Switchport

Setting/changing Native VLAN on a trunk port:

Switch(config-if)#switchport trunk native ?

vlan Set native VLAN when interface is in trunking mode

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

<1-1005> VLAN ID of the native VLAN when this port is in trunking mode

OR

Switch(config-if)#switchport native ?

vlan Set native VLAN when interface is in trunking mode

Switch(config-if)#switchport native vlan ?

<1-1005> VLAN ID of the native VLAN when this port is in trunking mode

Verification:

Switch#show int f0/1 switchport

Name: Fa0/1

Switchport: Enabled

Administrative Mode: dynamic auto

Operational Mode: down

Administrative Trunking Encapsulation: negotiated

Operational Trunking Encapsulation: native

Negotiation of Trunking: On

Access Mode VLAN: 1 (default)

Trunking Native Mode VLAN: 1 (default)

Voice VLAN: none

Administrative private-vlan host-association: none

Administrative private-vlan mapping: none

Administrative private-vlan trunk native VLAN: none

Administrative private-vlan trunk encapsulation: dot1q

Administrative private-vlan trunk normal VLANs: none

Administrative private-vlan trunk private VLANs: none

Operational private-vlan: none

Trunking VLANs Enabled: All

Pruning VLANs Enabled: 2-1001

Capture Mode Disabled

Capture VLANs Allowed: ALL

Protected: false

Unknown unicast blocked: disabled

Unknown multicast blocked: disabled

Appliance trust: none

Router subinterface configuration for Native VLAN: 

Router(config-subif)#encapsulation dot1q 10 ?

native Make this as native vlan

<cr>

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

WORD VLAN IDs of the allowed VLANs when this port is 

in trunking mode

add add VLANs to the current list

all all VLANs

except all VLANs except the following

none no VLANs

remove remove VLANs from the current list