This is useful if you believe there is a rogue DHCP Server causing problems for your clients.
The dhcploc command lets you see a computer’s DHCP traffic for a broadcast domain. Simply pass in the IP address of the machine from which you are running the command:
> dhcploc 192.168.32.24
Windows 2000 and Windows Server 2003-based DHCP servers that belong to an Active Directory domain must be authorized before they can give out leases to clients. This feature helps reduce the danger of a rogue Windows 2000 or Windows Server 2003 DHCP Server that an end-user sets up, perhaps unintentionally. A rogue DHCP Server can provide incorrect lease information or deny lease requests altogether, ultimately causing a denial of service for clients on your network.
The DHCP Server service is an optional Windows Component, so you can install it using the Add or Remove Programs applet in the Control Panel. There are no configuration options when you install the DHCP Server, so installation is a breeze. After you’ve installed the service, you’ll need to authorize the server, if you have an Active Directory environment.