Configuring VLAN trunks

This section describes how to configure VLAN trunks on Cisco switches:

• Configuring IEEE 802.1Q trunk link: Enter the following commands to configure a trunk link:

Switch(config)# interface   <interface-ID>
Switch(config-if)# switchport mode trunk
Switch(config-if)# exit
Switch(config)#

• Configuring a native VLAN as an IEEE 802.1Q trunk link: Enter the following commands to configure a native VLAN for untagged 802.1Q frames:

Switch(config)# interface   <interface-ID>
Switch(config-if)# switchport trunk native vlan   <vlan-ID>
Switch(config-if)# exit
Switch(config)#

• Configuring VLANs to be allowed on the trunk link: Enter the following commands to configure the list of VLANs to be allowed on the trunk link:

Switch(config)# interface   <interface-ID>
Switch(config-if)# switchport trunk allowed vlan   <vlan list>
Switch(config-if)# exit
Switch(config)#

• Configuring the appropriate trunk mode: Enter the following commands to set the trunk in the...