FortiSwitch ports process tagged and untagged Ethernet frames. Untagged frames do not carry any VLAN information.
Tagged frames include an additional header (the 802.1Q header) after the Source MAC address. This header includes a VLAN ID. This allows the VLAN value to be transmitted between switches.
The FortiSwitch unit provides port parameters to configure and manage VLAN tagging.
This section covers the following topics: