linux vlan

Hello everyone, I have a small 3-node PVE cluster at home that I mess with and learn on. Each node has 1 onboard NIC (eno1), Mellanox 10GB NIC (CEPH) and 2 USB3 NICs, one for Corosync and the other for Proxmox Backup Server. Initially, all of my ports are all "untagged-access" ports but I've...