A packet switching device simultaneously supports a tagged mode and an untagged mode. A plurality of ports of the packet switching device perform packet delivery and reception, and a port map defines VIDs and operating modes of the ports. Each port operates in tagged or untagged mode, and is associated with at least one VID. The range of VIDs in untagged mode is bounded in a first range, the range of VIDs in tagged mode is bounded in a second range, and the first and second ranges are not overlapped. The plurality of ports comprises a first port operating in untagged mode, associated with a first VID within the first range. The first port receives a first packet, and the packet switching device searches the port map to locate other ports having the first VID and forwards the first packet thereto.