Problem of the week: I have four network switches, three are POE, three are L2+/Layer 3 Lite. My Orbi router has four vlans, and I'm trying to trunk the uplink ports and it's...just not working.
The thing is...it did work a month ago, no problem. Yes, I caused an mDNS storm in the process, but that's the learning process. I worked out what I did wrong, fixed the ports, and was able to assign vlans to specific ports and got one of my Proxmox servers accepting all four in separate interfaces.