Configuring DHCP server on Cisco Routers

DHCP (Dynamic Host Configuration Protocol) is a network protocol that is used to allocate the IP address, Subnet mask, Default Route, and other IP parameters to the client in a network automatically, so that a client does not need anymore memberiakn IP address manually.

Configuring the Router Hostname 

• Router> enable 
• Router # configure terminal 
• Router (config) # hostname R0 

Configuring the IP Address 

• R0 (config) # interface FastEthernet 0/0 
• R0 (config-if) # ip address 192.168.1.250 255.255.255.0 
• R0 (config-if) # no shutdown 
• R0 (config-if) # exit 

Configuring the DHCP Server 

• R0 (config) # ip dhcp pool DHCP_LAN1 
• R0 (dhcp-config) # network 192.168.1.0 255.255.255.0 
• R0 (dhcp-config) # default-route 192.168.1.250 
• R0 (dhcp-config) # dns-server 192.168.1.250R0 
• R0 (dhcp-config) # exit 
• R0 (config) # ip dhcp excluded-address 192.168.1.10 192.168.1.100