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Trunk Configuration Commands

Trunks work on OSI layer 2 and carry traffic for all VLANs

Task

IOS Command

Enter global configuration mode.

Switch# configure terminal

Enter interface configuration mode.

Switch(config)# interface interface-id

Set the port to permanent trunking mode.

Switch(config-if)# switchport mode trunk

Sets the native VLAN to something other than VLAN 1.

Switch(config-if)# switchport trunk native vlan vlan-id

Specify the list of VLANs to be allowed on the trunk link.

Switch(config-if)# switchport trunk allowed vlan vlan-list

Return to the privileged EXEC mode.

Switch(config-if)# end