User Manual

DHCPDECLINE A client sends this message to the server in response to a DHCPACK if the

configuration parameters are unacceptable; for example, if the offered address is

already in use. In this case, the client starts the configuration process over by

sending a DHCPDISCOVER.

DHCPINFORM A client uses this message to request configuration parameters when it assigned an

IP address manually rather than with DHCP. The server responds by unicast.

DHCPNAK A server sends this message to the client if it is not able to fulfill a DHCPREQUEST;

for example, if the requested address is already in use. In this case, the client starts

the configuration process over by sending a DHCPDISCOVER.

DHCPRELEASE A DHCP client sends this message when it is stopped forcefully to return its IP

address to the server.

Figure 5. Assigning Network Parameters using DHCP

Dynamic Host Configuration Protocol (DHCP)