VLAN Problems

[Gareth_H]

I did get it working, but then I had tonnes of issues with dropped packets on my LAN. Stripped all my VLAN config away (only on the switches, not OPNsense) and all fine again.

lol

[EricPerl]

VLAN configuration errors should result in complete communication failures, not what "dropped packets" sounds like.

You can start with the easier use cases, test enough (can access this, not that), rinse and repeat.
Proxmox + VMs would be a second step IMO.

[meyergru]

While they should, I have seen stranger things than bad implementations of VLANs in non-enterprise switches or NIC drivers. Also, there is another level of networking in place, namely a hypervisor, which probably does all VLAN filtering in software and might drop some packets...

[EricPerl]

The OP is not really using advanced features.
There are plenty of quirks in Tp-link HW/SW but they also tend to be all or nothing.
I'm definitely not going to take a bet on their stuff though...

I totally agree wrt Proxmox though.
That's why I recommended getting comfortable with the basic VLAN use cases first (e.g. the Ubuntu desktop).
There was a learning curve when I jumped on the Proxmox train ~9 months ago.