A VLAN packet is a data frame that includes information for a Virtual Local Area Network (VLAN) that allows devices to communicate within a specific segment of a network. The VLAN packet includes a VLAN tag added to the Ethernet frame that identifies the VLAN to which the packet belongs.
The VLAN tag is inserted between the source MAC address and the EtherType fields in the Ethernet frame. This enables network devices, such as switches and routers, to separate traffic between different VLANs while using the same physical network infrastructure.
VLAN tags may be trunked, or statically assigned. Trunked VLAN tags carries traffic for multiple VLANs on a single physical link. Statically assigned VLANs are assigned at the port of the network device. This could be the switch, or any end-node device making that port only belong to one VLAN.
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