Cisco Cisco SF302-08PP 8-port 10 100 PoE+ Managed Switch Referencia técnica
DHCP Snooping and ARP Inspection Commands
726
78-21485-01 Command Line Interface Reference Guide
42
no ip dhcp snooping trust
Parameters
N/A
Default Configuration
The interface is untrusted.
Command Mode
Interface Configuration (Ethernet, Port-channel) 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.
switches or routers. Configure the ports that are connected to DHCP clients as
untrusted.
Example
The following example configures gi5 as trusted for DHCP Snooping.
Console(config)#
interface gi5
Console(config-if)#
ip dhcp snooping trust
42.4
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.
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
Parameters
N/A