Virgo wrote @lukass2000 Suggest turn off Loopback detection and test again. @Virgo If I disable "Loopback detection" the message will no longer come, but the apparently existing problem will not be...

Fleegle61 wrote @lukass2000 As you can see, if you set it up for loopback, it will detect a loop and shut down the port. When using RSTP it will look to see which path to keep active and which path...

Hi @Fleegle61 , @btx Tentatively I enabled RSTP on all switches. After activating, I get a lot of message like this every few minutes: TL-SG2218 port Gi1/0/15 was blocked. or TL-SG3428 port Gi1/0/5...

@Fleegle61 If i activate RSTP on the TP-Link Switches I need to fill out a Priority field. Default is 32768. Is this okay?

@Fleegle61 @btx Okay, have seen, all my Switches have activated "Loopback Detection", and also RSTP dectivated. Should i deactivate "Loopback detection" on the SG2218, or is better i activate RSTP on...

@Fleegle61 Thanks :) Sometimes my laptop is also connected to the Netgear switch via a LAN cable. The Laptop would also have WiFi, maybe that's causing the problem? I will watch that The three access...