@Clive_A Both Switches are running with Firmware Version 1.0.6. With Version 1.0.5 i have done a rollback to Version 1.0.3. With the release of Firmware Version 1.0.6 i have done a Upgrade from...

@Clive_A But the only solution after firmware update AND/OR reboot is, to plug in the LAN cable again. After that, the SG3210X-M2 will be readopted. Otherwise, the Switch is displayed as disconnected.

@Clive_A Thank you for your reply, Clive! My VLAN-Settings are fine and the following: Management-VLAN: ID 100 LAN-VLAN: ID 110 Omada-Hardware: SG3218XP-M2 UN 1.0, Firmware 1.0.6 SG3210X-M2 UN 1.0,...

Hello, maybe i have identified the problem. The SG3210X-M2 is connected to the SG3218XP-M2 via Trunk. Untagged-VLAN is the Management-LAN-Subnet, just like the SG3218XP-M2, tagged VLAN is the...

@Clive_A Ok, i have also resetted the SG3218XP-M2. Firmware 1.0.3 is now installed. Thank you for your help!

@Clive_A Thank you very much! I have done a full-reset via USB-Serial-Connection (Omada-Controller couldn't resetting the switch after forget-command) and the Firmware 1.0.3 is now installed. Is my...