Host File Entry

Host entry needs to be done on Hosts file located in both WFE Server & INDEX Server of Production server.A host name always corresponds to an IP address that is stored in a HOSTS file to identify default gateway.

Steps To Locate Hosts File & Making Host Entry

1. Go to Start
2. Run
3. Type Drivers and Press Enter
               C:\WINDOWS\system32\drivers
4. Open etc Folder >Locate Hosts file and open in Notepad .
     Below screen will appear
5. Add two host entry  : 10.71.17.184 manoj:80
                                     10.71.17.185 manoj:80
6. Save file

Note: Make copy of Hosts file before making changes.

Refer 
http://www.timeatlas.com/term_to_learn/general/taking_control_with_the_hosts_file#.UUF1kp1_42Q
http://www.accs-net.com/hosts/how_to_use_hosts.html
http://en.wikipedia.org/wiki/Hosts_(file)