3com 8807 Reference Guide

C

HAPTER

 47: DHCP C

ONFIGURATION

 C

OMMANDS

dhcp relay security address-check { enable | disable }

VLAN interface view

None

Use the dhcp relay security address-check enable command to enable security 
address checking on a VLAN interface.

Use the dhcp relay security address-check disable command to disable security 
address checking on a VLAN interface.

The DHCP security feature is disabled on the VLAN interface by default. .

# Enable security address checking on VLAN interface 1.

<SW8800> system-view

 

System View: return to User View with Ctrl+Z.

 

[SW8800]interface vlan-interface 1             

 

[3Com-Vlan-interface1] dhcp relay security address-check enable 

System view

None

Use the dhcp server detect command to enable fake DHCP server detecting.

Use the undo dhcp server detect command to disable fake DHCP server 
detecting.

A private DHCP server in a network also answers IP address request packets and 
issues IP addresses to DHCP clients. However, the IP addresses they issued always 
bring addresses conflicts and cause users cannot access networks. This kind of 
DHCP servers are known as fake DHCP servers.

# Enable fake DHCP server detecting.