GS1920-24HP

Rickyc81

Hi guys, at office i have an GS1920-24HP POE that have a strange issue, it lost config after power loss..
the switch doesnt'have a real config, only changed default password, but when power loss accours it lost saved password..

this is the log

16 2022-01-01T00:00:54Z DE interface: Port 20 link up 1G/F
17 2022-01-01T00:00:53Z DE interface: Port 14 link up 1G/F
18 2022-01-01T00:00:53Z DE interface: Port 12 link up 10M/F
19 2022-01-01T00:00:40Z NO system: System cold start
20 2022-01-01T00:00:40Z IN system: Image 1 F/W version V4.80(ABMI.1) | 07/08/2024 boot up
21 2022-01-01T00:00:40Z AL system: System has reset without management command
22 2026-06-23T05:06:10Z DE interface: Port 14 link up 1G/F
23 2026-06-23T05:06:06Z DE interface: Port 14 link down
24 2026-06-23T05:05:59Z DE interface: Port 14 link up 1G/F

and this is version details:

System Name	GS1920
Product Model	GS1920-24HP
ZyNOS F/W Version	V4.80(ABMI.1) | 07/08/2024
Ethernet Address	70:49:a2:59:d0:fd
CPU Utilization Current (%)	19.60

Can i do something to fix this issue?

Thanks!!

Zyxel_Melen

Hi @Rickyc81 ,

This behavior occurs because of how configuration saving works on Zyxel switches. When you apply a setting or change a password in the web GUI, it is only temporarily saved to the switch's Running Configuration. If the switch is powered off or rebooted, these unsaved settings are lost and the switch reverts back to its last saved startup configuration.

To ensure your new password persists through a power loss, please follow these steps:

1. Change the Password: Go to the configuration page and change your default password as you normally do.
2. Save the Configuration: Look at the top-right corner of the web GUI. You will see a flashing Save button (or disk icon). Click on it to save the active running configuration to the startup configuration (saving it to Config 1).
3. Alternative Save Method: You can also navigate to MAINTENANCE > Configuration > Save Configuration (or Maintenance > Save Configuration depending on your layout) and save your current configuration.