|Client broadcast to locate available servers.
|Server to client in response to DHCPDISCOVER with offer of configuration parameters.
|Client message to servers either (a) requesting offered parameters from one server and implicitly declining offers from all others, (b) confirming correctness of previously allocated address after, e.g., system reboot, or (c) extending the lease on a particular network address.
|Server to client with configuration parameters, including committed network address.
|Server to client indicating client's notion of network address is incorrect (e.g., client has moved to new subnet) or client's lease as expired
|Client to server indicating network address is already in use.
|Client to server relinquishing network address and cancelling remaining lease.
|Client to server, asking only for local configuration parameters; client already has externally configured network address.
About the authors