Dhcp Relay Security Address-Check; Dhcp-Server Detect - 3Com 8807 Command Reference Manual

852 C 47: DHCP C C
HAPTER ONFIGURATION OMMANDS
dhcp relay security Syntax
address-check
dhcp relay security address-check { enable | disable }
View
VLAN interface view
Parameter
None
Description
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. .
Example
# 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

dhcp-server detect

Syntax
dhcp server detect
undo dhcp server detect
View
System view
Parameter
None
Description
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.
Example
# Enable fake DHCP server detecting.