1296
Command Reference for AT-IX5-28GPX High Availability, High Power Video Surveillance PoE Switch
C613-50057-01 REV A
AlliedWare Plus™ Operating System - Version 5.4.5-0.x
DHCP S
NOOPING
C
OMMANDS
IP
DHCP
SNOOPING
AGENT
-
OPTION
ALLOW
-
UNTRUSTED
ip dhcp snooping agent-option
allow-untrusted
Overview
Use this command to enable DHCP Relay Agent Option 82 information reception
on untrusted ports. When this is enabled, the switch accepts incoming DHCP
packets that contain DHCP Relay Agent Option 82 information on untrusted ports.
Use the
no
variant of this command to disable DHCP Relay Agent Option 82
information reception on untrusted ports.
Syntax
ip dhcp snooping agent-option allow-untrusted
no ip dhcp snooping agent-option allow-untrusted
Default
Disabled
Mode
Global Configuration
Usage
If the switch is connected via untrusted ports to edge switches that insert DHCP
Relay Agent Option 82 information into DHCP packets, you may need to allow
these DHCP packets through the untrusted ports, by using this command.
When this is disabled (default), the switch treats incoming DHCP packets on
untrusted ports that contain DHCP Relay Agent Option 82 information as DHCP
snooping violations: it drops them and applies any violation action specified by the
ip dhcp snooping violation
command. The switch stores statistics for packets
dropped; to display these statistics, use the
show ip dhcp snooping statistics
command.
Example
To enable DHCP snooping Option 82 information reception on untrusted ports,
use the commands:
awplus#
configure terminal
awplus(config)#
ip dhcp snooping agent-option allow-untrusted
Related
Commands
ip dhcp snooping agent-option
ip dhcp snooping violation
show ip dhcp snooping
show ip dhcp snooping statistics