Huawei MA5800-X15 MPLA Active/Standby failure after config load

Hi there, guys!

This post enquires about the Huawei MA5800-X15 MPLA Active/Standby failure after config load. Please see more details as you read further down.

ISSUE DESCRIPTION

I have 2 Huawei MA5800-X15 OLTs with 2 H902MPLA boards each - one on my desk and one working in production.

Initially, both boards of the OLT on my desk were running fine. One of the boards had ACT led ON and the RUN/ALM led was blinking green (0.5s) on both of the boards, as it should be when things are running correctly.

I've exported the config from the production OLT via tftp running:

backup configuration tftp 192.168.1.11 backup.cfg

After that, I've loaded and applied this configuration into the OLT on my desk using:

load configuration tftp 192.168.1.11 backup.cfg all

active configuration system

After that, the OLT on my desk has rebooted successfully and loaded the new configuration. Next, I ran the save command. Then I decided to reboot the active board (board1) with:

reboot active

During the reboot of board1, the ACT led on board2 switched ON (green) and the RUN/ALM led on board1 started blinking red every 0.25 sec, which is normal during reboot. Unfortunately, the board2's RUN/ALM led never became green again and ACT led has never blinked again. I left everything for a couple of days and nothing changed. The complete OLT reboot did not help.

I know that none of the boards are faulty because when I reboot the board2, then board1 comes online and board2 stays with RUN/ALM blinking led in red.

Seems like they are working separately and cannot get synchronized. When one board reboots, the other loads up and becomes active, but the recently rebooted board just hangs in the middle of the loading process.

I've connected two console cables - one to each board - and I can see that the board with the red light just stops at the same point every time. The active board on OLT has an alarm which says:

The communication between the board and the control board fails.

Here is the console output from both boards:

https://imgur.com/a/8x3atmL.

The board with RUN/ALM red light always stops after

Starting system application init......successfully!

After this line it should start loading config, but it does not until the active board goes for reboot!

POSSIBLE SOLUTION

I've tried to do a factory reset on both boards (separately) with:

erase flash data

reboot system

But it did not work out. Both boards have a default configuration now, but keep doing the same thing again and again. Looks like the boards can't sync the configuration between them. Or both want to become Active and only one loads up.

I've also upgraded both boards to V100R018C10SPH102. I´ve also erased nand fs by running nandfsformat from the BIOS on both boards and then loaded the packetfile. Same situation. There is an option eraseall but I'm not sure that I have the files to restore it.

I've tried to Google about this situation, but I did not find a single word about it. Seems like some unique situation.

Did anyone have similar problems with Huawei OLTs? Will you please assist me in this Huawei MA5800-X15 MPLA Active/Standby failure after config load? Thanks in advance!