@Alexandre. found it. It seems that my daughter thought it was a good idea to plug in a additional cable (both ends) 😱 in the same switch. Took them out and all works good again. regards

@Alexandre. Sorry for the delay in my answer. It has been a hectic two weeks. But I have done my homework. I attached a new network cable between the master and the slave. this was successfully. So I...

@Alexandre. Due to the lack of a propper networkcable (only handmade), I could not try your suggestions. Tomorrow I will collect a good one at work for trying.

@Alexadre, thank you for your reply. I will give this a try tomorrow.. Just left home for a "quick" beer

Hi all, I am a bit lost, for almost 3 years I have used a DECO M4 set (three satellites),main satellites connected by a CAT6 network cable, the second satellite (third floor) also connected via CAT6...