Description of the problem

A bureau OSN3500 new expansion of a N4EGS4 single board, single board expansion up, the single board can be normal work, network management can also be added to the normal, is the STATE light red. After configuring services, the board does not report any alarms.

Host version is: 18.50P01

Alarm message

No

Processing

1, due to the R8 host is not support N4EGS4 single board, in the network management created as N3EGS4, this is correct, the version of the single board is also with the host supporting.

2, replaced a single board, or the same phenomenon.

3, replaced the slot or the same phenomenon.

4, reversed the main control board or the same phenomenon.

5, after on-site verification, found that the N4EGS4 single board configuration of the Gigabit power module, but the host does not support the Gigabit power module, the host will be upgraded to R9, the problem is solved.

6、If you can not upgrade to R9 version, you can only replace the electric module with optical module.

Root cause

1. Veneer failure

2、Slot failure

3、Fault fault

4、Single board specification host does not support

Recommendations and Summary

When encountering this strange phenomenon, you can consider whether the version of the veneer matches, and whether some specifications of the veneer are not supported by the host. It is recommended that R&D should report some alarms to indicate that the module is incorrect in this scenario.

In addition, whether the EGS4 board is configured with an optical module or an electrical module can be confirmed by querying the manufacturing information of the board.

The relevant technical information in this chapter and the troubleshooting process of SDH equipment are collected and organized by Shenzhen Optical Transmission Network Technology Co. Our company specializes in Huawei SDH optical transmission equipment,SDH transmission equipment sales.