HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Services Command Referen - Page 86

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. Examples # Disable the duplicate address. system-view [Sysname] undo dhcp client dad enable dhcp client identifier Use dhcp client identifier to configure a DHCP client ID for an interface. Use undo dhcp client identifier to restore the default. Syntax dhcp client identifier { ascii string | hex string | mac interface-type interface-number } undo dhcp client identifier Default An interface generates an ASCII character string as the DHCP client ID based on its MAC address and the interface name. Views Interface view Predefined user roles network-admin 78