Pay Attention to Service Interruption on FPGAs Cross-Connect Boards

[Problem Description] Trigger conditions: The FPGA of a cross-connect board is faulty and in an incorrect state, so the FPGA falsely checks the status of the service board and triggers MSP switching with an abnormal state, resulting in service interruption. Symptom: MSP switching occurs, services are interrupted, and the faulty cross-connect board is reset or… Read More »


Pay attention to Alarms Reported on Some Boards for OptiX Metro 6100 and OptiX BWS 1600G

[Problem Description] Trigger conditions: This issue is triggered when operations are performed on the flash memories of the boards such as the C9ELOG board intended for OptiX Metro 6100 or OptiX BWS 1600G. The operations include writing logs and saving configurations. Symptom: During the running of the OptiX Metro 6100 or OptiX BWS 1600G, a… Read More »

Precaution on Service Password Restoring the Fault of Oracle M-series Server

[Problem Description] If the Oracle M-series (M4000 or M5000) server is not in the Oracle’s maintenance warranty services, no service password is provided. Without the service password, the service cannot be restored if the servers have the following faults: 1. For Oracle M-series server such as M4000 or M5000, if the hardware status is faulty… Read More »

Pay attention on the Failure of TNH2SL1D and TNH2SP3D Boards Get Online on OSN 500

[Background Information] TNH2SL1D, TNH2SP3D, and TNH2PL3T boards are developed based on OptiX OSN 550 V100R003 and are used on OptiX OSN 500 V100R002 to replace TNH1SL1D, TNH1SP3D, and TNH1PL3T boards. TNH2 boards are applied to OptiX OSN 500 V100R002 using the hardware independence technology. Software of OptiX OSN 500 earlier than V100R002SPC305 does not contain… Read More »

Notice on Bare Power Terminals Configured for OptiX OSN 3500

Abstract: OptiX OSN 3500 type-III cabinets (BOM: 02113256) started to be manufactured and delivered by India Supply Center from September, 2011. Cabinet process inspection shows that the cabinet power OT terminals delivered by India Supply Center are not fully wrapped in the heat shrink tubing. The entire cabinet test shows that in all power-on scenarios,… Read More »

Cations for OTU2_LOF Reported on TN55NPO2(E) in OptiX OSN 8800 Products

Summary: The TN55NPO2(E) board reports an OTU2_LOF alarm on corresponding channels because of large leakage current on the X5R capacitor of the board. This problem has been reported several times on live networks. Huawei osn 8800 products: [Problem Description] Trigger condition: None Symptom: When the problem occurs, the TN55NPO2(E) board reports an OTU2_LOF alarm on corresponding channels… Read More »

Be ware of NEs Occasionally Becoming Unreachable on OptiX OSN 1800

Summary There is a low probability that NEs report SWDL_NEPKGCHECK alarms when OptiX OSN 1800s are upgraded from V100R003C01SPC200 or earlier versions to V100R003C01SPC300. As a result, some boards cannot start up and non-gateway NEs may become unreachable. [Problem Description] Trigger condition: Huawei transmission equipment OptiX OSN 1800s are upgraded to V100R003C01SPC300..There is a low probability… Read More »


Symptom: In the deployment of the project of the OSN1500B Ring we have a problem that happened without any notice in the site with external clock reference,this alarms caused an cut of an BER test performed in the network. Alarm Information:  Those alarms are cleared without any operation and customer need know why those alarm happened.… Read More »

Reasons for logical abnormality and Fail restoration of TN serises DWDM board

Summary: When a warm reset is performed on a TN52XCH, TN52XCM, TNK2XCT, or TNK2SXM board that has not booted, the board becomes logically abnormal and cannot be restored to normal. [Problem Description] Trigger conditions: For a TN52XCH, TN52XCM, TNK2XCT, or TNK2SXM board, when the physical board is installed but no logical board is configured or… Read More »

Cautions for Bits Error Problem of SSN2PQ1-B3 Boards on the NG-SDH Product

Summary: For SSN2PQ1-B3 boards whose PCBs are manufactured by Fastprint, service bits errors occur when they are working with SSN1GXCSA/SSN1EXCSA/SSN1UXCSA/SSR2CXL cross-connect boards. [Problem Description]Fault symptoms: Service bits errors occur after the board is powered on. Trigger conditions:SSN2PQ1-B3 boards in Ver.A that are delivered on 2013-03-01 to 2013-07-31. Determine the faulty board based on the part… Read More »