About VLAN Tagging

Multiple VLANs can be connected through a single cable using the VLAN tagging feature. A VLAN tag is a unique identifier (between 1 and 4094) included in the 802.1Q frame header that corresponds to the ID of the VLAN to which the frame belongs. When a switch receives a tagged frame, it forwards that frame to the appropriate VLAN. A tagged frame belongs to the VLAN specified by the tag. An untagged frame belongs to the default VLAN. The array supports both tagged and untagged traffic on the same interface.