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Switch(Config-ethernet1/8)#switchport mode access
Switch(Config-ethernet1/8)#exit
5.2.2.5 switchport trunk allowed vlan
Command: switchport trunk allowed vlan {<vlan-list>|all}
no switchport trunk allowed vlan
Function: Set trunk port to allow VLAN traffic; the “no switchport trunk allowed vlan”
command restores the default setting.
Parameter: <vlan-list> is the list of VLANs allowed to pass through in the specified Trunk
port; keyword “all” indicate allow all VLAN traffic on the Trunk port.
Command mode: Interface Mode
Default: Trunk port allows all VLAN traffic by default.
Usage Guide: The user can use this command to set the VLAN traffic allowed to pass
though the trunk port; traffic of VLANs not included are prohibited.
Example: Set Trunk port to allow traffic of VLAN1, 3, 5-20.
Switch(Config)#interface ethernet 1/5
Switch(Config-ethernet1/5)#switchport mode trunk
Switch(Config-ethernet1/5)#switchport trunk allowed vlan 1;3;5-20
Switch(Config-ethernet1/5)#exit
5.2.2.6 switchport trunk native vlan
Command: switchport trunk native vlan <vlan-id>
no switchport trunk native vlan
Function: Set the PVID for Trunk port; the “no switchport trunk native vlan” command
restores the default setting.
Parameter: <vlan-id> is the PVID for Trunk port.
Command mode: Interface Mode
Default: The default PVID of Trunk port is 1.
Usage Guide: PVID concept is defined in 802.1Q. PVID in Trunk port is used to tag
untagged frames. When a untagged frame enters a Trunk port, the port will tag the
untagged frame with the native PVID set with this command for VLAN forwarding.
Example: Set the native vlan for a Trunk port to 100.
Switch(Config)#interface ethernet 1/5
Switch(Config-ethernet1/5)#switchport mode trunk
Switch(Config-ethernet1/5)#switchport trunk native vlan 100