DHCP ARP Inspection
recently our student ask question and her questions is this. "in some case computer receive IP from DHCP server but in the middle people change the ip address from dynamic to static and it take a issue on the network.
He want to prevent the static IP address configuration action by human on the network.
the answer is simple to do this we need two steps configuration.
step one: change ARP mode to reply-only on specific interface that the DHCP server is running.
step two: select the Add ARP For lease check box on the DHCP server properties.
with these actions we forced users to gives IP address just from the DHCP server.