Dell N2000, N3000, N4000 - page 757

Configuring the Spanning Tree Protocol 757
console(config-if)#exit
console(config)#interface range gi1/0/1-12
console(config-if)#switchport access vlan 3
console(config-if)#exit
console(config)#interface range gi1/0/1-12
console(config-if)#switchport access vlan 4
console(config-if)#exit