It's no surprise that Linux makes a great router and firewall. A lesser-known fact is that you also can use Linux as an Ethernet bridge and VLAN switch, and that these features are similarly powerful, ...
VLANs break a physical LAN into several logical broadcast domains. Each LAN station hears traffic sent by its own VLAN but receives nothing from stations in other VLANs -- not even from those ...
The real question is do you want this device to be pushing/popping STags or just passing them along. Most ASICs shouldn't have an issue with the latter but if you need it to manipulate tags it's ...