A network administrator needs to manually configure a static IEEE 802.1Q trunk on a Cisco Catalyst switch interface (GigabitEthernet0/1), set the native VLAN to VLAN 50, and disable Dynamic Trunking Protocol (DTP) frame transmission. What is the correct sequence of Cisco IOS configuration commands to accomplish this task?
- 1interface GigabitEthernet0/1
- 2switchport mode trunk
- 3switchport trunk native vlan 50
- 4switchport nonegotiate
Answer
The correct sequence begins with entering interface configuration mode (`interface GigabitEthernet0/1`), explicitly setting the switchport mode to static trunk (`switchport mode trunk`), specifying the untagged native VLAN (`switchport trunk native vlan 50`), and finally disabling DTP frame negotiation (`switchport nonegotiate`).
To properly configure an 802.1Q trunk link with a custom native VLAN and suppressed DTP, an engineer must first enter interface configuration mode (`interface GigabitEthernet0/1`). Next, the port operational mode must be set to static trunking (`switchport mode trunk`). Once the port is in static trunk mode, the native VLAN can be configured (`switchport trunk native vlan 50`), followed by disabling DTP negotiations (`switchport nonegotiate`).
Step-by-Step Solution
Key Concept
Static IEEE 802.1Q trunk configuration and DTP negotiation suppression on Cisco IOS switchports