Switching (VLAN/STP)

switchport mode trunk

Set the port to trunk — carries 802.1Q-tagged frames for multiple VLANs. For switch-switch / switch-router links.

Works on: SwitchMode: iface

Run this command live

Don't just read it — type switchport mode trunk in a real network simulator in your browser and watch it take effect. No install, no account needed to start.

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Frequently asked

What does the "switchport mode trunk" command do?

Set the port to trunk — carries 802.1Q-tagged frames for multiple VLANs. For switch-switch / switch-router links.

More Switching (VLAN/STP) commands

vlan <id>switchport mode access switchport access vlan <id>switchport trunk allowed vlan <list>switchport trunk native vlan <id>interface vlan <id>spanning-tree portfast spanning-tree bpduguard enable spanning-tree mode rapid-pvst

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