How do You set up a DHCP in a Cisco router?

The Dynamic Host Configuration Protocol (DHCP) is a standardized network protocol used on Internet Protocol (IP) networks for dynamically distributing network configuration parameters, such as IP addresses for interfaces and services. With DHCP, computers request IP addresses and networking parameters automatically from a DHCP server, reducing the need for a network administrator or a user to configure these settings manually.

Take a scenario as below

• Making Cisco Router as DHCP Server
• Connect Ethernet cable from F 0/0 of router to Switch
• Connect Ethernet cables from switch to Hosts & select option Obtain IP address Automatically in host
• Enter following commands in Router to make it DHCP Server

Router>enable

Router#configure terminal

Router(config)#ip dhcp pool my-dhcp-server

Router(dhcp-config)#network 10.0.0.0 255.0.0.0

Router(dhcp-config)#default-router 10.0.0.1

Router(dhcp-config)#dns-server 8.8.8.8

Router(dhcp-config)#exit

• If you want to exclude some IP addresses enter the following command so that DHCP server avoid giving these address to host

Router(config)#ip dhcp excluded-address 10.0.0.1 10.0.0.10

Thank you