VLANInterface Config

switchport access vlan [vlan-id]

Assigns a specific VLAN to an access port, placing the port in that VLAN for untagged traffic.

Syntax·Interface Config

switchport access vlan [vlan-id]

When to Use This Command

Assigning a desktop user to VLAN 10 on a switch port
Configuring a port for a printer in a separate VLAN
Setting up a VoIP phone port with a data VLAN
Reassigning a port from default VLAN 1 to a user VLAN

Command Examples

Assign port to VLAN 10

Switch(config-if)# switchport access vlan 10

No output is generated on success. Use 'show interfaces status' or 'show vlan brief' to verify.

Verify VLAN assignment

show interfaces status

Port      Name               Status       Vlan    Duplex  Speed Type
Gi0/1     Desktop-PC         connected    10      a-full  a-100 10/100/1000BaseTX
Gi0/2     Printer            connected    20      a-full  a-100 10/100/1000BaseTX

The 'Vlan' column shows the access VLAN assigned to each port. Gi0/1 is in VLAN 10, Gi0/2 in VLAN 20.

Understanding the Output

The command itself produces no output on success. To verify, use 'show interfaces status' or 'show vlan brief'. In 'show interfaces status', the 'Vlan' column indicates the access VLAN for ports in access mode. A value of '1' is default; any other number indicates a configured access VLAN. In 'show vlan brief', the port appears under the assigned VLAN's list. Ensure the VLAN exists in the VLAN database; otherwise, the port will be inactive until the VLAN is created.

CCNA Exam Tips

Remember that 'switchport access vlan' only works on ports in access mode; trunk ports use 'switchport trunk allowed vlan'.

If the VLAN does not exist, the port will not forward traffic until the VLAN is created.

The default access VLAN is 1; changing it to another VLAN removes the port from VLAN 1.

CCNA 200-301 may test the difference between access and trunk ports and the commands to configure each.

Common Mistakes

Forgetting to set the port to access mode with 'switchport mode access' before assigning a VLAN.

Assigning a VLAN that hasn't been created yet, causing the port to be in an inactive state.

Using 'switchport access vlan' on a trunk port, which is ignored for trunking.

Related Commands

show interfaces status

Displays a summary of all switch interfaces including their status, VLAN, duplex, speed, and type, used to quickly verify interface connectivity and configuration.

show vlan brief

Displays a summary of all VLANs configured on the switch, including VLAN ID, name, status, and ports, used to quickly verify VLAN configuration and port assignments.

switchport mode access

Configures a switch interface as an access port, placing it in a single VLAN and removing any trunking functionality.

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