Cisco 300 Series User Manual

DHCP Snooping Commands
OL-32830-01 Command Line Interface Reference Guide 312
13
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 gi14 as trusted for DHCP Snooping.
switchxxxxxx(config)# interface gi1 4
switchxxxxxx(config-if)# ip dhcp snooping trust
13.4 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

Cisco 300 Series Specifications

General

Model	Cisco 300 Series
Category	Switch
Dimensions	Varies by model
Weight	Varies by model
Power over Ethernet (PoE)	Available on select models
Management	Web-based GUI, SNMP, CLI
VLANs	Up to 256
Security Features	ACLs, 802.1X, Port Security
Humidity	10% to 90% non-condensing
Ports	8, 16, 24, 48