Okay, I think I've got it figured out. Proxmox was throwing me for a loop. The server hosts have the ability to handle VLAN's natively (or choose not to) but it's more than a simple 'flicking the...

@MR.S Thanks for your insight. Both the 8411 and the SG3210-XHP are fully configured and all other VLAN's work. The 8411 only has a WAN connection to the internet, and a single uplink to the SG3210...

Hey all, I'm new here but I'll try to keep this as short as possible with relevant info. I'm hoping this is simply a "You're dumb, here's why this isn't working" thing. I came from a Fortinet...