The Dynamic Host Configuration Protocol is used by computers for requesting Internet Protocol parameters, such as an IP address from a network server. The protocol operates based on the client-server model. DHCP is very common in all modern networks[1] ranging in size from home networks to large campus networks and regional Internet service provider
networks. Most residential network routers receive a globally unique IP
address within the provider network. Within a local network, DHCP
assigns a local IP address to devices connected to the local network.
When a computer or other networked device connects to a network, its DHCP client software in the operating system sends a broadcast
query requesting necessary information. Any DHCP server on the network
may service the request. The DHCP server manages a pool of IP addresses
and information about client configuration parameters such as default gateway, domain name, the name servers, time servers.
On receiving a request, the server may respond with specific
information for each client, as previously configured by an
administrator, or with a specific address and any other information
valid for the entire network, and the time period for which the
allocation (
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