Hi @ianfab 

Thanks for posting in our business forum.

1. Check if it automatically reboots which rules out the hardware issue.

2. If all the ports flash at the same time, it could be broadcast from a device or the network storm caused by a loop.

Or you can remove the stuff like the Sonos beam, test it with a PC, or something else. Find out which device is causing the trouble or it is the switch hardware.

Hi @ianfab 

Thanks for posting in our business forum.

ianfab wrote

Hi @Clive_A 

 

in the meantime I have read a lot of articles and threads and it looks like that the correct STP handling is very important for a SONOS system with multiple hardwired devices creating one Sonosnet.

Can you give more information about how TL-SG108E and TL-SG105 handle STP BDPU packets?

 

Thank you!

This kind of switch dose not support STP. STP would be a feature on the managed switch. This one is entry-level and 105 is an unmanaged switch.

If you want to know how does it handle STP, you need to Wireshark. Based on what you described, it now looks like just switch and forward. No process.