Dynamic Host Configuration Protocol DHCP

Every device that connects to a network needs a unique IP address. Network administrators assign static IP addresses to routers, servers, printers, and other network devices whose locations (physical and logical) are not likely to change. These are usually devices that provide services to users and devices on the network; therefore, the addresses assigned to them should remain constant

Introducing a Dynamic Host Configuration Protocol (DHCP) server to the local network simplifies IP address assignment to both desktop and mobile devices. Using a centralized DHCP server enables organizations to administer all dynamic IP address assignments from a single server. This practice makes IP address management more effective and ensures consistency across the organization, including branch offices.

Address Request Process

Address Renewal Process

DHCP Configurations & Options 1.Define a Pool Name 2.Exclude addresses if you have to 3.Configure the network 4.Give it a domain name(optional) 5.Give it a DNS Server (optional) 6.If you have voice devices, redirect clients to TFTP server for config. files.

Router>en Router#conf t Router(config)# ip dhcp pool Router(config)# ip dhcp excluded-address <xxx.xxx.xxx.xxx yyy.yyy.yyy.yyy Router(config)#ip dhcp excluded-address Router(dhcp-config)#network Router(dhcp-config)#default-router Router(dhcp-config)#dns-server