5.3.2: You can manually enter the IP address on a host, or a host can dynamically acquire the address through DHCP. Typically, a DHCP client requests addressing information from a DHCP server on a network. A PC acts as a DHCP client for an integrated services router (ISR), and the ISR can act as a DHCP client for the ISP.
5.3.3: A client that needs an IP address completes the following steps to obtain an IP address on a DHCP network:
1. The client sends a DHCP Discover message with a destination IP address of 255.255.255.255 and a destination MAC address of FF-FF-FF-FF-FF-FF.
2. This DHCP Discover message broadcasts over the network, and the DHCP server replies with a DHCP Offer, including a suggested IP address.