Description of the problem

When an engineer is maintaining the transmission network of an enterprise network, he queries the cross-board inversion status of an OSN3500 device in T2000 "Element Manager", "Single Board 1+1 Protection", and finds that the status of the "Current Board and found that the status of "Current Board" was "Unknown".

Transmission OSN3500 host version: 5.21.13.47P01

T2000 network management version: T2000V200R006C01

Alarm information

No

Processing

1, engineers through the T2000 query, 9 slots GXCSA single board version for 3.19, 10, slot GXCSA single board version for 9.63, single board software version is inconsistent;

2、 Engineer through the T2000 query, 9 slot cross board type is: SSN1GXCSA01, 10 slot cross board type is: SSN1GXCSA02;

3. The engineer finds that the software versions of the two types of single boards are matched with the host version by querying the OSN3500 product version matching table.

4. After consulting with the customer, it is understood that the customer has purchased a batch of SSN1GXCSA02 as the spare parts of SSN1GXCSA01, and through the 800 customer service telephone consultation, it gets the reply that the two types of single boards can be mixed and inserted. Therefore, the customer replaces SSN1GXCSA01 with SSN1GXCSA02 in slot 10 of the device in maintenance.

5, engineers to the scene, the 10-slot SSN1GXCSA02 will be replaced by SSN1GXCSA01, T2000 network management can query the cross-board inversion status, the problem is solved; then, the 9, 10-slot SSN1GXCSA01 one by one after the replacement of the SSN1GXCSA02, you can also query the status of the reversal of the single board.

6. The engineer judges that the cross-board inversion status may not be queried due to the mixing of SSN1GXCSA01 and SSN1GXCSA02.

Root cause

Equipment problem

Recommendations & Summary

The two single boards can be used as each other's primary backup, and when the following encounter a similar situation where the inverted status cannot be queried, you can consider replacing it with the same type of crossover board to try it out.

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