There are a number of ways to change VLAN membership:
- re-renter switchport access vlan vlan-id command
- use the no switchport-access vlan to place the interface back in VLAN 1
Use the show vlan brief or show interface fa0/18 switchport commands to verify the corret VLAN assosiciation
alle ports in vlan 99 moven int fa0/1 int range fa/0/0 - 24 switchpower access vlan 99