IP Address Configuration 

Take the following steps to configure the IP address of an interface. 

Step 1: Enter privileged EXEC mode: 

               Router>enable password

Step 2: Enter the configure terminal command to enter global configuration

               mode. 

               Router#config terminal

Step 3: Enter the interface type slot/port (for Cisco 7000 series) or interface

               type port (for Cisco 2500 series) to enter the interface configuration mode. 

               Example: 

               Router (config)#interface ethernet 0/1

Step 4: Enter the IP address and subnet mask of the interface using theIP 

              address subnetmask command. 

              Example, 

              Router (config-if)#ip address 192.168.10.1 255.255.255.0

Step 5: Exit the configuration mode by pressing Ctrl-Z 

              Router(config-if)#[Ctrl-Z]

      Wish you can get good knowledge of IP configuration steps from this..