Pay attention to Alarms Reported on Some Boards for OptiX Metro 6100 and OptiX BWS 1600G

[Problem Description]
Trigger conditions:
This issue is triggered when operations are performed on the flash memories of the boards such as the C9ELOG board intended for OptiX Metro 6100 or OptiX BWS 1600G. The operations include writing logs and saving configurations.

Symptom:
During the running of the OptiX Metro 6100 or OptiX BWS 1600G, a WRG_BD_TYPE alarm is reported on a board. A MAIL_ERR alarm may be also reported on the board.
Identification method:
You can identify the issue when the following conditions are met:
1. A WRG_BD_TYPE or MAIL_ERR alarm is reported on a board and the physical board type of the board where the WRG_BD_TYPE alarm is generated is 00 01.
2. The software versions of the boards involved are the following or earlier versions:
OptiX BWS 1600G:
SSE2SC1/E2SC2: 2.16
SSE3RPC03: 3.18
SSE3ELOG: 3.26
SSE1MCA01/03/07/08: 1.28
SSE8ELOG/SSE8LBF: 8.33
SSE8ETMX: 8.33
SSE8TMR: 8.33
SSE1ROP01: 2.24
SSE1FMU02: 1.14
OptiX Metro 6100:
SSC9SC2: 2.16
SSC9ELOG: 3.24
SSL2MCA/C7MCA/C7MCA01/SSCBETMX: 1.27
SSCBELOG: 8.31
[Root Cause]
When flash memory writing operations are performed on boards such as the C9ELOG board intended for OptiX Metro 6100 or OptiX BWS 1600G, memory overwriting may occasionally occur. As a result, the message queue is blocked, the board type 00 01 is reported, and the WRG_BD_TYPE and MAIL_ERR alarms are reported.

[Impact and Risk]
When the fault occurs, the involved boards cannot be configured. Services are not affected.
[Measures and Solutions]
Recovery measures:
Remove and re-insert the involved boards
Workarounds:
None
Preventive measures:
Upgrade the software package to Huawei OptiX Metro 6100 V100R008C04SPC600 or OptiX BWS 1600G V100R007C02SPC700 or later.