以Cisco交换机为例:

switch(config)#ip dhcp snooping

switch(config)#ip dhcp snooping vlan 10

/*在Vlan10启用dhcp snooping

switch(config-if)#ip dhcp snooping limit rate 10

/*dhcp包的转发速率,超过后接口就shutdown,默认不限制;

switch(config-if)#ip dhcp snooping trust switch#ip dhcp snooping binding 0009.3452.3ea4 vlan 7 192.168.10.5 interface gi1/0/10

switch(config)#ip dhcp snooping database tftp:// 10.1.1.1/dhcp_table

show ip dhcp snooping