DHCP is a protocol used for automatic #IPv4 Address assignment. Using this protocol, the network will be able to allot an available IP address to a Network Device# upon requested. It saves up network administrative costs and conserves IP address space.
By using the command ip helper-address {ip-address} on a Router, the router will overrule broadcast rule and get the IP address from the DHCP server instead via DHCP relay agent.
IPv6 provides an easy address autoconfiguration that is similar to of Dynamic Host Configuration Protocol (DHCP), stateless autoconfiguration which provides easier address management and delegation. The advantage of using it compare to its IPv4 counterpart is that it doesn’t require a specialised application or server when providing addresses to simple network devices such as robotic arms in a factory.
The address could be assigned via static method or dynamic method#. For general case, devices that don’t move too much such as servers, Router# and Switch# are assigned with static IP address. Mobile devices like laptop and smartphone should be using dynamic method to get the IP address instead.