DHCP S
NOOPING
C
OMMANDS
4-275
Command Mode
Global Configuration
Command Usage
If MAC address verification is enabled, and the source MAC address in
the Ethernet header of the packet is not same as the client’s hardware
address in the DHCP packet, the packet is dropped.
Example
This example enables MAC address verification.
Related Commands
ip dhcp snooping (4 -270)
ip dhcp snooping vlan (4 -272)
ip dhcp snooping trust (4 -273)
ip dhcp snooping information option
This command enables the DHCP Option 82 information relay for the
switch. Use the no form to disable this function.
Syntax
[no] ip dhcp snooping information option
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
• DHCP provides a relay mechanism for sending information about the
switch and its DHCP clients to the DHCP server. Known as DHCP
Option 82, it allows compatible DHCP servers to use the information
when assigning IP addresses, or to set other services or policies for
clients.
Console(config)#ip dhcp snooping verify mac-address
Console(config)#
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