DHCP server on a Cisco router or switch.
DHCP is an application layer protocol used to distribute network configuration parameters, such as IP addresses, subnet masks, default gateways, etc.. to devices on the network. a DHCP client send request to a DHCP server. A DHCP server is assigns network parameters (IP address) to the DHCP client from configured IP addresses pool.
Cisco router and switches can be configured as a DHCP server, In this post I will walks you through the configuration process.