optical spectrum into slices at intervals of 12.5 GHz with a channel bandwidth of n x 12.5 GHz (n 3). This improves the single-fiber transmission capacity and addresses large-capacity transmission requirements. Flexible WSS boards include TN96WSM9 and TN96WSD9. Flexible grid MUX/DEMUX technology supports a maximum of 106 wavelengths, and supports not only a mix of 37.5 GHz channel spacing and 50 GHz channel spacing but also hybrid transmission of coherent and non-coherent wavelengths. Figure 6-10 illustrates a typical application. At the transmit end: The WSM9 boards are cascaded to add wavelengths and OA boards (OBU103) are used for power compensation. At the receive end: The WSD9 boards are cascaded to drop non-coherent wavelengths, or the WSD9 board is cascaded with a TD20 board to drop coherent wavelengths. NOTE The solution supports only C band currently. Figure 6-10 Typical application of flexible grid MUX/DEMUX technology 36

41 Operation and Maintenance 7 Operation and Maintenance About This Chapter This section describes the operation and maintenance items applicable to the product. Table 7-1 Operation and Maintenance Items End-to-End Service Configuration Alarm and Performance Event Management Online Monitoring ETH-OAM MPLS-TP OAM Description The system provides end-to-end OTN service configurations management function, which helps simplify the configuration process. This function helps shorten the network deployment time and implement automatic management of a network. The system uses the alarm and performance event monitoring function for administration and maintenance. The OptiX OSN 8800 supports performance monitoring for WDM-side and client-side signals, facilitating users to maintain equipment.. ETH-OAM provides various operation, administration, and maintenance (OAM) approaches for Ethernet services and links on WDM and OTN networks, achieving convenient and efficient deployment commissioning and routine OAM MPLS-TP operation, administration and maintenance (OAM) can effectively detect, identify, and locate faults on packet switched networks and notify related NEs of the faults, so the NEs perform immediate protection switching. MPLS-TP OAM functionality helps improve network reliability. MPLS- TP is the acronym for multiprotocol label switching transport profile. 37

42 Operation and Maintenance Items Optical Doctor TP-Assist Solution of Packet Services Loopback PRBS Test Tunable Wavelengths Jitter Suppression Function Hot Patch Software Package Loading and Software Package Diffusion Fiber Doctor System OAMS Description The OD system provides for intelligent end-to-end, refined, and digital management of the optical layer on a WDM network. The OD system supports one-click configuration for automatic monitoring, analysis, commissioning, and optimization of network performance. Like the SDH equipment, Huawei OptiX OSN product series supports a hierarchical operating & maintenance (O&M) system by using the TP-Assist solution, so packet services can be configured, commissioned, or maintained in an end-to-end manner. Loopbacks provide an effective means of troubleshooting a network, by verifying a service on a segment-by-segment basis. PRBS Test A board that supports the PRBS test function is equivalent to a simple tester that transmits data to itself. By performing a PRBS test during deployment or fault location, users can determine whether a service channel is faulty without using a tester, which means PRBS tests facilitate maintenance and fault location. The OptiX OSN 8800 supports tunable wavelengths. It adopts 100Gbit/s, 40 Gbit/s, 10 Gbit/s and 2.5 Gbit/s OTUs that support tunable wavelengths. With a jitter suppression unit between the optical receive module and the optical transmit module, the OptiX OSN 8800 has excellent jitter suppression function. Certain equipment requires long-term uninterrupted operation. When a defect is found or a new requirement needs to be applied to the equipment software, old codes need to be replaced with new codes to rectify the defect or realize the new requirement without interrupting the existing services. These new codes are referred to as a hot patch. The system supports software package loading to load, upgrade, activate, and manage the NE-level software in a centralized manner. This simplifies operations when upgrading the NE-level software. In addition, the system supports software package diffusion mode, which provides for high package loading efficiency. The fiber doctor (FD) system is used to monitor and manage line fibers in a network. By precisely detecting the fiber connection status, the FD system helps maintenance personnel analyze the quality of fiber connectors and splicing points, facilitating quick fiber issue diagnosis. OptiX OSN 8800 must works with OptiX BWS 1600G to provide the Optical fiber line Automatic Monitoring System (OAMS), which implements functions such as preliminary fault location and link fiber alarm reporting. 38

43 Operation and Maintenance Items Orderwire Function One-Click Data Collection License Control Description The orderwire provides voice communication for the operation engineers or maintenance engineers at different stations. The one-click data collection function is used generally when the equipment is faulty. By using the fault data collection tool, the fault data and performance data of the equipment can be collected at one time. A license granted by Huawei permits a customer to use the licensed product within a specific use scope and for a specific duration. The customer can also obtain the services committed by Huawei. The licenses include: feature license, cross- connect type and cross-connect capacity license. 7.1 Optical Doctor The OD system supports centralized configuration for optical-layer parameters. Specifically, it performs monitoring and analysis of 10G/40G/100G system performance and in-service performance optimization, supports visualized analysis of optical-layer performance data (such as multiplexed-wavelength optical power, single-wavelength optical power/osnr, BER, gain, attenuation, fiber loss, and flatness) and comparison with historical performance data, and provides reports System Overview Huawei OTN equipment supports the Optical Doctor (OD) system. The OD system provides for intelligent end-to-end, refined, and digital management of the optical layer on a WDM network. Through centralized configuration for optical-layer parameters, the OD system supports automatic monitoring, analysis, commissioning, and optimization of network performance. Functions of the OD System The OD system supports online OSNR monitoring for 40G and 100G wavelengths, making the OSNR monitoring of 40G and 100G wavelengths as convenient as that of 10G wavelengths. This greatly facilitates routine maintenance and makes it easy to upgrade 10G networks to 40G/ 100G networks. Figure 7-1 Online OSNR monitoring using the OD system 39

44 Operation and Maintenance The online OSNR monitoring provided by the OD system has the following features: Simple operations The OSNR monitoring function is integrated into the U2000. It can be performed by directly operating the U2000. The virtual meter provides graphical display of the monitored OSNR information, without using other auxiliary devices or complex operations. High detection precision The detection precision is better than that of traditional 10G OSNR detection. Wide range of monitored wavelengths Online OSNR monitoring is applicable to 10G, 40G and 100G wavelengths, making the OSNR monitoring of all wavelengths at any type of site. In addition, the OD system can be used to perform O&M of the optical layer on a WDM network, as described below. Figure 7-2 O&M of the optical layer on a WDM network 40

45 Operation and Maintenance Centralized configuration for network-wide monitoring The OD system supports centralized configuration for optical-layer performance monitoring parameters, greatly saving labor costs. Automatic monitoring of optical-layer performance The OD system can automatically monitor network-wide optical-layer performance without using any meters. It can automatically detect the channels with abnormal performance. Automatic optimization of optical-layer performance Based on the performance data of each channel, the OD system can automatically adjust the optical power of each channel so that the channel works in the optimal state. End-to-end (E2E) graphical display of optical-layer performance data The OD system graphically displays link performance, facilitating status query and fault isolation. To sum up, the OD system can achieve OSNR monitoring of high-rate WDM networks, quick monitoring deployment, monitoring, optimization, and analysis of E2E optical-layer performance. It improves wavelength-level optical-layer O&M capabilities and provides services along the lifecycle of WDM networks, simplifying the network O&M and saving the operating expense (OPEX) Glance at OD Functions The Optical Doctor (OD) system achieves centralized management and simple configuration, and graphically displays monitoring results using the U2000. NOTE OD V1 supports only the function of monitoring single-ne optical signal-to-noise ratio (OSNR) while OD V2 supports more functions. Detecting and Reporting Single-NE Optical Parameters 41

46 Operation and Maintenance The OD can detect and report the single-wavelength optical power and OSNR at each site of a 10G, 40G or 100G network, and enable users to view the receive- and transmit-end single- wavelength optical power and OSNR on the MCA/OPM8 board at the receive or transmit end. Figure 7-3 Detecting and reporting single-ne optical parameters OSNR detection point Performing Centralized Configuration and Delivering for the Monitoring Function The centralized configuration includes setting monitoring parameters and configuring automatic monitoring of network changes and historical data backup. The OD enables users to set monitoring parameters in a centralized way. Users do not need to concern for configuration details and the configuration data is automatically delivered. This feature greatly saves labor costs and improves configuration efficiency. The OD automatically monitors network changes and periodically delivers the configured monitoring parameters to new services. The OD periodically backs up historical data. Figure 7-4 Centralized setting of monitoring parameters 42

47 Operation and Maintenance Detecting and Reporting Optical Parameters in E2E Mode Without Using Any Meter The OD visually displays OCh signal flows, and the optical power and OSNR of the current E2E OCh trails. Figure 7-5 Graphically display of optical parameters in E2E mode : OLA : OADM 43

48 Operation and Maintenance Optimizing Network Performance The OD considers abnormal OCh trails as to-be-optimized OCh trails and records the abnormal alarm information. users can manually start optimization and commissioning on the OCh trails. Figure 7-6 Optimizing network performance 7.2 Fiber Doctor System The fiber doctor (FD) system is used to monitor and manage line fibers in a network. By precisely detecting the fiber connection status, the FD system helps maintenance personnel analyze the quality of fiber connectors and splicing points, which facilitates quick fiber issue diagnosis. In a WDM system, fiber issues, such as fiber aging, fiber damages, fiber coiling, largeradius bending, and large pulling stress, may cause large fiber attenuation and high BERs that will consequently impair network operating. 44

49 Operation and Maintenance In addition to fault diagnosis, traditional optical time domain reflectometers (OTDRs) can be used to measure the fiber length, attenuation introduced in fiber transmission, and fiber connector attenuation. OTDRs are therefore widely used in the fiber engineering and network deployment phases. Figure 7-7 Schematic diagram of the OTDR detection application Fiber performance testing is classified into acceptance testing and maintenance testing based on the test implementation phase. Acceptance testing is performed when links are offline. With the wide application of fibers, maintenance testing has become a vital and usual part of the process. Regularly performed maintenance testing helps detect the fiber performance in a network in a timely manner. If traditional OTDRs are used to perform fiber performance testing, the testing needs to be performed on site and services need to be interrupted. Online fiber status detection methods that can achieve remote, online, accurate, and quick fiber status detection are necessary to improve maintenance efficiency and reduce maintenance costs. Line Fiber Quality Monitoring Function of the FD System Using built-in probe lasers on the TN12RAU1, TN12RAU2, TN11SRAU, or TN12ST2 board to emit probe light, the FD system detects insertion loss changes and change occurring positions in fibers based on the Rayleigh scattering and Fresnel reflection principles. The FD system then reports the detected data to the NMS to implement the following functions: Provide visualized OTDR meter-like GUIs on the NMS. Support remote monitoring of fiber quality. Support quality detection for fibers within different length ranges based on the monitoring mode and detection parameter settings. Save and compare historical detection results. View the length and attenuation of the specific fiber span on the entire network. Figure 7-8 Schematic diagram of the FD detection application 45

50 Operation and Maintenance The line fiber quality monitoring function of the FD system helps maintenance personnel quickly discover and rectify fiber quality issues, ensuring normal network operations. Application Scenario of the Line Fiber Quality Monitoring Function Table 7-2 Application scenario of the line fiber quality monitoring function Board Type TN12RAU1/ TN12RAU2/ TN11SRAU TN12ST2 Scenario This board is mainly used to ensure that the Raman pump laser is properly started. It provides the following functions: Locates fault points when the fiber connection detection results are abnormal. The fiber connection detection can be performed using the FCD button on the front panel of the TN12RAU1, TN12RAU2, TN11SRAU, or TN12ST2 board in the fiber connection verification phase during hardware installation. Checks fiber quality before deployment commissioning. Locates fault points when the Raman laser cannot be turned on and a LASER_OPEN_FAIL alarm is reported. Checks fiber health status at any time during network operations. Analyzes whether a fiber quality issue occurs when the Raman gain is excessively low and an OA_LOW_GAIN alarm is reported. Locates fault points when a fiber cut occurs and a MUT_LOS alarm is reported, or verifies fiber recovery status after a fiber cut is removed. This board is mainly used for fiber quality monitoring and fault diagnosis during O&M. It provides the following functions: Checks fiber quality before deployment commissioning. Performs real-time monitoring during network running and checks fiber status. Locates fault points when a fiber cut occurs and a MUT_LOS alarm is reported, or verifies fiber recovery status after a fiber cut is removed. 46

51 Operation and Maintenance Networking Scenarios of the Line Fiber Quality Monitoring Function Based on the actual hardware configurations, the FD system can implement line fiber quality monitoring in two-fiber bidirectional and single-fiber bidirectional networking scenarios. Figure 7-9, Figure 7-10, Figure 7-11, and Figure 7-12 show the typical networking scenarios. NOTE The FIU board connected to a TN12ST2 board and its peer FIU board must be TN13FIU03, TN16FIU01, or TN11SFIU01. No optical attenuator can be configured between the OUT port of the TN12ST2 board and the RM port of the FIU board. On a short fiber span, for a TN12ST2 board, a fixed optical attenuator (FOA) needs to be added to the RM1 or RM2 port of the board rather than the TMn or TXn port of other OSC boards so that the fiber insertion loss is greater than 15 db, preventing a receiver overload issue. Figure 7-9 Networking scenario equipped with TN12RAU1/TN12RAU2/TN11SRAU Figure 7-10 Networking scenario equipped with TN12ST2 but without a Raman board 47

52 Operation and Maintenance Figure 7-11 Networking scenario equipped with TN12ST2 and TN12RAU1/TN12RAU2/ TN11SRAU NOTE In this networking scenario, probe light is amplified by a backward Raman board, which may affect detection data. Figure 7-12 Networking scenario equipped with SFIU and single-fiber bidirectional TN12ST2 48

53 Operation and Maintenance NOTE In this scenario, only the fiber with an OSC channel can be monitored and the other fiber cannot. In addition, the TN12ST2 board at one end can be detected only after detection on the TN12ST2 board at the other end is completed; otherwise, detection results will be affected. This scenario is inapplicable to an ASON network. When the TN12ST2 board works on wavelength 1491 nm, it does not support automatic detection. Components of the FD System The FD system requires the interoperation between hardware and software. The hardware emits probe light to obtain fiber performance data, which is then uniformly scheduled by the software. The software provides user-friendly GUIs to set detection modes in various scenarios. Hardware The TN12RAU1, TN12RAU2, TN11SRAU, or TN12ST2 boards support the line fiber quality monitoring function. They emit probe light to obtain fiber performance data, receive detection results, and report the obtained fiber performance data to the FD system. Software The FD system is integrated on the U2000. After users issue detection commands on the U2000, the FD system receives the performance data reported by equipment and graphically displays the data. The following figure shows the interoperation between the hardware and software of the FD system. 49

54 Operation and Maintenance 50

55 Network Management 8 Network Management This chapter describes the network management system, as well as inter-ne and intra-ne communication management. Figure 8-1 shows a sample network management structure with Huawei equipment deployed. Figure 8-1 Network management structure Network management involves the following aspects: 51