Tag Archives: Cross-Connect Boards

Pay attention for SSN1EAS2 Board Occasional Packet Loss or Ethernet Service Interruption on NG SDH Products

Problem Description Trigger condition: 1. SSN1EAS2 boards use FPGA 110. 2. Cross-connect boards in slot 10 are active cross-connect boards. 3. The PCB of a cross-connect board is SSN1SXCS1, SST1PSXCSA1, SST1PSXCSA, SST2PSXCS, or SSN2SXCS. 4. When the proceeding three conditions are all met, the problem occurs occasionally (about 10% probability) and is determined by SSN1EAS2… Read More »

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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 »

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 »

Beware of BD_STATUS Alarms by Cross-Connect Boards of OptiX OSN 3500

Summary: Creep occurs on SD585 soldered balls of some cross-connect boards on  Huawei transmission OptiX OSN 3500 equipment so these boards repeatedly reset, fail to work, and report BD_STATUS alarms. [Problem Description] Trigger conditions: There is a possibility that this problem occurs as a result of long-term exposure of the boards involved to high temperature. Symptom:… Read More »

Notice for Abnormal Service Interruption on OSN 9500

[Problem Description] Trigger condition: This problem occurs when: The higher order cross-connect board on the Huawei Optical transmission product OSN 9500 NE uses software of the problematic version. Perform service addition/deletion, SNCP switching, MSP switching, and ASON rerouting operations twice or several times within 5 minutes. Symptoms: Symptoms may vary depending on the specific operations that… Read More »

Cautions for Service Configuration Failure on OSN 9500

[Problem Description] Trigger conditions: Two lower order cross-connection protection groups are configured on an OptiX OSN 9500. If any of the following operations is performed, the problem occurs. 1. Configure lower order services, or convert ordinary lower order services to lower order SNCP. 2. Run commands or perform operations on the NMS to adjust concatenated… Read More »

Do you find any solution on rectification Cross-Connect BD_STATUS alarm on OSN 3500

Summary: Creep occurs on SD585 soldered balls of some cross-connect boards of OptiX OSN 3500 so these boards repeatedly reset, fail to work, and report BD_STATUS alarms. [Problem Description] Trigger conditions: There is a possibility that this problem occurs as a result of long-term exposure of the boards involved to high temperature. Symptom: 1. Boards are… Read More »