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The big news in DHCP is dynamic address allocation, along with the concept of address leasing. It is this new functionality that makes DHCP significantly more complex than its predecessor, the Boot Protocol (BOOTP). BOOTP is a simple request/reply protocol—a server only needs to look up a client's hardware address and send back the client's assigned IP address and other parameters. In contrast, DHCP clients and servers must do much more to carry out both parameter exchange and the many tasks needed to manage IP address leasing.

In this chapter, I delve into the nuts and bolts of how DHCP operates. I ...

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