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Difficulty: EasyVLAN Configuration and Access Port Setup

A network administrator needs to explicitly configure interface GigabitEthernet1/0/12 to function strictly as a non-trunking Layer 2 access port on a Cisco Catalyst switch. Which Cisco IOS command must be entered in interface configuration mode to achieve this?

  1. switchport mode accessAnswer
  2. B
    switchport mode trunk
  3. C
    switchport access enable
  4. D
    switchport non-trunk

Answer

The command 'switchport mode access' explicitly configures an interface to operate as a static Layer 2 access port.
The command 'switchport mode access' configures the switch interface to operate purely as an access port, ensuring it handles untagged traffic for a single VLAN and does not form a trunk link with attached devices.

Step-by-Step Solution

1
Identify the requirement
The port must be configured strictly as a static access port (non-trunking).
By default, Cisco switch ports may negotiate trunking via Dynamic Trunking Protocol (DTP).
2
Select the correct Cisco IOS CLI command for setting the operational mode
Use 'switchport mode access'.
Executing 'switchport mode access' under interface configuration mode locks the interface into access mode and prevents trunk formation.

Key Concept

Access Port Interface Mode Configuration
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Topics

VLAN Configuration and Access Port Setup

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