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6.2 VLAN Port Membership Modes
A switchport can be assigned to a VLAN by designating a membership mode. The membership mode
determines the kind of traffic the port carries and the number of VLANs to which it can belong. The
membership modes are as follows:
• Static Access
• Trunk (IEEE 802.1Q)
• Dot1q Tunnel
6.2.1 Static Access
A static-access port can belong to one VLAN and is manually assigned to that VLAN. Use the following
commands to assign a static-access port to a VLAN:
Command Purpose
Router(config)# interface IFNAME
Enter the interface name to access the interface
configuration node.
Router(config-if-IFNAME)# switchport
mode access
This command designates the interface as static-
access mode.
Router(config-if-IFNAME)# switchport
access vlan vid
This command assigns the interface to the VLAN
VID.
Use the no form of this command to reset the
static-access VLAN to default VID 1.
Router(config-if-IFNAME)# end
Return to Enable node.
6.2.2 Trunk (IEEE 802.1Q)
By default, a trunk port is a member of all VLANs. However, membership can be limited by configuring an
VLAN Allowed List.
Use the following commands to assign an IEEE 802.1q trunk port:
Command Purpose
Router(config)# interface IFNAME
Enter the interface name to access the interface
configuration node.
Router(config-if-IFNAME)# switchport
mode trunk
This command designates the interface as IEEE
802.1q trunk-access mode.
Use the
no
form of this command to reset to the
default of static-access mode.
Router(config-if-IFNAME)# switchport
trunk native vlan vid
This command will assign the native VLAN for
the trunk port.
Use the
no
form of this command to reset the
native VLAN to VID 1.
Router(config-if-IFNAME)# end
Return to Enable node.