Native (Trunk) VLANs and 802.1Q Tagging

802.1Q trunk basics:

• Tagging is typically done on all VLANs
• The use of a native VLAN was designed for legacy use, like the hub in the example
• Unless changed, VLAN1 is the native VLAN (Bad)
• Both ends of a trunk link must be configured with the same native VLAN

Each trunk is configured separately, so it is possible to have a different native VLANs on separate trunks