hi every one first I should mention taht I am new in centos I have 3 servers one for web server , second : mysql server and the third one is data server . these three servers are connected to each other with a hub . in order to connect to my mysql server I created a local IP 192.168.200.200 in mysql server (the servers main ip is xxx.xxx.xxx.120) and want to connect to this server via local ip address for faster connections but when I ping 192.168.200.200 from web server I did not get any response . ow may I do this ?!