HP MSR2000/3000/4000 Router Series Layer 3 - IP Services Command Reference

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reset dhcp relay statistics
Use reset dhcp relay statistics to clear relay agent statistics.
Syntax
reset dhcp relay statistics [ interface interface-type interface-number ]
Views
User view
Predefined user roles
network-admin
Parameters
interface interface-type interface-number: Clears DHCP relay agent statistics on the specified interface.
If you do not specify any interface, this command clears all DHCP relay agent statistics.
Examples
# Clear all DHCP relay agent statistics.
<Sysname> reset dhcp relay statistics
Related commands
display dhcp relay statistics
DHCP client commands
dhcp client dad enable
Use dhcp client dad enable to enable duplicate address detection.
Use undo dhcp client dad enable to disable duplicate address detection.
Syntax
dhcp client dad enable
undo dhcp client dad enable
Default
The duplicate address detection feature is enabled on an interface.
Views
System view
Predefined user roles
network-admin
Usage guidelines
DHCP client detects IP address conflict through ARP packets. An attacker can act as the IP address owner
to send an ARP reply, which makes the client unable to use the IP address assigned by the server. HP
recommends that you disable duplicate address detection when ARP attacks exist on the network.