A Few Easy Steps: Cisco Switch, Setup Trunk Port

In this session of A Few Easy Steps, we will Setup Trunk Port on a Cisco Switch.
In General this will work on any Cisco Switch.

Session Prerequisites:

  • You have terminal or console access to your Cisco device.

Session Assumptions:

  • We are using Interface Fastethernet 0/14
  • We are trunking All VLANs
  • Native VLAN is 200
  • We are building a dot1q trunk

Our goals of this session are:

  • Change port trunk encapsulation
  • Change Switchport mode
  • Allow all VLANs on Trunk
  • Set native VLAN


Change port trunk encapsulation

!
conf t
!
interface fastethernet 0/14
!
switchport trunk encapsulation dot1q
!
end
!
copy running-config startup-config

Change Switchport mode

!
conf t
!
interface fastethernet 0/14
switchport mode trunk
end
!
copy running-config startup-config

Allow all VLANs on Trunk

!
conf t
!
interface fastethernet 0/14
!
switchport trunk allow vlan all
!
end
!
copy running-config startup-config

Set native VLAN

!
conf t
!
interface fastethernet 0/14
!
switchport trunk native vlan 200
 !
end
!
copy running-config startup-config

Entire Session:

!
conf t
!
interface fastethernet 0/14
!
switchport trunk encapsulation dot1q
!
switchport mode trunk
!
switchport trunk allow vlan all
!
switchport trunk native vlan 200
!
end
!
copy running-config startup-config

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