Hello @Clive_A . Yes, I tried the settings you posted a few days ago, but it got worse. There are two sfp+ 10Gbe Modules in each switch connected via 20 Meter FTTH fibre cables. Each cable alone is...

Hello @Clive_A Here is the output of the command with port 7 plugged in: Keller#show etherchannel 1 detail Group state = L2 Ports: 2 MaxPorts = 16 Protocol: LACP Ports in the group:...

Dear @Clive_A , I'm not able to upload a network diagramm here, so I will post the code for mermaidchart: graph TD subgraph Router Internet["🌐<br>Internet"] end subgraph "Switch 1 | Clients &...

@Clive_A sorry for my late reply. I was a bit busy last days. I unplugged port 7 because of the instability. Here is the output as you requested: switch1# show etherchannel 1 detail Group state = L2...

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 primary 192.168.0.254 # #...

@Clive_A Thanks for getting into this. I don't have a CLI output, I used the Omada Controller Software to configure it. Now I deactivated spanning tree and loopback detection and it even got worsier....