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Ip dhcp-relay agent-option checking – Allied Telesis AT-8100 Series User Manual

Page 497

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AT-8100 Switch Command Line User’s Guide

497

IP DHCP-RELAY AGENT-OPTION CHECKING

Syntax

ip dhcp-relay agent-option checking

Parameters

None

Mode

Global Configuration Mode

Description

Use this command to configure the DHCP relay agent to discard DHCP
requests that have option 82 information and a null IP address (0.0.0.0) in
the giaddr fields. You may use this feature to protect the network from fake
or suspicious DHCP requests.

Confirmation Command

“SHOW IP DHCP-RELAY” on page 509

Example

This example configures the DHCP relay agent to discard DHCP requests
with option 82 information and a null IP address (0.0.0.0) in the giaddr
fields:

awplus> enable
awplus# configure terminal
awplus(config)# ip dhcp-relay agent-option checking