Ip Dhcp Snooping Trust; Ip Dhcp Information Option Allowed-Untrusted - Alcatel OmniStack LS 6248 User Manual

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Command Line Interface

ip dhcp snooping trust

The ip dhcp snooping trust Interface Configuration (Ethernet, Port-channel) mode
command configures a port as trusted for DHCP snooping purposes. To return to the
default configuration, use the no form of this command.
Syntax
ip dhcp snooping trust
no ip dhcp snooping trust
Default Configuration
The interface is untrusted.
Command Mode
Interface Configuration (Ethernet, Port-channel) mode
User Guidelines
Configure as trusted ports, which are connected to a DHCP server or to other
switches or routers. Configure as untrusted ports those that are connected to
DHCP clients.
Example
The following example configures port 1/e16 as trusted for DHCP snooping.
Console # (config)# interface 1/e16
Console # (config-if)# ip dhcp snooping trust
Console # (config-if)#

ip dhcp information option allowed-untrusted

The ip dhcp information option allowed-untrusted Global Configuration mode
command on a switch configures it to accept DHCP packets with option-82
information from an untrusted port. To configure the switch to drop these packets
from an untrusted port, use the no form of this command.
Syntax
ip dhcp information option allowed-untrusted
no ip dhcp information option allowed-untrusted
Default Configuration
Discard DHCP packets with option-82 information from an untrusted port.
Command Mode
Global Configuration mode
User Guidelines
There are no user guidelines for this command.
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