Configuring VLANs and Trunk Links on Cisco Switches VLANs allow administrators to segment networks logically while using the same physical infrastructure. Create VLANs Switch(config)# vlan 10 Switch(config-vlan)# name SALES Switch(config)# vlan 20 Switch(config-vlan)# name ENGINEERING Assign Access Ports Switch(config)# interface GigabitEthernet0/2 Switch(config-if)# switchport mode access Switch(config-if)# switchport access vlan 10 Configure Trunk Port Switch(config)# interface GigabitEthernet0/1 Switch(config-if)# switchport mode trunk Switch(config-if)# switchport trunk encapsulation dot1q Verify VLAN Configuration show vlan brief show interfaces trunk