DHCP snooping
| conf t |
| enter into config mode |
| vlan 99 |
| create a new vlan and enter into vlan configuration mode |
| description management |
| add vlan description |
| exit |
| exit from vlan config mode |
| ip dhcp snooping vlan 99 |
| setup snooping |
| int fa0/1 |
| ip dhcp snooping trust |
| exit |
| exit from config mode |