Dell PowerEdge VRTX - Manual (Page 625)

DHCP Snooping Commands 625
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Plasma-ARC
2+3\new_system_mifs_ARC2_latest\DHCP_Snooping.fm
D E LL CO N F I D E N T IA L – P R E L I M I N A RY 4 / 3 / 14 - F O R PR O O F O N LY
Syntax
ip dhcp snooping trust
no ip dhcp snooping trust
Parameters
N/A
Default Configuration
The interface is untrusted.
Command Mode
Interface (Ethernet, Port Channel) Configuration mode
User Guidelines
Configure as trusted the ports that are connected to a DHCP server or to
other switches or routers. Configure the ports that are connected to DHCP
clients as untrusted.
Example
The following example configures gi0/4 as trusted for DHCP Snooping.
console(config)# interface gi0/4
console(config-if)# ip dhcp snooping trust
ip dhcp snooping information option allowed-
untrusted
Use the ip dhcp snooping information option allowed-untrusted Global
Configuration mode command to allow a device to accept DHCP packets
with option-82 information from an untrusted port. Use the no form of this
command to drop these packets from an untrusted port.
Syntax
ip dhcp snooping information option allowed-untrusted
no ip dhcp snooping information option allowed-untrusted