DELL 8132 ユーザーズマニュアル

DHCP Snooping Commands

DHCP Snooping is disabled by default.

Global Configuration mode

In order to enable DHCP snooping, perform the following three steps:

1 Enable DHCP Snooping globally.
2 Enable DHCP Snooping per VLAN.
3 Set DHCP Snooping trusted port on the port in the DHCP server 

direction.

The following configuration enables DHCP snooping on VLAN 1 for a switch 

connected to a DHCP server over interface gi1/0/4:

console(config)#ip dhcp snooping

console(config-if-vlan1)#ip dhcp snooping

console(config-if-vlan1)#exit

console(config)#interface gi1/0/4

console(config-if-Gi1/0/4)#ip dhcp snooping trust

Use the ip dhcp snooping binding command to configure a static DHCP 

Snooping binding. Use the “no” form of this command to remove a static 

binding.

ip dhcp snooping binding 

mac-address vlan vlan-id ip-address interface 

{gigabitethernet unit/slot/port | tengigabitethernet unit/slot/port

 | 

fortygigabitethernet unit/slot/port}
no ip dhcp snooping binding mac-address

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