On SW1, we run show vlan brief and see that there are three additional vlans in use: SW1#show vlan br VLAN Name Status Ports —- ——————————– ——— 1 default active Fa0/1, Fa0/2, Fa0/3, Fa0/4 Fa0/5, Fa0/6, Fa0/7, Fa0/8 Fa0/9, Fa0/10 10 VLAN0010 active 20 VLAN0020 active 30 VLAN0030 active We want to totally erase the [...]