Dell PowerConnect 6224 Command Line Interface Manual page 264

Example
console(config-if-1/g1)#ip dhcp snooping trust
console(config-if-1/g1)#no ip dhcp snooping trust
ip dhcp snooping verify mac-address
Use the ip dhcp snooping verify mac-address command to enable the
verification of the source MAC address with the client MAC address in the
received DHCP message. Use the "no" form of this command to disable
verification of the source MAC address.
Syntax
ip dhcp snooping verify mac-address
no ip dhcp snooping verify mac-address
Default Configuration
Source MAC address verification is enabled by default.
Command Mode
Global Configuration mode
User Guidelines
There are no user guidelines for this command.
Example
console(config)#ip dhcp snooping verify mac-address
show ip dhcp snooping
Use the show ip dhcp snooping command to display the DHCP snooping
global and per port configuration.
264
DHCP Snooping Commands