Description of the problem

The configuration of Huawei transmission equipment OSN3500 in room A is as follows: 1-N2PQ1A, 2-N2PQ1A, 6-N1SLQ1A, 7-N1SLQ1A, 9-SXCSA, 10-SXCSA, 17-N1GSCC, 18-N1GSCC, 19-D75S, 20-D75S, 27-PIU, 28-PIU, 37- AUX. 6-N1SLQ1-1, 7-N1SLQ1-1 and Company N's EBSC are interfaced to form a 1+1 linear multiplex section (non-recovery). On a certain day, when optical power query is performed on 6-N1SLQ1-1 and 7-N1SLQ1-1, it is found that the optical power value is not displayed, but the service is running normally, and there is no alarm in the network management.N1SLQ1 Hardware Version:SSN1SLQ1, Software Version:6.11.GSCC Hardware Version:SSN1GSCC01, Software Version:5.21.16.13.Network Management Version: T2000V200R007C03.

Processing

1, N1SLQ1 optical module is a multimode optical module, multimode optical module support network management online query optical power. The 6-N1SLQ1 optical board 2, 3, 4-port optical module were pulled out and inserted into the 1-port, and the optical power query was performed on the network management side, and the value of the optical power was still not displayed.

2, respectively, query GSCC, N1SLQ1 host version. GSCC host version: 5.21.16.13, N1SLQ1 software version: 6.11. OSN series of transmission equipment host version and single-board software version matching requirements are relatively high. If the versions match, you must upgrade the host version or lower the single-board software version, and upgrading the host software version and lowering the single-board software version are both dangerous and take a long time for service recovery. Consult Huawei's 800 customer service hotline, and the N1SLQ1 software version that matches the host software 5.21.16.13 is 4.13. In order to quickly locate and solve the problem, find two N1SLQ1 spare parts (software version: 4.13) in the company's veneer spare parts library and replace them, and unplug the original 6-N1SLQ1 1st optical port optical module and 7-N1SLQ1 1st optical port optical module from the veneer. Insert the N1SLQ1 spare part into the first optical port, and after the insertion is completed, query on the network management side, the optical power value is displayed normally.

Root cause

1. Optical module failure.

2. Huawei N1SLQ1A software version and GSCC software version do not match.

Suggestions and Summary

OSN series transmission equipment has high requirements for matching the single board software version and host version. If there is a mismatch between the versions, problems such as the optical power of multimode optical modules cannot be displayed normally will occur, which needs to be paid attention to in the daily maintenance work.

This chapter of related technical information and SDH equipment troubleshooting process is collected and organized by Shenzhen Optical Transmission Network Technology Company Limited (www.opticaltrans.com), reproduced please retain! Our company specializes in the sale of Huawei SDH optical transmission equipment,SDH transmission equipment.