@Jokie74 Jokie74 wrote This is the config of switch 1: !SX3008F # vlan 1 name "System-VLAN" # vlan 254 # hostname "Wohnen" location "" contact-info "" serial_port baud_rate 38400 ip dns-address...

@lkakas lkakas wrote @Clive_A Thanks a lot for your feedback. Unfortunately one of the sites is behind CGNAT, so I can only do VPN connection from one site to another. Only one of the site has public...

@HW25 HW25 wrote Thanks for the info. I've already found this guide and tried these steps. The same thing happens in standalone mode and with the controller. The same problem occurs with both...

@Jokie74 Do you have the output of the LACP from CLI? I assume the LACP is not effective. Disable any loop detection or STP. The behavior you described is clearly a problem with the connection loop....

@AleCalixto AleCalixto wrote @Clive_A thanks, is there any free cloud based SNMP tool you recommend? Otherwise I think I'll have to build a cloud server and install Omada Controller. For this...

@HW25 Details and steps have been explained in this link: https://www.tp-link.com/en/support/faq/3936/