Kyle Pericak

"It works in my environment."

Thu 23 July 2020

VLAN Tagging Mac Thunderbolt NIC IP Traffic

Posted by Kyle Pericak in systems administration   

Sometimes you want to test a switch's trunk port without having to carve our an access port to plug your MacBook into.

Here's how:

  1. Open System Preferences
  2. Click Network
  3. Select your Thunderbolt Ethernet adapter
  4. Click the gear below the sidebar listing the interfaces
  5. Click Manage Virtual Interfaces
  6. Click the + button
  7. New VLAN
  8. Enter a name, such as "VLAN-200"
  9. Enter a VLAN ID in the Tag field, such as 200
  10. Choose Tunderbolt Ethernet for your Interface
  11. Click Create
  12. On the sidebar, your new vlan ("VLAN-200") is now an option. Click it.
  13. Configure as needed.

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