In the IP based Ethernet networks, data and voice services are often transmitted simultaneously over the network. Voice traffic, in particular, requires a higher forwarding priority than data traffic.
Have you been told that VLANs are the ultimate solution to your network woes? That they’ll magically secure your infrastructure, eliminate complexity, and solve all your traffic management headaches?
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 ...