Yeah I noticed, but luckily there is another way. I went to to switch -> switchstacks and over there you can create the L3 interfaces.   Thank you all for your help, much appreciated! ... View more

It's indeed strange, it's only 1 of 40 that has this issue. I've tried another port on the switch, a different cable (Cat5e and Cat 6) but no joy.   I will contact the Meraki Helpdesk and see if they have an idea. If there is an solution provided i will post it here. ... View more