Dynamic Host Configuration Protocol. It is used to Assign IP address automatically to the Client Machine.
DHCP is a protocol used by networked computers (clients) to obtain IP addresses and other parameters such as the default gateway, subnet mask, and IP addresses of DNS servers from a DHCP server. It facilitates access to a network because these settings would otherwise have to be made manually for the client to participate in the network.
DHCP operations fall into four basic phases. These phases are IP lease request, IP lease offer, IP lease selection, and IP lease acknowledgement
DHCP discovery
DHCP offers
DHCP requests
DHCP acknowledgement
DHCP, like BOOTP runs over UDP, utilizing ports 67 and 68.
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