Implementation of DHCP in cisco packet tracer

Dynamic Host Configuration Protocol (DHCP) is an application layer protocol used to distribute various network configuration parameters to devices on a TCP/IP network. – IP addresses, subnet masks, default gateways, DNS servers, etc

Procedure:

1.      Create the above topology shown using the cisco packet tracer work space.

2.      Assign IP address to the gig interface as following:

3.      A Cisco router can be configured as a DHCP server. Here are the steps:

·         Exclude IP addresses from being assigned by DHCP by using the ip dhcp excluded-address FIRST_IP LAST_IP

·         Create a new DHCP pool with the ip dhcp pool NAME command.

·         Define a subnet that will be used to assign IP addresses to hosts with the network SUBNET SUBNET_MASK command.

·         Define the default gateway with the default-router IP command.

·         Define the DNS server with the dns-server IP address command.

·         (Optional) Define the DNS domain name by using the ip domain-name NAME command.

·         (Optional) Define the lease duration by using the lease DAYS HOURS MINUTES command. If you don’t specify this argument, the default lease time of 24 hours will be used.

 

Router(config-if)#ip dhcp pool IP01

Router(dhcp-config)#net 192.168.100.0 255.255.255.0

Router(dhcp-config)#exit

Router(config)#ip dhcp exec 192.168.100.1 192.168.100.15

^

% Invalid input detected at '^' marker.

Router(config)#ip dhcp exc 192.168.100.1 192.168.100.1

Router(config)#exit

Router#

%SYS-5-CONFIG_I: Configured from console by console

4.      Now click on the generic pc 0 , go to IP configuration and select DHCP.

 Result:

DHCP server has been implemented: