The OSN3500 SSN4SL64 single board has several functional versions, different functional versions provide different functions, among which, the N2SL64 single board has been discontinued. The Optical Interface Board is a line board that can be used on OptiX OSN series devices to realize the reception and transmission of STM-64 optical signals. With this board, the SL64 sends the received optical signals to the crossover side through O/E conversion, while the electrical signals from the crossover side are sent out through E/O conversion. The single board supports functions and features such as receiving and transmitting 1 channel STM-64 optical signals and overhead processing. The single board consists of an optoelectronic conversion module, a MUX/DEMUX module, an SDH overhead processing module, a logic control module and a power supply module. When the cross-capacity is 200 Gbit/s, the N1/N2SL64 boards can be inserted in slots 7 to slot 8 and slots 11 to slot 12 of the subrack. the N4SL64 boards can be inserted in slots 5 to slot 8 and slots 11 to slot 14 of the subrack.

Problem Description

The backbone network of a power customer is a 4-site SNCP ring, A-B-C-D-A, with a capacity of 2.5G. Due to the business need to expand the capacity of 2.5G to 10G, a 10G ring is formed first, and then the service is cut to the 10G ring from the 2.5G ring, and then exits from the 2.5G ring, and the 10G optical board fails to query the optical power during the commissioning of the 10G ring, and there is no abnormal alarm, and the service is normal.

Processing

1、Check the 15-minute and 24-hour performance monitoring of the device, both of which have been turned on, and the turn-on time has exceeded 15 minutes. In addition to the optical power query, the performance of the SL64 board cannot be queried, and the network management suggests that the system is busy.

2, query station A original SL16 board optical power and performance are normal, to rule out the possibility of a problem with the main control board, it should still be SSN4SL64 board problems.

3, check B, C station SSN4SL64 board optical power and performance, the phenomenon is the same, D station SSN4SL64 board optical power and performance query are normal.

4、三个站的SSN4SL64同时坏的可能性很小，怀疑是版本配套问题，查询A,B,C,D的主控版本，A,B,C的主控版本为5.21.32.52，D站的主控版本为5.21.20.55，SSN4SL64板的版本都为8.05，查询配套表：主控版本5.21.32.52, SSN4SL64 supporting version is 10.72, the master version is 5.21.20.55, SSN4SL64 supporting version is 8.05, so the D station query optical power and performance are normal.

5、Upgrade the SSN4SL64 software of station A,B,C to 10.72, and the query optical power and performance are normal.

Failure causes

The main control version and SSN4SL64 board software version do not match.

Solution

Upgrade the SSN4SL64 board software to match the master version.

Recommendation and Summary

When expanding the capacity, you need to focus on whether the software version of the expanded board and the host are matching to avoid some unknown problems during expansion.

The related technical information and SDH equipment troubleshooting process in this chapter are provided by Shenzhen Optical Transmission Network Technology Company Limited ( www.opticaltrans.com), please retain! Huawei SDH Optical Transmission Equipment,SDH Transmission Equipment Sales