How to configure dhcp protocol in CISCO router?

Enabling the Cisco IOS DHCP Server and Relay Agent Features

Router(config)# service dhcp

Excluding IP Addresses

Router(config)# ip dhcp excluded-address low-address [high-address]

Configuring a DHCP Address Pool

Router(config)# ip dhcp pool name

Configuring the DHCP Address Pool Subnet and Mask

Router(dhcp-config)# network network-number [mask | /prefix-length]

Configuring the Domain Name for the Client

Router(dhcp-config)# domain-name domain

Configuring the IP Domain Name System Servers for the Client

Router(dhcp-config)# dns-server address [address2 ... address8]

Configuring the NetBIOS Windows Internet Naming Service Servers for the Client

Router(dhcp-config)# netbios-name-server address [address2 ... address8]

Configuring the Default Router for the Client

Router(dhcp-config)# default-router address [address2 ... address8]

Configuring the Address Lease Time

Router(dhcp-config)# lease {days [hours][minutes] | infinite}

For more details please check the following link or you can contact me directly

 http://www.cisco.com/en/US/docs/ios/12_2/ip/configuration/guide/1cfdhcp.html#wp1010670

bro i never had work on real router bt whn i used to work n cisco packet tracer i write in config mode          

•   (config)#ip dhcp pool TEST then
• (dhcp-config)#netwirk(id f pool) ip address then subnet mask
• (u can also save ips for future use by giving limits)
• (routerdhcp-config)#exclude-address (like)172.168.10.1-172.168.10.10

in different way we can configure dhcp

First you need to create a DHCP Pool by the "ip dhcp pool" command

Then you enable the DHCP Service by the "service dhcp"

its easy man

for next time you can ask MR.google

to offer range of ips:

Router(config)# ip dhcp excluded-address172.16.1.100172.16.1.103

- to configer auto DHCP :

Router(config)# ip dhcp pool1

Router(dhcp-config)# network172.16.0.0 /16 ---------->16 mean "lenght"

Router(dhcp-config)# dns server172.16.1.103172.16.2.103 -------> DNS configer